2019-2023_general.json

[{"answer": "C", "text": " On which HF/MF bands is a General class license holder granted all amateur frequency privileges?", "part": "[97.301(d)]", "number": "G1A01", "answers": ["60 meters, 20 meters, 17 meters, and 12 meters", "160 meters, 80 meters, 40 meters, and 10 meters", "160 meters, 60 meters, 30 meters, 17 meters, 12 meters, and 10 meters", "160 meters, 30 meters, 17 meters, 15 meters, 12 meters, and 10 meters"]}, {"answer": "B", "text": " On which of the following bands is phone operation prohibited?", "part": "[97.305]", "number": "G1A02", "answers": ["160 meters", "30 meters", "17 meters", "12 meters"]}, {"answer": "B", "text": " On which of the following bands is image transmission prohibited?", "part": "[97.305]", "number": "G1A03", "answers": ["160 meters", "30 meters", "20 meters", "12 meters"]}, {"answer": "D", "text": " Which of the following amateur bands is restricted to communication only on specific channels, rather than frequency ranges?", "part": "[97.303(h)]", "number": "G1A04", "answers": ["11 meters", "12 meters", "30 meters", "60 meters"]}, {"answer": "A", "text": " Which of the following frequencies is in the General class portion of the 40-meter band in ITU Region 2?", "part": "[97.301(d)]", "number": "G1A05", "answers": ["7.250 MHz", "7.500 MHz", "40.200 MHz", "40.500 MHz"]}, {"answer": "C", "text": " Which of the following frequencies is within the General class portion of the 75-meter phone band?", "part": "[97.301(d)]", "number": "G1A06", "answers": ["1875 kHz", "3750 kHz", "3900 kHz", "4005 kHz"]}, {"answer": "C", "text": " Which of the following frequencies is within the General class portion of the 20-meter phone band?", "part": "[97.301(d)]", "number": "G1A07", "answers": ["14005 kHz", "14105 kHz", "14305 kHz", "14405 kHz"]}, {"answer": "C", "text": " Which of the following frequencies is within the General class portion of the 80-meter band?", "part": "[97.301(d)]", "number": "G1A08", "answers": ["1855 kHz", "2560 kHz", "3560 kHz", "3650 kHz"]}, {"answer": "C", "text": " Which of the following frequencies is within the General class portion of the 15-meter band?", "part": "[97.301(d)]", "number": "G1A09", "answers": ["14250 kHz", "18155 kHz", "21300 kHz", "24900 kHz"]}, {"answer": "D", "text": " Which of the following frequencies is available to a control operator holding a General class license?", "part": "[97.301(d)]", "number": "G1A10", "answers": ["28.020 MHz", "28.350 MHz", "28.550 MHz", "All these choices are correct"]}, {"answer": "B", "text": " When General class licensees are not permitted to use the entire voice portion of a band, which portion of the voice segment is generally available to them?", "part": "[97.301]", "number": "G1A11", "answers": ["The lower frequency end", "The upper frequency end", "The lower frequency end on frequencies below 7.3 MHz, and the upper end on frequencies above 14.150 MHz", "The upper frequency end on frequencies below 7.3 MHz, and the lower end on frequencies above 14.150 MHz"]}, {"answer": "C", "text": " Which of the following applies when the FCC rules designate the Amateur Service as a secondary user on a band?", "part": "[97.303]", "number": "G1A12", "answers": ["Amateur stations must record the call sign of the primary service station before operating on a frequency assigned to that station", "Amateur stations can use the band only during emergencies", "Amateur stations can use the band only if they do not cause harmful interference to primary users", "Amateur stations may only operate during specific hours of the day, while primary users are permitted 24-hour use of the band"]}, {"answer": "D", "text": " What is the appropriate action if, when operating on either the 30-meter or 60-meter bands, a station in the primary service interferes with your contact?", "part": "[97.303(5)(h)(2)(j)]", "number": "G1A13", "answers": ["Notify the FCCs regional Engineer in Charge of the interference", "Increase your transmitter's power to overcome the interference", "Attempt to contact the station and request that it stop the interference", "Move to a clear frequency or stop transmitting"]}, {"answer": "D", "text": " Which of the following may apply in areas under FCC jurisdiction outside of ITU Region 2?", "part": "[97.301(d)]", "number": "G1A14", "answers": ["Station identification may have to be in a language other than English", "Morse code may not be permitted", "Digital transmission may not be permitted", "Frequency allocations may differ"]}, {"answer": "D", "text": " What portion of the 10-meter band is available for repeater use?", "part": "[97.205(b)]", "number": "G1A15", "answers": ["The entire band", "The portion between 28.1 MHz and 28.2 MHz", "The portion between 28.3 MHz and 28.5 MHz", "The portion above 29.5 MHz"]}, {"answer": "C", "text": " What is the maximum height above ground to which an antenna structure may be erected without requiring notification to the FAA and registration with the FCC, provided it is not at or near a public use airport?", "part": "[97.15(a)]", "number": "G1B01", "answers": ["50 feet", "100 feet", "200 feet", "300 feet"]}, {"answer": "D", "text": " With which of the following conditions must beacon stations comply?", "part": "[97.203(b)]", "number": "G1B02", "answers": ["A beacon station may not use automatic control", "The frequency must be coordinated with the National Beacon Organization", "The frequency must be posted on the internet or published in a national periodical", "There must be no more than one beacon signal transmitting in the same band from the same station location"]}, {"answer": "A", "text": " Which of the following is a purpose of a beacon station as identified in the FCC rules?", "part": "[97.3(a)(9)]", "number": "G1B03", "answers": ["Observation of propagation and reception", "Automatic identification of repeaters", "Transmission of bulletins of general interest to Amateur Radio licensees", "Identifying net frequencies"]}, {"answer": "C", "text": " Which of the following transmissions is permitted?", "part": "[97.113(c)]", "number": "G1B04", "answers": ["Unidentified transmissions for test purposes only", "Retransmission of other amateur station signals by any amateur station", "Occasional retransmission of weather and propagation forecast information from U.S. government stations", "Coded messages of any kind, if not intended to facilitate a criminal act"]}, {"answer": "B", "text": " Which of the following one-way transmissions are permitted?", "part": "[97.111((5)(b)]", "number": "G1B05", "answers": ["Unidentified test transmissions of less than one minute in duration", "Transmissions necessary to assist learning the International Morse code", "Regular transmissions offering equipment for sale, if intended for Amateur Radio use", "All these choices are correct"]}, {"answer": "D", "text": " Under what conditions are state and local governments permitted to regulate Amateur Radio antenna structures?", "part": "[97.15(b),", "number": "G1B06", "answers": ["Under no circumstances, FCC rules take priority", "At any time and to any extent necessary to accomplish a legitimate purpose of the state or local entity, provided that proper filings are made with the FCC", "Only when such structures exceed 50 feet in height and are clearly visible 1000 feet from the structure", "Amateur Service communications must be reasonably accommodated, and regulations must constitute the minimum practical to accommodate a legitimate purpose of the state or local entity"]}, {"answer": "B", "text": " What are the restrictions on the use of abbreviations or procedural signals in the Amateur Service?", "part": "[97.113(a)(4)]", "number": "G1B07", "answers": ["Only \"Q\" signals are permitted", "They may be used if they do not obscure the meaning of a message", "They are not permitted", "Only \"10 codes\" are permitted"]}, {"answer": "D", "text": " When choosing a transmitting frequency, what should you do to comply with good amateur practice?", "part": "[97.101(a)]", "number": "G1B08", "answers": ["Ensure that the frequency and mode selected are within your license class privileges", "Follow generally accepted band plans agreed to by the Amateur Radio community", "Monitor the frequency before transmitting", "All these choices are correct"]}, {"answer": "D", "text": " On what HF frequencies are automatically controlled beacons permitted?", "part": "[97.203(d)]", "number": "G1B09", "answers": ["On any frequency if power is less than 1 watt", "On any frequency if transmissions are in Morse code", "21.08 MHz to 21.09 MHz", "28.20 MHz to 28.30 MHz"]}, {"answer": "C", "text": " What is the power limit for beacon stations?", "part": "[97.203(c)]", "number": "G1B10", "answers": ["10 watts PEP output", "20 watts PEP output", "100 watts PEP output", "200 watts PEP output"]}, {"answer": "A", "text": " Who or what determines \"good engineering and good amateur practice,\" as applied to the operation of an amateur station in all respects not covered by the Part 97 rules?", "part": "[97.101(a)]", "number": "G1B11", "answers": ["The FCC", "The control operator", "The IEEE", "The ITU"]}, {"answer": "B", "text": " When is it permissible to communicate with amateur stations in countries outside the areas administered by the Federal Communications Commission?", "part": "[97.111(a)(1)]", "number": "G1B12", "answers": ["Only when the foreign country has a formal third-party agreement filed with the FCC", "When the contact is with amateurs in any country except those whose administrations have notified the ITU that they object to such communications", "When the contact is with amateurs in any country as long as the communication is conducted in English", "Only when the foreign country is a member of the International Amateur Radio Union"]}, {"answer": "A", "text": " What is the maximum transmitting power an amateur station may use on 10.140 MHz?", "part": "[97.313(c)(1)]", "number": "G1C01", "answers": ["200 watts PEP output", "1000 watts PEP output", "1500 watts PEP output", "2000 watts PEP output"]}, {"answer": "C", "text": " What is the maximum transmitting power an amateur station may use on the 12-meter band?", "part": "[97.313]", "number": "G1C02", "answers": ["50 watts PEP output", "200 watts PEP output", "1500 watts PEP output", "An effective radiated power equivalent to 100 watts from a half-wave dipole"]}, {"answer": "A", "text": " What is the maximum bandwidth permitted by FCC rules for Amateur Radio stations transmitting on USB frequencies in the 60-meter band?", "part": "[97.303(h)(1)]", "number": "G1C03", "answers": ["2.8 kHz", "5.6 kHz", "1.8 kHz", "3 kHz"]}, {"answer": "A", "text": " Which of the following limitations apply to transmitter power on every amateur band?", "part": "[97.313(a)]", "number": "G1C04", "answers": ["Only the minimum power necessary to carry out the desired communications should be used", "Power must be limited to 200 watts when using data transmissions", "Power should be limited as necessary to avoid interference to another radio service on the frequency", "Effective radiated power cannot exceed 1500 watts"]}, {"answer": "C", "text": " What is the limit for transmitter power on the 28 MHz band for a General Class control operator?", "part": "[97.313]", "number": "G1C05", "answers": ["100 watts PEP output", "1000 watts PEP output", "1500 watts PEP output", "2000 watts PEP output"]}, {"answer": "D", "text": " What is the limit for transmitter power on the 1.8 MHz band?", "part": "[97.313]", "number": "G1C06", "answers": ["200 watts PEP output", "1000 watts PEP output", "1200 watts PEP output", "1500 watts PEP output"]}, {"answer": "D", "text": " What is the maximum symbol rate permitted for RTTY or data emission transmission on the 20-meter band?", "part": "[97.305(c),", "number": "G1C07", "answers": ["56 kilobaud", "19.6 kilobaud", "1200 baud", "300 baud"]}, {"answer": "D", "text": " What is the maximum symbol rate permitted for RTTY or data emission transmitted at frequencies below 28 MHz?", "part": "[97.307(f)(3)]", "number": "G1C08", "answers": ["56 kilobaud", "19.6 kilobaud", "1200 baud", "300 baud"]}, {"answer": "A", "text": " What is the maximum symbol rate permitted for RTTY or data emission transmitted on the 1.25-meter and 70-centimeter bands?", "part": "[97.305(c)", "number": "G1C09", "answers": ["56 kilobaud", "19.6 kilobaud", "1200 baud", "300 baud"]}, {"answer": "C", "text": " What is the maximum symbol rate permitted for RTTY or data emission transmissions on the 10-meter band?", "part": "[97.305(c)", "number": "G1C10", "answers": ["56 kilobaud", "19.6 kilobaud", "1200 baud", "300 baud"]}, {"answer": "B", "text": " What is the maximum symbol rate permitted for RTTY or data emission transmissions on the 2-meter band?", "part": "[97.305(c)", "number": "G1C11", "answers": ["56 kilobaud", "19.6 kilobaud", "1200 baud", "300 baud"]}, {"answer": "A", "text": " Which of the following is required by the FCC rules when operating in the 60-meter band?", "part": "[97.303(i)]", "number": "G1C12", "answers": ["If you are using an antenna other than a dipole, you must keep a record of the gain of your antenna", "You must keep a record of the date, time, frequency, power level, and stations worked", "You must keep a record of all third-party traffic", "You must keep a record of the manufacturer of your equipment and the antenna used"]}, {"answer": "C", "text": " What must be done before using a new digital protocol on the air?", "part": "[97.309(a)(4)]", "number": "G1C13", "answers": ["Type-certify equipment to FCC standards", "Obtain an experimental license from the FCC", "Publicly document the technical characteristics of the protocol", "Submit a rule-making proposal to the FCC describing the codes and methods of the technique"]}, {"answer": "C", "text": " What is the maximum power limit on the 60-meter band?", "part": "[97.313(i)]", "number": "G1C14", "answers": ["1500 watts PEP", "10 watts RMS", "ERP of 100 watts PEP with respect to a dipole", "ERP of 100 watts PEP with respect to an isotropic antenna"]}, {"answer": "D", "text": " What measurement is specified by FCC rules that regulate maximum power output?", "part": "[97.313]", "number": "G1C15", "answers": ["RMS", "Average", "Forward", "PEP"]}, {"answer": "A", "text": " Who may receive partial credit for the elements represented by an expired Amateur Radio license?", "part": "[97.501,", "number": "G1D01", "answers": ["Any person who can demonstrate that they once held an FCC-issued General, Advanced, or Amateur Extra class license that was not revoked by the FCC", "Anyone who held an FCC-issued Amateur Radio license that has been expired for not less than 5 years and not more than 15 years", "Any person who previously held an amateur license issued by another country, but only if that country has a current reciprocal licensing agreement with the FCC", "Only persons who once held an FCC issued Novice, Technician, or Technician Plus license"]}, {"answer": "C", "text": " What license examinations may you administer when you are an accredited VE holding a General class operator license?", "part": "[97.509(b)(3)(i)]", "number": "G1D02", "answers": ["General and Technician", "General only", "Technician only", "Amateur Extra, General, and Technician"]}, {"answer": "C", "text": " On which of the following band segments may you operate if you are a Technician class operator and have a Certificate of Successful Completion of Examination (CSCE) for General class privileges?", "part": "[97.9(b)]", "number": "G1D03", "answers": ["Only the Technician band segments until your upgrade is posted in the FCC database", "Only on the Technician band segments until your license arrives in the mail", "On any General or Technician class band segment", "On any General or Technician class band segment except 30 meters and 60 meters"]}, {"answer": "A", "text": " Which of the following is a requirement for administering a Technician class license examination?", "part": "[97.509(3)(i)(c)]", "number": "G1D04", "answers": ["At least three General class or higher VEs must observe the examination", "At least two General class or higher VEs must be present", "At least two General class or higher VEs must be present, but only one need be Amateur Extra class", "At least three VEs of Technician class or higher must observe the examination"]}, {"answer": "D", "text": " Which of the following must a person have before they can be an administering VE for a Technician class license examination?", "part": "[97.509(b)(3)(i)]", "number": "G1D05", "answers": ["Notification to the FCC that you want to give an examination", "Receipt of a Certificate of Successful Completion of Examination (CSCE) for General class", "Possession of a properly obtained telegraphy license", "An FCC General class or higher license and VEC accreditation"]}, {"answer": "A", "text": " When must you add the special identifier \"AG\" after your call sign if you are a Technician class licensee and have a Certificate of Successful Completion of Examination (CSCE) for General class operator privileges, but the FCC has not yet posted your upgrade on its website?", "part": "[97.119(f)(2)]", "number": "G1D06", "answers": ["Whenever you operate using General class frequency privileges", "Whenever you operate on any amateur frequency", "Whenever you operate using Technician frequency privileges", "A special identifier is not required if your General class license application has been filed with the FCC"]}, {"answer": "C", "text": " Volunteer Examiners are accredited by what organization?", "part": "[97.509(b)(1)]", "number": "G1D07", "answers": ["The Federal Communications Commission", "The Universal Licensing System", "A Volunteer Examiner Coordinator", "The Wireless Telecommunications Bureau"]}, {"answer": "B", "text": " Which of the following criteria must be met for a non-U.S. citizen to be an accredited Volunteer Examiner?", "part": "[97.509(b)(3)]", "number": "G1D08", "answers": ["The person must be a resident of the U.S. for a minimum of 5 years", "The person must hold an FCC granted Amateur Radio license of General class or above", "The person's home citizenship must be in ITU region 2", "None of these choices is correct; a non-U.S. citizen cannot be a Volunteer Examiner"]}, {"answer": "C", "text": " How long is a Certificate of Successful Completion of Examination (CSCE) valid for exam element credit?", "part": "[97.9(b)]", "number": "G1D09", "answers": ["30 days", "180 days", "365 days", "For as long as your current license is valid"]}, {"answer": "B", "text": " What is the minimum age that one must be to qualify as an accredited Volunteer Examiner?", "part": "[97.509(b)(2)]", "number": "G1D10", "answers": ["12 years", "18 years", "21 years", "There is no age limit"]}, {"answer": "D", "text": " What is required to obtain a new General Class license after a previously-held license has expired and the two-year grace period has passed?", "part": "[97.505]", "number": "G1D11", "answers": ["They must have a letter from the FCC showing they once held an amateur or commercial license", "There are no requirements other than being able to show a copy of the expired license", "The applicant must be able to produce a copy of a page from a call book published in the U.S. showing his or her name and address", "The applicant must pass the current Element 2 exam"]}, {"answer": "A", "text": " Which of the following would disqualify a third party from participating in stating a message over an amateur station?", "part": "[97.115(b)(2)]", "number": "G1E01", "answers": ["The third party's amateur license has been revoked and not reinstated", "The third party is not a U.S. citizen", "The third party is a licensed amateur", "The third party is speaking in a language other than English"]}, {"answer": "D", "text": " When may a 10-meter repeater retransmit the 2-meter signal from a station that has a Technician class control operator?", "part": "[97.205(b)]", "number": "G1E02", "answers": ["Under no circumstances", "Only if the station on 10-meters is operating under a Special Temporary Authorization allowing such retransmission", "Only during an FCC-declared general state of communications emergency", "Only if the 10-meter repeater control operator holds at least a General class license"]}, {"answer": "A", "text": " What is required to conduct communications with a digital station operating under automatic control outside the automatic control band segments?", "part": "[97.221]", "number": "G1E03", "answers": ["The station initiating the contact must be under local or remote control", "The interrogating transmission must be made by another automatically controlled station", "No third-party traffic may be transmitted", "The control operator of the interrogating station must hold an Amateur Extra Class license"]}, {"answer": "D", "text": " Which of the following conditions require a licensed Amateur Radio operator to take specific steps to avoid harmful interference to other users or facilities?", "part": "[97.13(b),", "number": "G1E04", "answers": ["When operating within one mile of an FCC Monitoring Station", "When using a band where the Amateur Service is secondary", "When a station is transmitting spread spectrum emissions", "All these choices are correct"]}, {"answer": "C", "text": " What types of messages for a third party in another country may be transmitted by an amateur station?", "part": "[97.115(a)(2),", "number": "G1E05", "answers": ["Any message, as long as the amateur operator is not paid", "Only messages for other licensed amateurs", "Only messages relating to Amateur Radio or remarks of a personal character, or messages relating to emergencies or disaster relief", "Any messages, as long as the text of the message is recorded in the station log"]}, {"answer": "C", "text": " The frequency allocations of which ITU region apply to radio amateurs operating in North and South America?", "part": "[97.301,", "number": "G1E06", "answers": ["Region 4", "Region 3", "Region 2", "Region 1"]}, {"answer": "D", "text": " In what part of the 13-centimeter band may an amateur station communicate with non-licensed Wi-Fi stations?", "part": "[97.111]", "number": "G1E07", "answers": ["Anywhere in the band", "Channels 1 through 4", "Channels 42 through 45", "No part"]}, {"answer": "B", "text": " What is the maximum PEP output allowed for spread spectrum transmissions?", "part": "[97.313(j)]", "number": "G1E08", "answers": ["100 milliwatts", "10 watts", "100 watts", "1500 watts"]}, {"answer": "A", "text": " Under what circumstances are messages that are sent via digital modes exempt from Part 97 third-party rules that apply to other modes of communication?", "part": "[97.115]", "number": "G1E09", "answers": ["Under no circumstances", "When messages are encrypted", "When messages are not encrypted", "When under automatic control"]}, {"answer": "A", "text": " Why should an amateur operator normally avoid transmitting on 14.100, 18.110, 21.150, 24. 930 and 28.200 MHz?", "part": "[97.101]", "number": "G1E10", "answers": ["A system of propagation beacon stations operates on those frequencies", "A system of automatic digital stations operates on those frequencies", "These frequencies are set aside for emergency operations", "These frequencies are set aside for bulletins from the FCC"]}, {"answer": "D", "text": " On what bands may automatically controlled stations transmitting RTTY or data emissions communicate with other automatically controlled digital station?", "part": "[97.221,", "number": "G1E11", "answers": ["On any band segment where digital operation is permitted", "Anywhere in the non-phone segments of the 10-meter or shorter wavelength bands", "Only in the non-phone Extra Class segments of the bands", "Anywhere in the 6-meter or shorter wavelength bands, and in limited segments of some of the HF bands"]}, {"answer": "A", "text": " Which sideband is most commonly used for voice communications on frequencies of 14 MHz or higher?", "part": "((NOT SPECIFIED))", "number": "G2A01", "answers": ["Upper sideband", "Lower sideband", "Vestigial sideband", "Double sideband"]}, {"answer": "B", "text": " Which of the following modes is most commonly used for voice communications on the 160-meter, 75-meter, and 40-meter bands?", "part": "((NOT SPECIFIED))", "number": "G2A02", "answers": ["Upper sideband", "Lower sideband", "Vestigial sideband", "Double sideband"]}, {"answer": "A", "text": " Which of the following is most commonly used for SSB voice communications in the VHF and UHF bands?", "part": "((NOT SPECIFIED))", "number": "G2A03", "answers": ["Upper sideband", "Lower sideband", "Vestigial sideband", "Double sideband"]}, {"answer": "A", "text": " Which mode is most commonly used for voice communications on the 17-meter and 12-meter bands?", "part": "((NOT SPECIFIED))", "number": "G2A04", "answers": ["Upper sideband", "Lower sideband", "Vestigial sideband", "Double sideband"]}, {"answer": "C", "text": " Which mode of voice communication is most commonly used on the HF amateur bands?", "part": "((NOT SPECIFIED))", "number": "G2A05", "answers": ["Frequency modulation", "Double sideband", "Single sideband", "Phase modulation"]}, {"answer": "D", "text": " Which of the following is an advantage when using single sideband, as compared to other analog voice modes on the HF amateur bands?", "part": "((NOT SPECIFIED))", "number": "G2A06", "answers": ["Very high fidelity voice modulation", "Less subject to interference from atmospheric static crashes", "Ease of tuning on receive and immunity to impulse noise", "Less bandwidth used and greater power efficiency"]}, {"answer": "B", "text": " Which of the following statements is true of the single sideband voice mode?", "part": "((NOT SPECIFIED))", "number": "G2A07", "answers": ["Only one sideband and the carrier are transmitted; the other sideband is suppressed", "Only one sideband is transmitted; the other sideband and carrier are suppressed", "SSB is the only voice mode that is authorized on the 20-meter, 15-meter, and 10-meter amateur bands", "SSB is the only voice mode that is authorized on the 160-meter, 75-meter, and 40-meter amateur bands"]}, {"answer": "B", "text": " What is the recommended way to break in to a phone contact?", "part": "((NOT SPECIFIED))", "number": "G2A08", "answers": ["Say \"QRZ\" several times, followed by your call sign", "Say your call sign once", "Say \"Breaker Breaker\"", "Say \"CQ\" followed by the call sign of either station"]}, {"answer": "D", "text": " Why do most amateur stations use lower sideband on the 160-meter, 75-meter, and 40-meter bands?", "part": "((NOT SPECIFIED))", "number": "G2A09", "answers": ["Lower sideband is more efficient than upper sideband at these frequencies", "Lower sideband is the only sideband legal on these frequency bands", "Because it is fully compatible with an AM detector", "It is good amateur practice"]}, {"answer": "B", "text": " Which of the following statements is true of voice VOX operation versus PTT operation?", "part": "((NOT SPECIFIED))", "number": "G2A10", "answers": ["The received signal is more natural sounding", "It allows \"hands free\" operation", "It occupies less bandwidth", "It provides more power output"]}, {"answer": "C", "text": " Generally, who should respond to a station in the contiguous 48 states who calls \"CQ DX\"?", "part": "((NOT SPECIFIED))", "number": "G2A11", "answers": ["Any caller is welcome to respond", "Only stations in Germany", "Any stations outside the lower 48 states", "Only contest stations"]}, {"answer": "B", "text": " What control is typically adjusted for proper ALC setting on an amateur single sideband transceiver?", "part": "((NOT SPECIFIED))", "number": "G2A12", "answers": ["The RF clipping level", "Transmit audio or microphone gain", "Antenna inductance or capacitance", "Attenuator level"]}, {"answer": "C", "text": " Which of the following is true concerning access to frequencies?", "part": "[97.101(b),", "number": "G2B01", "answers": ["Nets always have priority", "QSOs in progress always have priority", "Except during emergencies, no amateur station has priority access to any frequency", "Contest operations must always yield to non-contest use of frequencies"]}, {"answer": "B", "text": " What is the first thing you should do if you are communicating with another amateur station and hear a station in distress break in?", "part": "((NOT SPECIFIED))", "number": "G2B02", "answers": ["Continue your communication because you were on the frequency first", "Acknowledge the station in distress and determine what assistance may be needed", "Change to a different frequency", "Immediately cease all transmissions"]}, {"answer": "C", "text": " What is good amateur practice if propagation changes during a contact and you notice interference from other stations on the frequency?", "part": "((NOT SPECIFIED))", "number": "G2B03", "answers": ["Tell the interfering stations to change frequency", "Report the interference to your local Amateur Auxiliary Coordinator", "Attempt to resolve the interference problem with the other stations in a mutually acceptable manner", "Increase power to overcome interference"]}, {"answer": "B", "text": " When selecting a CW transmitting frequency, what minimum separation should be used to minimize interference to stations on adjacent frequencies?", "part": "((NOT SPECIFIED))", "number": "G2B04", "answers": ["5 to 50 Hz", "150 to 500 Hz", "1 to 3 kHz", "3 to 6 kHz"]}, {"answer": "C", "text": " When selecting an SSB transmitting frequency, what minimum separation should be used to minimize interference to stations on adjacent frequencies?", "part": "((NOT SPECIFIED))", "number": "G2B05", "answers": ["5 to 50 Hz", "150 to 500 Hz", "Approximately 3 kHz", "Approximately 6 kHz"]}, {"answer": "A", "text": " What is a practical way to avoid harmful interference on an apparently clear frequency before calling CQ on CW or phone?", "part": "((NOT SPECIFIED))", "number": "G2B06", "answers": ["Send \"QRL?\" on CW, followed by your call sign; or, if using phone, ask if the frequency is in use, followed by your call sign", "Listen for 2 minutes before calling CQ", "Send the letter \"V\" in Morse code several times and listen for a response, or say \"test\" several times and listen for a response", "Send \"QSY\" on CW or if using phone, announce \"the frequency is in use,\" then give your call sign and listen for a response"]}, {"answer": "C", "text": " Which of the following complies with good amateur practice when choosing a frequency on which to initiate a call?", "part": "((NOT SPECIFIED))", "number": "G2B07", "answers": ["Check to see if the channel is assigned to another station", "Identify your station by transmitting your call sign at least 3 times", "Follow the voluntary band plan for the operating mode you intend to use", "All these choices are correct"]}, {"answer": "A", "text": " What is the voluntary band plan restriction for U.S. stations transmitting within the 48 contiguous states in the 50.1 to 50.125 MHz band segment?", "part": "((NOT SPECIFIED))", "number": "G2B08", "answers": ["Only contacts with stations not within the 48 contiguous states", "Only contacts with other stations within the 48 contiguous states", "Only digital contacts", "Only SSTV contacts"]}, {"answer": "A", "text": " Who may be the control operator of an amateur station transmitting in RACES to assist relief operations during a disaster?", "part": "[97.407(a)]", "number": "G2B09", "answers": ["Only a person holding an FCC-issued amateur operator license", "Only a RACES net control operator", "A person holding an FCC-issued amateur operator license or an appropriate government official", "Any control operator when normal communication systems are operational"]}, {"answer": "C", "text": " When is an amateur station allowed to use any means at its disposal to assist another station in distress?", "part": "[97.405(b)]", "number": "G2B10", "answers": ["Only when transmitting in RACES", "At any time when transmitting in an organized net", "At any time during an actual emergency", "Only on authorized HF frequencies"]}, {"answer": "A", "text": " What frequency should be used to send a distress call?", "part": "[97.405]", "number": "G2B11", "answers": ["Whichever frequency has the best chance of communicating the distress message", "Only frequencies authorized for RACES or ARES stations", "Only frequencies that are within your operating privileges", "Only frequencies used by police, fire, or emergency medical services"]}, {"answer": "D", "text": " Which of the following describes full break-in telegraphy (QSK)?", "part": "((NOT SPECIFIED))", "number": "G2C01", "answers": ["Breaking stations send the Morse code prosign \"BK\"", "Automatic keyers, instead of hand keys, are used to send Morse code", "An operator must activate a manual send/receive switch before and after every transmission", "Transmitting stations can receive between code characters and elements"]}, {"answer": "A", "text": " What should you do if a CW station sends \"QRS?\"", "part": "((NOT SPECIFIED))", "number": "G2C02", "answers": ["Send slower", "Change frequency", "Increase your power", "Repeat everything twice"]}, {"answer": "C", "text": " What does it mean when a CW operator sends \"KN\" at the end of a transmission?", "part": "((NOT SPECIFIED))", "number": "G2C03", "answers": ["Listening for novice stations", "Operating full break-in", "Listening only for a specific station or stations", "Closing station now"]}, {"answer": "D", "text": " What does the Q signal \"QRL?\" mean?", "part": "((NOT SPECIFIED))", "number": "G2C04", "answers": ["\"Will you keep the frequency clear?\"", "\"Are you operating full break-in?\" or \"Can you operate full break-in?\"", "\"Are you listening only for a specific station?\"", "\"Are you busy?\" or \"Is this frequency in use?\""]}, {"answer": "B", "text": " What is the best speed to use when answering a CQ in Morse code?", "part": "((NOT SPECIFIED))", "number": "G2C05", "answers": ["The fastest speed at which you are comfortable copying, but no slower than the CQ", "The fastest speed at which you are comfortable copying, but no faster than the CQ", "At the standard calling speed of 10 wpm", "At the standard calling speed of 5 wpm"]}, {"answer": "D", "text": " What does the term \"zero beat\" mean in CW operation?", "part": "((NOT SPECIFIED))", "number": "G2C06", "answers": ["Matching the speed of the transmitting station", "Operating split to avoid interference on frequency", "Sending without error", "Matching the transmit frequency to the frequency of a received signal"]}, {"answer": "A", "text": " When sending CW, what does a \"C\" mean when added to the RST report?", "part": "((NOT SPECIFIED))", "number": "G2C07", "answers": ["Chirpy or unstable signal", "Report was read from an S meter rather than estimated", "100 percent copy", "Key clicks"]}, {"answer": "C", "text": " What prosign is sent to indicate the end of a formal message when using CW?", "part": "((NOT SPECIFIED))", "number": "G2C08", "answers": ["SK", "BK", "AR", "KN"]}, {"answer": "C", "text": " What does the Q signal \"QSL\" mean?", "part": "((NOT SPECIFIED))", "number": "G2C09", "answers": ["Send slower", "We have already confirmed by card", "I acknowledge receipt", "We have worked before"]}, {"answer": "D", "text": " What does the Q signal \"QRN\" mean?", "part": "((NOT SPECIFIED))", "number": "G2C10", "answers": ["Send more slowly", "Stop sending", "Zero beat my signal", "I am troubled by static"]}, {"answer": "D", "text": " What does the Q signal \"QRV\" mean?", "part": "((NOT SPECIFIED))", "number": "G2C11", "answers": ["You are sending too fast", "There is interference on the frequency", "I am quitting for the day", "I am ready to receive messages"]}, {"answer": "A", "text": " What is the Volunteer Monitoring Program?", "part": "((NOT SPECIFIED))", "number": "G2D01", "answers": ["Amateur volunteers who are formally enlisted to monitor the airwaves for rules violations", "Amateur volunteers who conduct amateur licensing examinations", "Amateur volunteers who conduct frequency coordination for amateur VHF repeaters", "Amateur volunteers who use their station equipment to help civil defense organizations in times of emergency"]}, {"answer": "B", "text": " Which of the following are objectives of the Volunteer Monitoring Program?", "part": "((NOT SPECIFIED))", "number": "G2D02", "answers": ["To conduct efficient and orderly amateur licensing examinations", "To encourage amateur radio operators to self-regulate and comply with the rules", "To coordinate repeaters for efficient and orderly spectrum usage", "To provide emergency and public safety communications"]}, {"answer": "B", "text": " What skills learned during hidden transmitter hunts are of help to the Volunteer Monitoring Program?", "part": "((NOT SPECIFIED))", "number": "G2D03", "answers": ["Identification of out-of-band operation", "Direction finding used to locate stations violating FCC rules", "Identification of different call signs", "Hunters have an opportunity to transmit on non-amateur frequencies"]}, {"answer": "B", "text": " Which of the following describes an azimuthal projection map?", "part": "((NOT SPECIFIED))", "number": "G2D04", "answers": ["A map that shows accurate land masses", "A map that shows true bearings and distances from a particular location", "A map that shows the angle at which an amateur satellite crosses the equator", "A map that shows the number of degrees longitude that an amateur satellite appears to move westward at the equator with each orbit"]}, {"answer": "C", "text": " Which of the following is a good way to indicate on a clear frequency in the HF phone bands that you are looking for a contact with any station?", "part": "((NOT SPECIFIED))", "number": "G2D05", "answers": ["Sign your call sign once, followed by the words \"listening for a call\" -- if no answer, change frequency and repeat", "Say \"QTC\" followed by \"this is\" and your call sign -- if no answer, change frequency and repeat", "Repeat \"CQ\" a few times, followed by \"this is,\" then your call sign a few times, then pause to listen, repeat as necessary", "Transmit an unmodulated carried for approximately 10 seconds, followed by \"this is\" and your call sign, and pause to listen -- repeat as necessary"]}, {"answer": "C", "text": " How is a directional antenna pointed when making a \"long-path\" contact with another station?", "part": "((NOT SPECIFIED))", "number": "G2D06", "answers": ["Toward the rising sun", "Along the grayline", "180 degrees from the station's short-path heading", "Toward the north"]}, {"answer": "D", "text": " Which of the following are examples of the NATO Phonetic Alphabet?", "part": "((NOT SPECIFIED))", "number": "G2D07", "answers": ["Able, Baker, Charlie, Dog", "Adam, Boy, Charles, David", "America, Boston, Canada, Denmark", "Alpha, Bravo, Charlie, Delta"]}, {"answer": "D", "text": " What is a reason why many amateurs keep a station log?", "part": "((NOT SPECIFIED))", "number": "G2D08", "answers": ["The ITU requires a log of all international contacts", "The ITU requires a log of all international third-party traffic", "The log provides evidence of operation needed to renew a license without retest", "To help with a reply if the FCC requests information"]}, {"answer": "C", "text": " Which of the following is required when participating in a contest on HF frequencies?", "part": "((NOT SPECIFIED))", "number": "G2D09", "answers": ["Submit a log to the contest sponsor", "Send a QSL card to the stations worked, or QSL via Logbook of The World", "Identify your station per normal FCC regulations", "All these choices are correct"]}, {"answer": "B", "text": " What is QRP operation?", "part": "((NOT SPECIFIED))", "number": "G2D10", "answers": ["Remote piloted model control", "Low-power transmit operation", "Transmission using Quick Response Protocol", "Traffic relay procedure net operation"]}, {"answer": "D", "text": " Which of the following is typical of the lower HF frequencies during the summer?", "part": "((NOT SPECIFIED))", "number": "G2D11", "answers": ["Poor propagation at any time of day", "World-wide propagation during the daylight hours", "Heavy distortion on signals due to photon absorption", "High levels of atmospheric noise or \"static\""]}, {"answer": "D", "text": " Which mode is normally used when sending RTTY signals via AFSK with an SSB transmitter?", "part": "((NOT SPECIFIED))", "number": "G2E01", "answers": ["USB", "DSB", "CW", "LSB"]}, {"answer": "B", "text": " How can a PACTOR modem or controller be used to determine if the channel is in use by other PACTOR stations?", "part": "((NOT SPECIFIED))", "number": "G2E02", "answers": ["Unplug the data connector temporarily and see if the channel-busy indication is turned off", "Put the modem or controller in a mode which allows monitoring communications without a connection", "Transmit UI packets several times and wait to see if there is a response from another PACTOR station", "Send the message, \"Is this frequency in use?\""]}, {"answer": "D", "text": " What symptoms may result from other signals interfering with a PACTOR or WINMOR transmission?", "part": "((NOT SPECIFIED))", "number": "G2E03", "answers": ["Frequent retries or timeouts", "Long pauses in message transmission", "Failure to establish a connection between stations", "All these choices are correct"]}, {"answer": "B", "text": " What segment of the 20-meter band is most often used for digital transmissions (avoiding the DX propagation beacons)?", "part": "((NOT SPECIFIED))", "number": "G2E04", "answers": ["14.000 - 14.050 MHz", "14.070 - 14.112 MHz", "14.150 - 14.225 MHz", "14.275 - 14.350 MHz"]}, {"answer": "B", "text": " What is the standard sideband used to generate a JT65, JT9, or FT8 digital signal when using AFSK in any amateur band?", "part": "((NOT SPECIFIED))", "number": "G2E05", "answers": ["LSB", "USB", "DSB", "SSB"]}, {"answer": "B", "text": " What is the most common frequency shift for RTTY emissions in the amateur HF bands?", "part": "((NOT SPECIFIED))", "number": "G2E06", "answers": ["85 Hz", "170 Hz", "425 Hz", "850 Hz"]}, {"answer": "A", "text": " What segment of the 80-meter band is most commonly used for digital transmissions?", "part": "((NOT SPECIFIED))", "number": "G2E07", "answers": ["3570  -  3600 kHz", "3500  -  3525 kHz", "3700  -  3750 kHz", "3775  -  3825 kHz"]}, {"answer": "D", "text": " In what segment of the 20-meter band are most PSK31 operations commonly found?", "part": "((NOT SPECIFIED))", "number": "G2E08", "answers": ["At the bottom of the slow-scan TV segment, near 14.230 MHz", "At the top of the SSB phone segment, near 14.325 MHz", "In the middle of the CW segment, near 14.100 MHz", "Below the RTTY segment, near 14.070 MHz"]}, {"answer": "C", "text": " How do you join a contact between two stations using the PACTOR protocol?", "part": "((NOT SPECIFIED))", "number": "G2E09", "answers": ["Send broadcast packets containing your call sign while in MONITOR mode", "Transmit a steady carrier until the PACTOR protocol times out and disconnects", "Joining an existing contact is not possible, PACTOR connections are limited to two stations", "Send a NAK response continuously so that the sending station must stand by"]}, {"answer": "D", "text": " Which of the following is a way to establish contact with a digital messaging system gateway station?", "part": "((NOT SPECIFIED))", "number": "G2E10", "answers": ["Send an email to the system control operator", "Send QRL in Morse code", "Respond when the station broadcasts its SSID", "Transmit a connect message on the station's published frequency"]}, {"answer": "D", "text": " Which of the following is characteristic of the FT8 mode of the WSJT-X family?", "part": "((NOT SPECIFIED))", "number": "G2E11", "answers": ["It is a keyboard-to-keyboard chat mode", "Each transmission takes exactly 60 seconds", "It is limited to use on VHF", "Typical exchanges are limited to call signs, grid locators, and signal reports"]}, {"answer": "D", "text": " Which of the following connectors would be a good choice for a serial data port?", "part": "((NOT SPECIFIED))", "number": "G2E12", "answers": ["PL-259", "Type N", "Type SMA", "DE-9"]}, {"answer": "A", "text": " Which communication system sometimes uses the internet to transfer messages?", "part": "((NOT SPECIFIED))", "number": "G2E13", "answers": ["Winlink", "RTTY", "ARES", "SKYWARN"]}, {"answer": "D", "text": " What could be wrong if you cannot decode an RTTY or other FSK signal even though it is apparently tuned in properly?", "part": "((NOT SPECIFIED))", "number": "G2E14", "answers": ["The mark and space frequencies may be reversed", "You may have selected the wrong baud rate", "You may be listening on the wrong sideband", "All these choices are correct"]}, {"answer": "B", "text": " Which of the following is a requirement when using the FT8 digital mode?", "part": "((NOT SPECIFIED))", "number": "G2E15", "answers": ["A special hardware modem", "Computer time accurate within approximately 1 second", "Receiver attenuator set to -12 dB", "A vertically polarized antenna"]}, {"answer": "A", "text": " What is the significance of the sunspot number with regard to HF propagation?", "part": "((NOT SPECIFIED))", "number": "G3A01", "answers": ["Higher sunspot numbers generally indicate a greater probability of good propagation at higher frequencies", "Lower sunspot numbers generally indicate greater probability of sporadic E propagation", "A zero sunspot number indicates that radio propagation is not possible on any band", "A zero sunspot number indicates undisturbed conditions"]}, {"answer": "B", "text": " What effect does a Sudden Ionospheric Disturbance have on the daytime ionospheric propagation of HF radio waves?", "part": "((NOT SPECIFIED))", "number": "G3A02", "answers": ["It enhances propagation on all HF frequencies", "It disrupts signals on lower frequencies more than those on higher frequencies", "It disrupts communications via satellite more than direct communications", "None, because only areas on the night side of the Earth are affected"]}, {"answer": "C", "text": " Approximately how long does it take the increased ultraviolet and X-ray radiation from solar flares to affect radio propagation on Earth?", "part": "((NOT SPECIFIED))", "number": "G3A03", "answers": ["28 days", "1 to 2 hours", "8 minutes", "20 to 40 hours"]}, {"answer": "D", "text": " Which of the following are least reliable for long-distance communications during periods of low solar activity?", "part": "((NOT SPECIFIED))", "number": "G3A04", "answers": ["80 meters and 160 meters", "60 meters and 40 meters", "30 meters and 20 meters", "15 meters, 12 meters, and 10 meters"]}, {"answer": "D", "text": " What is the solar flux index?", "part": "((NOT SPECIFIED))", "number": "G3A05", "answers": ["A measure of the highest frequency that is useful for ionospheric propagation between two points on Earth", "A count of sunspots that is adjusted for solar emissions", "Another name for the American sunspot number", "A measure of solar radiation at 10.7 centimeters wavelength"]}, {"answer": "D", "text": " What is a geomagnetic storm?", "part": "((NOT SPECIFIED))", "number": "G3A06", "answers": ["A sudden drop in the solar flux index", "A thunderstorm that affects radio propagation", "Ripples in the ionosphere", "A temporary disturbance in Earth's magnetosphere"]}, {"answer": "D", "text": " At what point in the solar cycle does the 20-meter band usually support worldwide propagation during daylight hours?", "part": "((NOT SPECIFIED))", "number": "G3A07", "answers": ["At the summer solstice", "Only at the maximum point of the solar cycle", "Only at the minimum point of the solar cycle", "At any point in the solar cycle"]}, {"answer": "B", "text": " Which of the following effects can a geomagnetic storm have on radio propagation?", "part": "((NOT SPECIFIED))", "number": "G3A08", "answers": ["Improved high-latitude HF propagation", "Degraded high-latitude HF propagation", "Improved ground wave propagation", "Degraded ground wave propagation"]}, {"answer": "A", "text": " What benefit can high geomagnetic activity have on radio communications?", "part": "((NOT SPECIFIED))", "number": "G3A09", "answers": ["Auroras that can reflect VHF signals", "Higher signal strength for HF signals passing through the polar regions", "Improved HF long path propagation", "Reduced long delayed echoes"]}, {"answer": "C", "text": " What causes HF propagation conditions to vary periodically in a roughly 28-day cycle?", "part": "((NOT SPECIFIED))", "number": "G3A10", "answers": ["Long term oscillations in the upper atmosphere", "Cyclic variation in Earth's radiation belts", "The sun's rotation on its axis", "The position of the moon in its orbit"]}, {"answer": "D", "text": " How long does it take charged particles from coronal mass ejections to affect radio propagation on Earth?", "part": "((NOT SPECIFIED))", "number": "G3A11", "answers": ["28 days", "14 days", "4 to 8 minutes", "20 to 40 hours"]}, {"answer": "B", "text": " What does the K-index indicate?", "part": "((NOT SPECIFIED))", "number": "G3A12", "answers": ["The relative position of sunspots on the surface of the sun", "The short-term stability of Earth's magnetic field", "The stability of the sun's magnetic field", "The solar radio flux at Boulder, Colorado"]}, {"answer": "C", "text": " What does the A-index indicate?", "part": "((NOT SPECIFIED))", "number": "G3A13", "answers": ["The relative position of sunspots on the surface of the sun", "The amount of polarization of the sun's electric field", "The long-term stability of Earth's geomagnetic field", "The solar radio flux at Boulder, Colorado"]}, {"answer": "B", "text": " How are radio communications usually affected by the charged particles that reach Earth from solar coronal holes?", "part": "((NOT SPECIFIED))", "number": "G3A14", "answers": ["HF communications are improved", "HF communications are disturbed", "VHF/UHF ducting is improved", "VHF/UHF ducting is disturbed"]}, {"answer": "D", "text": " What is a characteristic of skywave signals arriving at your location by both short-path and long-path propagation?", "part": "((NOT SPECIFIED))", "number": "G3B01", "answers": ["Periodic fading approximately every 10 seconds", "Signal strength increased by 3 dB", "The signal might be cancelled causing severe attenuation", "A slightly delayed echo might be heard"]}, {"answer": "D", "text": " What factors affect the MUF?", "part": "((NOT SPECIFIED))", "number": "G3B02", "answers": ["Path distance and location", "Time of day and season", "Solar radiation and ionospheric disturbances", "All these choices are correct"]}, {"answer": "A", "text": " Which of the following applies when selecting a frequency for lowest attenuation when transmitting on HF?", "part": "((NOT SPECIFIED))", "number": "G3B03", "answers": ["Select a frequency just below the MUF", "Select a frequency just above the LUF", "Select a frequency just below the critical frequency", "Select a frequency just above the critical frequency"]}, {"answer": "A", "text": " What is a reliable way to determine if the MUF is high enough to support skip propagation between your station and a distant location on frequencies between 14 and 30 MHz?", "part": "((NOT SPECIFIED))", "number": "G3B04", "answers": ["Listen for signals from an international beacon in the frequency range you plan to use", "Send a series of dots on the band and listen for echoes from your signal", "Check the strength of TV signals from western Europe", "Check the strength of signals in the MF AM broadcast band"]}, {"answer": "A", "text": " What usually happens to radio waves with frequencies below the MUF and above the LUF when they are sent into the ionosphere?", "part": "((NOT SPECIFIED))", "number": "G3B05", "answers": ["They are bent back to Earth", "They pass through the ionosphere", "They are amplified by interaction with the ionosphere", "They are bent and trapped in the ionosphere to circle Earth"]}, {"answer": "C", "text": " What usually happens to radio waves with frequencies below the LUF?", "part": "((NOT SPECIFIED))", "number": "G3B06", "answers": ["They are bent back to Earth", "They pass through the ionosphere", "They are completely absorbed by the ionosphere", "They are bent and trapped in the ionosphere to circle Earth"]}, {"answer": "A", "text": " What does LUF stand for?", "part": "((NOT SPECIFIED))", "number": "G3B07", "answers": ["The Lowest Usable Frequency for communications between two points", "The Longest Universal Function for communications between two points", "The Lowest Usable Frequency during a 24-hour period", "The Longest Universal Function during a 24-hour period"]}, {"answer": "B", "text": " What does MUF stand for?", "part": "((NOT SPECIFIED))", "number": "G3B08", "answers": ["The Minimum Usable Frequency for communications between two points", "The Maximum Usable Frequency for communications between two points", "The Minimum Usable Frequency during a 24-hour period", "The Maximum Usable Frequency during a 24-hour period"]}, {"answer": "C", "text": " What is the approximate maximum distance along the Earth's surface that is normally covered in one hop using the F2 region?", "part": "((NOT SPECIFIED))", "number": "G3B09", "answers": ["180 miles", "1,200 miles", "2,500 miles", "12,000 miles"]}, {"answer": "B", "text": " What is the approximate maximum distance along the Earth's surface that is normally covered in one hop using the E region?", "part": "((NOT SPECIFIED))", "number": "G3B10", "answers": ["180 miles", "1,200 miles", "2,500 miles", "12,000 miles"]}, {"answer": "A", "text": " What happens to HF propagation when the LUF exceeds the MUF?", "part": "((NOT SPECIFIED))", "number": "G3B11", "answers": ["No HF radio frequency will support ordinary skywave communications over the path", "HF communications over the path are enhanced", "Double hop propagation along the path is more common", "Propagation over the path on all HF frequencies is enhanced"]}, {"answer": "A", "text": " Which ionospheric layer is closest to the surface of Earth?", "part": "((NOT SPECIFIED))", "number": "G3C01", "answers": ["The D layer", "The E layer", "The F1 layer", "The F2 layer"]}, {"answer": "A", "text": " Where on Earth do ionospheric layers reach their maximum height?", "part": "((NOT SPECIFIED))", "number": "G3C02", "answers": ["Where the sun is overhead", "Where the sun is on the opposite side of Earth", "Where the sun is rising", "Where the sun has just set"]}, {"answer": "C", "text": " Why is the F2 region mainly responsible for the longest distance radio wave propagation?", "part": "((NOT SPECIFIED))", "number": "G3C03", "answers": ["Because it is the densest ionospheric layer", "Because of the Doppler effect", "Because it is the highest ionospheric region", "Because of meteor trails at that level"]}, {"answer": "D", "text": " What does the term \"critical angle\" mean, as used in radio wave propagation?", "part": "((NOT SPECIFIED))", "number": "G3C04", "answers": ["The long path azimuth of a distant station", "The short path azimuth of a distant station", "The lowest takeoff angle that will return a radio wave to Earth under specific ionospheric conditions", "The highest takeoff angle that will return a radio wave to Earth under specific ionospheric conditions"]}, {"answer": "C", "text": " Why is long-distance communication on the 40-meter, 60-meter, 80-meter, and 160-meter bands more difficult during the day?", "part": "((NOT SPECIFIED))", "number": "G3C05", "answers": ["The F layer absorbs signals at these frequencies during daylight hours", "The F layer is unstable during daylight hours", "The D layer absorbs signals at these frequencies during daylight hours", "The E layer is unstable during daylight hours"]}, {"answer": "B", "text": " What is a characteristic of HF scatter?", "part": "((NOT SPECIFIED))", "number": "G3C06", "answers": ["Phone signals have high intelligibility", "Signals have a fluttering sound", "There are very large, sudden swings in signal strength", "Scatter propagation occurs only at night"]}, {"answer": "D", "text": " What makes HF scatter signals often sound distorted?", "part": "((NOT SPECIFIED))", "number": "G3C07", "answers": ["The ionospheric layer involved is unstable", "Ground waves are absorbing much of the signal", "The E-region is not present", "Energy is scattered into the skip zone through several different radio wave paths"]}, {"answer": "A", "text": " Why are HF scatter signals in the skip zone usually weak?", "part": "((NOT SPECIFIED))", "number": "G3C08", "answers": ["Only a small part of the signal energy is scattered into the skip zone", "Signals are scattered from the magnetosphere, which is not a good reflector", "Propagation is through ground waves, which absorb most of the signal energy", "Propagation is through ducts in the F region, which absorb most of the energy"]}, {"answer": "B", "text": " What type of propagation allows signals to be heard in the transmitting station's skip zone?", "part": "((NOT SPECIFIED))", "number": "G3C09", "answers": ["Faraday rotation", "Scatter", "Chordal hop", "Short-path"]}, {"answer": "B", "text": " What is Near Vertical Incidence Skywave (NVIS) propagation?", "part": "((NOT SPECIFIED))", "number": "G3C10", "answers": ["Propagation near the MUF", "Short distance MF or HF propagation using high elevation angles", "Long path HF propagation at sunrise and sunset", "Double hop propagation near the LUF"]}, {"answer": "D", "text": " Which ionospheric layer is the most absorbent of long skip signals during daylight hours on frequencies below 10 MHz?", "part": "((NOT SPECIFIED))", "number": "G3C11", "answers": ["The F2 layer", "The F1 layer", "The E layer", "The D layer"]}, {"answer": "B", "text": " What is the purpose of the \"notch filter\" found on many HF transceivers?", "part": "((NOT SPECIFIED))", "number": "G4A01", "answers": ["To restrict the transmitter voice bandwidth", "To reduce interference from carriers in the receiver passband", "To eliminate receiver interference from impulse noise sources", "To enhance the reception of a specific frequency on a crowded band"]}, {"answer": "C", "text": " What is one advantage of selecting the opposite, or \"reverse,\" sideband when receiving CW signals on a typical HF transceiver?", "part": "((NOT SPECIFIED))", "number": "G4A02", "answers": ["Interference from impulse noise will be eliminated", "More stations can be accommodated within a given signal passband", "It may be possible to reduce or eliminate interference from other signals", "Accidental out-of-band operation can be prevented"]}, {"answer": "C", "text": " What is normally meant by operating a transceiver in \"split\" mode?", "part": "((NOT SPECIFIED))", "number": "G4A03", "answers": ["The radio is operating at half power", "The transceiver is operating from an external power source", "The transceiver is set to different transmit and receive frequencies", "The transmitter is emitting an SSB signal, as opposed to DSB operation"]}, {"answer": "B", "text": " What reading on the plate current meter of a vacuum tube RF power amplifier indicates correct adjustment of the plate tuning control?", "part": "((NOT SPECIFIED))", "number": "G4A04", "answers": ["A pronounced peak", "A pronounced dip", "No change will be observed", "A slow, rhythmic oscillation"]}, {"answer": "C", "text": " What is a reason to use Automatic Level Control (ALC) with an RF power amplifier?", "part": "((NOT SPECIFIED))", "number": "G4A05", "answers": ["To balance the transmitter audio frequency response", "To reduce harmonic radiation", "To reduce distortion due to excessive drive", "To increase overall efficiency"]}, {"answer": "C", "text": " What type of device is often used to match transmitter output impedance to an impedance not equal to 50 ohms?", "part": "((NOT SPECIFIED))", "number": "G4A06", "answers": ["Balanced modulator", "SWR bridge", "Antenna coupler or antenna tuner", "Q multiplier"]}, {"answer": "D", "text": " What condition can lead to permanent damage to a solid-state RF power amplifier?", "part": "((NOT SPECIFIED))", "number": "G4A07", "answers": ["Insufficient drive power", "Low input SWR", "Shorting the input signal to ground", "Excessive drive power"]}, {"answer": "D", "text": " What is the correct adjustment for the load or coupling control of a vacuum tube RF power amplifier?", "part": "((NOT SPECIFIED))", "number": "G4A08", "answers": ["Minimum SWR on the antenna", "Minimum plate current without exceeding maximum allowable grid current", "Highest plate voltage while minimizing grid current", "Maximum power output without exceeding maximum allowable plate current"]}, {"answer": "C", "text": " Why is a time delay sometimes included in a transmitter keying circuit?", "part": "((NOT SPECIFIED))", "number": "G4A09", "answers": ["To prevent stations from interfering with one another", "To allow the transmitter power regulators to charge properly", "To allow time for transmit-receive changeover operations to complete properly before RF output is allowed", "To allow time for a warning signal to be sent to other stations"]}, {"answer": "B", "text": " What is the purpose of an electronic keyer?", "part": "((NOT SPECIFIED))", "number": "G4A10", "answers": ["Automatic transmit/receive switching", "Automatic generation of strings of dots and dashes for CW operation", "VOX operation", "Computer interface for PSK and RTTY operation"]}, {"answer": "A", "text": " Which of the following is a use for the IF shift control on a receiver?", "part": "((NOT SPECIFIED))", "number": "G4A11", "answers": ["To avoid interference from stations very close to the receive frequency", "To change frequency rapidly", "To permit listening on a different frequency from that on which you are transmitting", "To tune in stations that are slightly off frequency without changing your transmit frequency"]}, {"answer": "C", "text": " Which of the following is a common use for the dual-VFO feature on a transceiver?", "part": "((NOT SPECIFIED))", "number": "G4A12", "answers": ["To allow transmitting on two frequencies at once", "To permit full duplex operation  --  that is, transmitting and receiving at the same time", "To permit monitoring of two different frequencies", "To facilitate computer interface"]}, {"answer": "A", "text": " What is one reason to use the attenuator function that is present on many HF transceivers?", "part": "((NOT SPECIFIED))", "number": "G4A13", "answers": ["To reduce signal overload due to strong incoming signals", "To reduce the transmitter power when driving a linear amplifier", "To reduce power consumption when operating from batteries", "To slow down received CW signals for better copy"]}, {"answer": "B", "text": " What is likely to happen if a transceiver's ALC system is not set properly when transmitting AFSK signals with the radio using single sideband mode?", "part": "((NOT SPECIFIED))", "number": "G4A14", "answers": ["ALC will invert the modulation of the AFSK mode", "Improper action of ALC distorts the signal and can cause spurious emissions", "When using digital modes, too much ALC activity can cause the transmitter to overheat", "All these choices are correct"]}, {"answer": "D", "text": " Which of the following can be a symptom of transmitted RF being picked up by an audio cable carrying AFSK data signals between a computer and a transceiver?", "part": "((NOT SPECIFIED))", "number": "G4A15", "answers": ["The VOX circuit does not un-key the transmitter", "The transmitter signal is distorted", "Frequent connection timeouts", "All these choices are correct"]}, {"answer": "C", "text": " How does a noise blanker work?", "part": "((NOT SPECIFIED))", "number": "G4A16", "answers": ["By temporarily increasing received bandwidth", "By redirecting noise pulses into a filter capacitor", "By reducing receiver gain during a noise pulse", "By clipping noise peaks"]}, {"answer": "A", "text": " What happens as the noise reduction control level in a receiver is increased?", "part": "((NOT SPECIFIED))", "number": "G4A17", "answers": ["Received signals may become distorted", "Received frequency may become unstable", "CW signals may become severely attenuated", "Received frequency may shift several kHz"]}, {"answer": "D", "text": " What item of test equipment contains horizontal and vertical channel amplifiers?", "part": "((NOT SPECIFIED))", "number": "G4B01", "answers": ["An ohmmeter", "A signal generator", "An ammeter", "An oscilloscope"]}, {"answer": "D", "text": " Which of the following is an advantage of an oscilloscope versus a digital voltmeter?", "part": "((NOT SPECIFIED))", "number": "G4B02", "answers": ["An oscilloscope uses less power", "Complex impedances can be easily measured", "Input impedance is much lower", "Complex waveforms can be measured"]}, {"answer": "A", "text": " Which of the following is the best instrument to use when checking the keying waveform of a CW transmitter?", "part": "((NOT SPECIFIED))", "number": "G4B03", "answers": ["An oscilloscope", "A field strength meter", "A sidetone monitor", "A wavemeter"]}, {"answer": "D", "text": " What signal source is connected to the vertical input of an oscilloscope when checking the RF envelope pattern of a transmitted signal?", "part": "((NOT SPECIFIED))", "number": "G4B04", "answers": ["The local oscillator of the transmitter", "An external RF oscillator", "The transmitter balanced mixer output", "The attenuated RF output of the transmitter"]}, {"answer": "D", "text": " Why is high input impedance desirable for a voltmeter?", "part": "((NOT SPECIFIED))", "number": "G4B05", "answers": ["It improves the frequency response", "It decreases battery consumption in the meter", "It improves the resolution of the readings", "It decreases the loading on circuits being measured"]}, {"answer": "C", "text": " What is an advantage of a digital voltmeter as compared to an analog voltmeter?", "part": "((NOT SPECIFIED))", "number": "G4B06", "answers": ["Better for measuring computer circuits", "Better for RF measurements", "Better precision for most uses", "Faster response"]}, {"answer": "B", "text": " What signals are used to conduct a two-tone test?", "part": "((NOT SPECIFIED))", "number": "G4B07", "answers": ["Two audio signals of the same frequency shifted 90 degrees", "Two non-harmonically related audio signals", "Two swept frequency tones", "Two audio frequency range square wave signals of equal amplitude"]}, {"answer": "A", "text": " Which of the following instruments may be used to monitor relative RF output when making antenna and transmitter adjustments?", "part": "((NOT SPECIFIED))", "number": "G4B08", "answers": ["A field strength meter", "An antenna noise bridge", "A multimeter", "A Q meter"]}, {"answer": "B", "text": " Which of the following can be determined with a field strength meter?", "part": "((NOT SPECIFIED))", "number": "G4B09", "answers": ["The radiation resistance of an antenna", "The radiation pattern of an antenna", "The presence and amount of phase distortion of a transmitter", "The presence and amount of amplitude distortion of a transmitter"]}, {"answer": "A", "text": " Which of the following can be determined with a directional wattmeter?", "part": "((NOT SPECIFIED))", "number": "G4B10", "answers": ["Standing wave ratio", "Antenna front-to-back ratio", "RF interference", "Radio wave propagation"]}, {"answer": "C", "text": " Which of the following must be connected to an antenna analyzer when it is being used for SWR measurements?", "part": "((NOT SPECIFIED))", "number": "G4B11", "answers": ["Receiver", "Transmitter", "Antenna and feed line", "All these choices are correct"]}, {"answer": "B", "text": " What problem can occur when making measurements on an antenna system with an antenna analyzer?", "part": "((NOT SPECIFIED))", "number": "G4B12", "answers": ["Permanent damage to the analyzer may occur if it is operated into a high SWR", "Strong signals from nearby transmitters can affect the accuracy of measurements", "The analyzer can be damaged if measurements outside the ham bands are attempted", "Connecting the analyzer to an antenna can cause it to absorb harmonics"]}, {"answer": "C", "text": " What is a use for an antenna analyzer other than measuring the SWR of an antenna system?", "part": "((NOT SPECIFIED))", "number": "G4B13", "answers": ["Measuring the front-to-back ratio of an antenna", "Measuring the turns ratio of a power transformer", "Determining the impedance of coaxial cable", "Determining the gain of a directional antenna"]}, {"answer": "D", "text": " What is an instance in which the use of an instrument with analog readout may be preferred over an instrument with digital readout?", "part": "((NOT SPECIFIED))", "number": "G4B14", "answers": ["When testing logic circuits", "When high precision is desired", "When measuring the frequency of an oscillator", "When adjusting tuned circuits"]}, {"answer": "A", "text": " What type of transmitter performance does a two-tone test analyze?", "part": "((NOT SPECIFIED))", "number": "G4B15", "answers": ["Linearity", "Percentage of suppression of carrier and undesired sideband for SSB", "Percentage of frequency modulation", "Percentage of carrier phase shift"]}, {"answer": "B", "text": " Which of the following might be useful in reducing RF interference to audio frequency devices?", "part": "((NOT SPECIFIED))", "number": "G4C01", "answers": ["Bypass inductor", "Bypass capacitor", "Forward-biased diode", "Reverse-biased diode"]}, {"answer": "C", "text": " Which of the following could be a cause of interference covering a wide range of frequencies?", "part": "((NOT SPECIFIED))", "number": "G4C02", "answers": ["Not using a balun or line isolator to feed balanced antennas", "Lack of rectification of the transmitter's signal in power conductors", "Arcing at a poor electrical connection", "Using a balun to feed an unbalanced antenna"]}, {"answer": "C", "text": " What sound is heard from an audio device or telephone if there is interference from a nearby single sideband phone transmitter?", "part": "((NOT SPECIFIED))", "number": "G4C03", "answers": ["A steady hum whenever the transmitter is on the air", "On-and-off humming or clicking", "Distorted speech", "Clearly audible speech"]}, {"answer": "A", "text": " What is the effect on an audio device when there is interference from a nearby CW transmitter?", "part": "((NOT SPECIFIED))", "number": "G4C04", "answers": ["On-and-off humming or clicking", "A CW signal at a nearly pure audio frequency", "A chirpy CW signal", "Severely distorted audio"]}, {"answer": "D", "text": " What might be the problem if you receive an RF burn when touching your equipment while transmitting on an HF band, assuming the equipment is connected to a ground rod?", "part": "((NOT SPECIFIED))", "number": "G4C05", "answers": ["Flat braid rather than round wire has been used for the ground wire", "Insulated wire has been used for the ground wire", "The ground rod is resonant", "The ground wire has high impedance on that frequency"]}, {"answer": "C", "text": " What effect can be caused by a resonant ground connection?", "part": "((NOT SPECIFIED))", "number": "G4C06", "answers": ["Overheating of ground straps", "Corrosion of the ground rod", "High RF voltages on the enclosures of station equipment", "A ground loop"]}, {"answer": "D", "text": " Why should soldered joints not be used with the wires that connect the base of a tower to a system of ground rods?", "part": "((NOT SPECIFIED))", "number": "G4C07", "answers": ["The resistance of solder is too high", "Solder flux will prevent a low conductivity connection", "Solder has too high a dielectric constant to provide adequate lightning protection", "A soldered joint will likely be destroyed by the heat of a lightning strike"]}, {"answer": "A", "text": " Which of the following would reduce RF interference caused by common-mode current on an audio cable?", "part": "((NOT SPECIFIED))", "number": "G4C08", "answers": ["Placing a ferrite choke around the cable", "Adding series capacitors to the conductors", "Adding shunt inductors to the conductors", "Adding an additional insulating jacket to the cable"]}, {"answer": "D", "text": " How can a ground loop be avoided?", "part": "((NOT SPECIFIED))", "number": "G4C09", "answers": ["Connect all ground conductors in series", "Connect the AC neutral conductor to the ground wire", "Avoid using lock washers and star washers when making ground connections", "Connect all ground conductors to a single point"]}, {"answer": "A", "text": " What could be a symptom of a ground loop somewhere in your station?", "part": "((NOT SPECIFIED))", "number": "G4C10", "answers": ["You receive reports of \"hum\" on your station's transmitted signal", "The SWR reading for one or more antennas is suddenly very high", "An item of station equipment starts to draw excessive amounts of current", "You receive reports of harmonic interference from your station"]}, {"answer": "C", "text": " What technique helps to minimize RF \"hot spots\" in an amateur station?", "part": "((NOT SPECIFIED))", "number": "G4C11", "answers": ["Building all equipment in a metal enclosure", "Using surge suppressor power outlets", "Bonding all equipment enclosures together", "Low-pass filters on all feed lines"]}, {"answer": "A", "text": " Which of the following is an advantage of a receiver DSP IF filter as compared to an analog filter?", "part": "((NOT SPECIFIED))", "number": "G4C12", "answers": ["A wide range of filter bandwidths and shapes can be created", "Fewer digital components are required", "Mixing products are greatly reduced", "The DSP filter is much more effective at VHF frequencies"]}, {"answer": "D", "text": " Why must the metal enclosure of every item of station equipment be grounded?", "part": "((NOT SPECIFIED))", "number": "G4C13", "answers": ["It prevents a blown fuse in the event of an internal short circuit", "It prevents signal overload", "It ensures that the neutral wire is grounded", "It ensures that hazardous voltages cannot appear on the chassis"]}, {"answer": "A", "text": " What is the purpose of a speech processor as used in a modern transceiver?", "part": "((NOT SPECIFIED))", "number": "G4D01", "answers": ["Increase the intelligibility of transmitted phone signals during poor conditions", "Increase transmitter bass response for more natural-sounding SSB signals", "Prevent distortion of voice signals", "Decrease high-frequency voice output to prevent out-of-band operation"]}, {"answer": "B", "text": " Which of the following describes how a speech processor affects a transmitted single sideband phone signal?", "part": "((NOT SPECIFIED))", "number": "G4D02", "answers": ["It increases peak power", "It increases average power", "It reduces harmonic distortion", "It reduces intermodulation distortion"]}, {"answer": "D", "text": " Which of the following can be the result of an incorrectly adjusted speech processor?", "part": "((NOT SPECIFIED))", "number": "G4D03", "answers": ["Distorted speech", "Splatter", "Excessive background pickup", "All these choices are correct"]}, {"answer": "C", "text": " What does an S meter measure?", "part": "((NOT SPECIFIED))", "number": "G4D04", "answers": ["Conductance", "Impedance", "Received signal strength", "Transmitter power output"]}, {"answer": "D", "text": " How does a signal that reads 20 dB over S9 compare to one that reads S9 on a receiver, assuming a properly calibrated S meter?", "part": "((NOT SPECIFIED))", "number": "G4D05", "answers": ["It is 10 times less powerful", "It is 20 times less powerful", "It is 20 times more powerful", "It is 100 times more powerful"]}, {"answer": "A", "text": " Where is an S meter found?", "part": "((NOT SPECIFIED))", "number": "G4D06", "answers": ["In a receiver", "In an SWR bridge", "In a transmitter", "In a conductance bridge"]}, {"answer": "C", "text": " How much must the power output of a transmitter be raised to change the S meter reading on a distant receiver from S8 to S9?", "part": "((NOT SPECIFIED))", "number": "G4D07", "answers": ["Approximately 1.5 times", "Approximately 2 times", "Approximately 4 times", "Approximately 8 times"]}, {"answer": "C", "text": " What frequency range is occupied by a 3 kHz LSB signal when the displayed carrier frequency is set to 7.178 MHz?", "part": "((NOT SPECIFIED))", "number": "G4D08", "answers": ["7.178 to 7.181 MHz", "7.178 to 7.184 MHz", "7.175 to 7.178 MHz", "7.1765 to 7.1795 MHz"]}, {"answer": "B", "text": " What frequency range is occupied by a 3 kHz USB signal with the displayed carrier frequency set to 14.347 MHz?", "part": "((NOT SPECIFIED))", "number": "G4D09", "answers": ["14.347 to 14.647 MHz", "14.347 to 14.350 MHz", "14.344 to 14.347 MHz", "14.3455 to 14.3485 MHz"]}, {"answer": "A", "text": " How close to the lower edge of the phone segment should your displayed carrier frequency be when using 3 kHz wide LSB?", "part": "((NOT SPECIFIED))", "number": "G4D10", "answers": ["At least 3 kHz above the edge of the segment", "At least 3 kHz below the edge of the segment", "At least 1 kHz below the edge of the segment", "At least 1 kHz above the edge of the segment"]}, {"answer": "B", "text": " How close to the upper edge of the phone segment should your displayed carrier frequency be when using 3 kHz wide USB?", "part": "((NOT SPECIFIED))", "number": "G4D11", "answers": ["At least 3 kHz above the edge of the band", "At least 3 kHz below the edge of the band", "At least 1 kHz above the edge of the segment", "At least 1 kHz below the edge of the segment"]}, {"answer": "C", "text": " What is the purpose of a capacitance hat on a mobile antenna?", "part": "((NOT SPECIFIED))", "number": "G4E01", "answers": ["To increase the power handling capacity of a whip antenna", "To allow automatic band changing", "To electrically lengthen a physically short antenna", "To allow remote tuning"]}, {"answer": "D", "text": " What is the purpose of a corona ball on an HF mobile antenna?", "part": "((NOT SPECIFIED))", "number": "G4E02", "answers": ["To narrow the operating bandwidth of the antenna", "To increase the \"Q\" of the antenna", "To reduce the chance of damage if the antenna should strike an object", "To reduce RF voltage discharge from the tip of the antenna while transmitting"]}, {"answer": "A", "text": " Which of the following direct, fused power connections would be the best for a 100 watt HF mobile installation?", "part": "((NOT SPECIFIED))", "number": "G4E03", "answers": ["To the battery using heavy-gauge wire", "To the alternator or generator using heavy-gauge wire", "To the battery using resistor wire", "To the alternator or generator using resistor wire"]}, {"answer": "B", "text": " Why is it best NOT to draw the DC power for a 100 watt HF transceiver from a vehicle's auxiliary power socket?", "part": "((NOT SPECIFIED))", "number": "G4E04", "answers": ["The socket is not wired with an RF-shielded power cable", "The socket's wiring may be inadequate for the current drawn by the transceiver", "The DC polarity of the socket is reversed from the polarity of modern HF transceivers", "Drawing more than 50 watts from this socket could cause the engine to overheat"]}, {"answer": "C", "text": " Which of the following most limits an HF mobile installation?", "part": "((NOT SPECIFIED))", "number": "G4E05", "answers": ["\"Picket fencing\"", "The wire gauge of the DC power line to the transceiver", "Efficiency of the electrically short antenna", "FCC rules limiting mobile output power on the 75-meter band"]}, {"answer": "C", "text": " What is one disadvantage of using a shortened mobile antenna as opposed to a full-size antenna?", "part": "((NOT SPECIFIED))", "number": "G4E06", "answers": ["Short antennas are more likely to cause distortion of transmitted signals", "Short antennas can only receive circularly polarized signals", "Operating bandwidth may be very limited", "Harmonic radiation may increase"]}, {"answer": "D", "text": " Which of the following may cause receive interference in a radio installed in a vehicle?", "part": "((NOT SPECIFIED))", "number": "G4E07", "answers": ["The battery charging system", "The fuel delivery system", "The vehicle control computer", "All these choices are correct"]}, {"answer": "A", "text": " What is the name of the process by which sunlight is changed directly into electricity?", "part": "((NOT SPECIFIED))", "number": "G4E08", "answers": ["Photovoltaic conversion", "Photon emission", "Photosynthesis", "Photon decomposition"]}, {"answer": "B", "text": " What is the approximate open-circuit voltage from a fully illuminated silicon photovoltaic cell?", "part": "((NOT SPECIFIED))", "number": "G4E09", "answers": ["0.02 VDC", "0.5 VDC", "0.2 VDC", "1.38 VDC"]}, {"answer": "B", "text": " What is the reason that a series diode is connected between a solar panel and a storage battery that is being charged by the panel?", "part": "((NOT SPECIFIED))", "number": "G4E10", "answers": ["The diode serves to regulate the charging voltage to prevent overcharge", "The diode prevents self-discharge of the battery through the panel during times of low or no illumination", "The diode limits the current flowing from the panel to a safe value", "The diode greatly increases the efficiency during times of high illumination"]}, {"answer": "C", "text": " Which of the following is a disadvantage of using wind as the primary source of power for an emergency station?", "part": "((NOT SPECIFIED))", "number": "G4E11", "answers": ["The conversion efficiency from mechanical energy to electrical energy is less than 2 percent", "The voltage and current ratings of such systems are not compatible with amateur equipment", "A large energy storage system is needed to supply power when the wind is not blowing", "All these choices are correct"]}, {"answer": "C", "text": " What is impedance?", "part": "((NOT SPECIFIED))", "number": "G5A01", "answers": ["The electric charge stored by a capacitor", "The inverse of resistance", "The opposition to the flow of current in an AC circuit", "The force of repulsion between two similar electric fields"]}, {"answer": "B", "text": " What is reactance?", "part": "((NOT SPECIFIED))", "number": "G5A02", "answers": ["Opposition to the flow of direct current caused by resistance", "Opposition to the flow of alternating current caused by capacitance or inductance", "A property of ideal resistors in AC circuits", "A large spark produced at switch contacts when an inductor is de-energized"]}, {"answer": "D", "text": " Which of the following causes opposition to the flow of alternating current in an inductor?", "part": "((NOT SPECIFIED))", "number": "G5A03", "answers": ["Conductance", "Reluctance", "Admittance", "Reactance"]}, {"answer": "C", "text": " Which of the following causes opposition to the flow of alternating current in a capacitor?", "part": "((NOT SPECIFIED))", "number": "G5A04", "answers": ["Conductance", "Reluctance", "Reactance", "Admittance"]}, {"answer": "D", "text": " How does an inductor react to AC?", "part": "((NOT SPECIFIED))", "number": "G5A05", "answers": ["As the frequency of the applied AC increases, the reactance decreases", "As the amplitude of the applied AC increases, the reactance increases", "As the amplitude of the applied AC increases, the reactance decreases", "As the frequency of the applied AC increases, the reactance increases"]}, {"answer": "A", "text": " How does a capacitor react to AC?", "part": "((NOT SPECIFIED))", "number": "G5A06", "answers": ["As the frequency of the applied AC increases, the reactance decreases", "As the frequency of the applied AC increases, the reactance increases", "As the amplitude of the applied AC increases, the reactance increases", "As the amplitude of the applied AC increases, the reactance decreases"]}, {"answer": "D", "text": " What happens when the impedance of an electrical load is equal to the output impedance of a power source, assuming both impedances are resistive?", "part": "((NOT SPECIFIED))", "number": "G5A07", "answers": ["The source delivers minimum power to the load", "The electrical load is shorted", "No current can flow through the circuit", "The source can deliver maximum power to the load"]}, {"answer": "B", "text": " What is one reason to use an impedance matching transformer?", "part": "((NOT SPECIFIED))", "number": "G5A08", "answers": ["To minimize transmitter power output", "To maximize the transfer of power", "To reduce power supply ripple", "To minimize radiation resistance"]}, {"answer": "B", "text": " What unit is used to measure reactance?", "part": "((NOT SPECIFIED))", "number": "G5A09", "answers": ["Farad", "Ohm", "Ampere", "Siemens"]}, {"answer": "D", "text": " Which of the following devices can be used for impedance matching at radio frequencies?", "part": "((NOT SPECIFIED))", "number": "G5A10", "answers": ["A transformer", "A Pi-network", "A length of transmission line", "All these choices are correct"]}, {"answer": "A", "text": " Which of the following describes one method of impedance matching between two AC circuits?", "part": "((NOT SPECIFIED))", "number": "G5A11", "answers": ["Insert an LC network between the two circuits", "Reduce the power output of the first circuit", "Increase the power output of the first circuit", "Insert a circulator between the two circuits"]}, {"answer": "B", "text": " What dB change represents a factor of two increase or decrease in power?", "part": "((NOT SPECIFIED))", "number": "G5B01", "answers": ["Approximately 2 dB", "Approximately 3 dB", "Approximately 6 dB", "Approximately 12 dB"]}, {"answer": "C", "text": " How does the total current relate to the individual currents in each branch of a purely resistive parallel circuit?", "part": "((NOT SPECIFIED))", "number": "G5B02", "answers": ["It equals the average of each branch current", "It decreases as more parallel branches are added to the circuit", "It equals the sum of the currents through each branch", "It is the sum of the reciprocal of each individual voltage drop"]}, {"answer": "B", "text": " How many watts of electrical power are used if 400 VDC is supplied to an 800 ohm load?", "part": "((NOT SPECIFIED))", "number": "G5B03", "answers": ["0.5 watts", "200 watts", "400 watts", "3200 watts"]}, {"answer": "A", "text": " How many watts of electrical power are used by a 12 VDC light bulb that draws 0.2 amperes?", "part": "((NOT SPECIFIED))", "number": "G5B04", "answers": ["2.4 watts", "24 watts", "6 watts", "60 watts"]}, {"answer": "A", "text": " How many watts are dissipated when a current of 7.0 milliamperes flows through a 1250 ohm resistance?", "part": "((NOT SPECIFIED))", "number": "G5B05", "answers": ["Approximately 61 milliwatts", "Approximately 61 watts", "Approximately 11 milliwatts", "Approximately 11 watts"]}, {"answer": "B", "text": " What is the output PEP from a transmitter if an oscilloscope measures 200 volts peak-to-peak across a 50 ohm dummy load connected to the transmitter output?", "part": "((NOT SPECIFIED))", "number": "G5B06", "answers": ["1.4 watts", "100 watts", "353.5 watts", "400 watts"]}, {"answer": "C", "text": " What value of an AC signal produces the same power dissipation in a resistor as a DC voltage of the same value?", "part": "((NOT SPECIFIED))", "number": "G5B07", "answers": ["The peak-to-peak value", "The peak value", "The RMS value", "The reciprocal of the RMS value"]}, {"answer": "D", "text": " What is the peak-to-peak voltage of a sine wave with an RMS voltage of 120.0 volts?", "part": "((NOT SPECIFIED))", "number": "G5B08", "answers": ["84.8 volts", "169.7 volts", "240.0 volts", "339.4 volts"]}, {"answer": "B", "text": " What is the RMS voltage of a sine wave with a value of 17 volts peak?", "part": "((NOT SPECIFIED))", "number": "G5B09", "answers": ["8.5 volts", "12 volts", "24 volts", "34 volts"]}, {"answer": "C", "text": " What percentage of power loss would result from a transmission line loss of 1 dB?", "part": "((NOT SPECIFIED))", "number": "G5B10", "answers": ["10.9 percent", "12.2 percent", "20.6 percent", "25.9 percent"]}, {"answer": "B", "text": " What is the ratio of peak envelope power to average power for an unmodulated carrier?", "part": "((NOT SPECIFIED))", "number": "G5B11", "answers": ["0.707", "1.00", "1.414", "2.00"]}, {"answer": "B", "text": " What would be the RMS voltage across a 50 ohm dummy load dissipating 1200 watts?", "part": "((NOT SPECIFIED))", "number": "G5B12", "answers": ["173 volts", "245 volts", "346 volts", "692 volts"]}, {"answer": "B", "text": " What is the output PEP of an unmodulated carrier if an average reading wattmeter connected to the transmitter output indicates 1060 watts?", "part": "((NOT SPECIFIED))", "number": "G5B13", "answers": ["530 watts", "1060 watts", "1500 watts", "2120 watts"]}, {"answer": "B", "text": " What is the output PEP from a transmitter if an oscilloscope measures 500 volts peak-to-peak across a 50 ohm resistive load connected to the transmitter output?", "part": "((NOT SPECIFIED))", "number": "G5B14", "answers": ["8.75 watts", "625 watts", "2500 watts", "5000 watts"]}, {"answer": "C", "text": " What causes a voltage to appear across the secondary winding of a transformer when an AC voltage source is connected across its primary winding?", "part": "((NOT SPECIFIED))", "number": "G5C01", "answers": ["Capacitive coupling", "Displacement current coupling", "Mutual inductance", "Mutual capacitance"]}, {"answer": "A", "text": " What happens if a signal is applied to the secondary winding of a 4:1 voltage step-down transformer instead of the primary winding?", "part": "((NOT SPECIFIED))", "number": "G5C02", "answers": ["The output voltage is multiplied by 4", "The output voltage is divided by 4", "Additional resistance must be added in series with the primary to prevent overload", "Additional resistance must be added in parallel with the secondary to prevent overload"]}, {"answer": "B", "text": " Which of the following components increases the total resistance of a resistor?", "part": "((NOT SPECIFIED))", "number": "G5C03", "answers": ["A parallel resistor", "A series resistor", "A series capacitor", "A parallel capacitor"]}, {"answer": "C", "text": " What is the total resistance of three 100 ohm resistors in parallel?", "part": "((NOT SPECIFIED))", "number": "G5C04", "answers": ["0.30 ohms", "0.33 ohms", "33.3 ohms", "300 ohms"]}, {"answer": "C", "text": " If three equal value resistors in series produce 450 ohms, what is the value of each resistor?", "part": "((NOT SPECIFIED))", "number": "G5C05", "answers": ["1500 ohms", "90 ohms", "150 ohms", "175 ohms"]}, {"answer": "C", "text": " What is the RMS voltage across a 500-turn secondary winding in a transformer if the 2250-turn primary is connected to 120 VAC?", "part": "((NOT SPECIFIED))", "number": "G5C06", "answers": ["2370 volts", "540 volts", "26.7 volts", "5.9 volts"]}, {"answer": "A", "text": " What is the turns ratio of a transformer used to match an audio amplifier having 600 ohm output impedance to a speaker having 4 ohm impedance?", "part": "((NOT SPECIFIED))", "number": "G5C07", "answers": ["12.2 to 1", "24.4 to 1", "150 to 1", "300 to 1"]}, {"answer": "D", "text": " What is the equivalent capacitance of two 5.0 nanofarad capacitors and one 750 picofarad capacitor connected in parallel?", "part": "((NOT SPECIFIED))", "number": "G5C08", "answers": ["576.9 nanofarads", "1733 picofarads", "3583 picofarads", "10.750 nanofarads"]}, {"answer": "C", "text": " What is the capacitance of three 100 microfarad capacitors connected in series?", "part": "((NOT SPECIFIED))", "number": "G5C09", "answers": ["0.30 microfarads", "0.33 microfarads", "33.3 microfarads", "300 microfarads"]}, {"answer": "C", "text": " What is the inductance of three 10 millihenry inductors connected in parallel?", "part": "((NOT SPECIFIED))", "number": "G5C10", "answers": ["0.30 henries", "3.3 henries", "3.3 millihenries", "30 millihenries"]}, {"answer": "C", "text": " What is the inductance of a 20 millihenry inductor connected in series with a 50 millihenry inductor?", "part": "((NOT SPECIFIED))", "number": "G5C11", "answers": ["0.07 millihenries", "14.3 millihenries", "70 millihenries", "1000 millihenries"]}, {"answer": "B", "text": " What is the capacitance of a 20 microfarad capacitor connected in series with a 50 microfarad capacitor?", "part": "((NOT SPECIFIED))", "number": "G5C12", "answers": ["0.07 microfarads", "14.3 microfarads", "70 microfarads", "1000 microfarads"]}, {"answer": "C", "text": " Which of the following components should be added to a capacitor to increase the capacitance?", "part": "((NOT SPECIFIED))", "number": "G5C13", "answers": ["An inductor in series", "A resistor in series", "A capacitor in parallel", "A capacitor in series"]}, {"answer": "D", "text": " Which of the following components should be added to an inductor to increase the inductance?", "part": "((NOT SPECIFIED))", "number": "G5C14", "answers": ["A capacitor in series", "A resistor in parallel", "An inductor in parallel", "An inductor in series"]}, {"answer": "A", "text": " What is the total resistance of a 10 ohm, a 20 ohm, and a 50 ohm resistor connected in parallel?", "part": "((NOT SPECIFIED))", "number": "G5C15", "answers": ["5.9 ohms", "0.17 ohms", "10000 ohms", "80 ohms"]}, {"answer": "B", "text": " Why is the conductor of the primary winding of many voltage step-up transformers larger in diameter than the conductor of the secondary winding?", "part": "((NOT SPECIFIED))", "number": "G5C16", "answers": ["To improve the coupling between the primary and secondary", "To accommodate the higher current of the primary", "To prevent parasitic oscillations due to resistive losses in the primary", "To ensure that the volume of the primary winding is equal to the volume of the secondary winding"]}, {"answer": "C", "text": " What is the value in nanofarads (nF) of a 22,000 picofarad (pF) capacitor?", "part": "((NOT SPECIFIED))", "number": "G5C17", "answers": ["0.22", "2.2", "22", "220"]}, {"answer": "D", "text": " What is the value in microfarads of a 4700 nanofarad (nF) capacitor?", "part": "((NOT SPECIFIED))", "number": "G5C18", "answers": ["47", "0.47", "47,000", "4.7"]}, {"answer": "C", "text": " What is the minimum allowable discharge voltage for maximum life of a standard 12 volt lead-acid battery?", "part": "((NOT SPECIFIED))", "number": "G6A01", "answers": ["6 volts", "8.5 volts", "10.5 volts", "12 volts"]}, {"answer": "B", "text": " What is an advantage of the low internal resistance of nickel-cadmium batteries?", "part": "((NOT SPECIFIED))", "number": "G6A02", "answers": ["Long life", "High discharge current", "High voltage", "Rapid recharge"]}, {"answer": "B", "text": " What is the approximate junction threshold voltage of a germanium diode?", "part": "((NOT SPECIFIED))", "number": "G6A03", "answers": ["0.1 volt", "0.3 volts", "0.7 volts", "1.0 volts"]}, {"answer": "C", "text": " Which of the following is an advantage of an electrolytic capacitor?", "part": "((NOT SPECIFIED))", "number": "G6A04", "answers": ["Tight tolerance", "Much less leakage than any other type", "High capacitance for a given volume", "Inexpensive RF capacitor"]}, {"answer": "C", "text": " What is the approximate junction threshold voltage of a conventional silicon diode?", "part": "((NOT SPECIFIED))", "number": "G6A05", "answers": ["0.1 volt", "0.3 volts", "0.7 volts", "1.0 volts"]}, {"answer": "B", "text": " Which of the following is a reason not to use wire-wound resistors in an RF circuit?", "part": "((NOT SPECIFIED))", "number": "G6A06", "answers": ["The resistor's tolerance value would not be adequate for such a circuit", "The resistor's inductance could make circuit performance unpredictable", "The resistor could overheat", "The resistor's internal capacitance would detune the circuit"]}, {"answer": "A", "text": " What are the stable operating points for a bipolar transistor used as a switch in a logic circuit?", "part": "((NOT SPECIFIED))", "number": "G6A07", "answers": ["Its saturation and cutoff regions", "Its active region (between the cutoff and saturation regions)", "Its peak and valley current points", "Its enhancement and depletion modes"]}, {"answer": "D", "text": " What is an advantage of using a ferrite core toroidal inductor?", "part": "((NOT SPECIFIED))", "number": "G6A08", "answers": ["Large values of inductance may be obtained", "The magnetic properties of the core may be optimized for a specific range of frequencies", "Most of the magnetic field is contained in the core", "All these choices are correct"]}, {"answer": "B", "text": " Which of the following describes the construction of a MOSFET?", "part": "((NOT SPECIFIED))", "number": "G6A09", "answers": ["The gate is formed by a back-biased junction", "The gate is separated from the channel with a thin insulating layer", "The source is separated from the drain by a thin insulating layer", "The source is formed by depositing metal on silicon"]}, {"answer": "A", "text": " Which element of a triode vacuum tube is used to regulate the flow of electrons between cathode and plate?", "part": "((NOT SPECIFIED))", "number": "G6A10", "answers": ["Control grid", "Heater", "Screen grid", "Trigger electrode"]}, {"answer": "C", "text": " What happens when an inductor is operated above its self-resonant frequency?", "part": "((NOT SPECIFIED))", "number": "G6A11", "answers": ["Its reactance increases", "Harmonics are generated", "It becomes capacitive", "Catastrophic failure is likely"]}, {"answer": "A", "text": " What is the primary purpose of a screen grid in a vacuum tube?", "part": "((NOT SPECIFIED))", "number": "G6A12", "answers": ["To reduce grid-to-plate capacitance", "To increase efficiency", "To increase the control grid resistance", "To decrease plate resistance"]}, {"answer": "D", "text": " Why is the polarity of applied voltages important for polarized capacitors?", "part": "((NOT SPECIFIED))", "number": "G6A13", "answers": ["Incorrect polarity can cause the capacitor to short-circuit", "Reverse voltages can destroy the dielectric layer of an electrolytic capacitor", "The capacitor could overheat and explode", "All these choices are correct"]}, {"answer": "D", "text": " Which of the following is an advantage of ceramic capacitors as compared to other types of capacitors?", "part": "((NOT SPECIFIED))", "number": "G6A14", "answers": ["Tight tolerance", "High stability", "High capacitance for given volume", "Comparatively low cost"]}, {"answer": "C", "text": " What determines the performance of a ferrite core at different frequencies?", "part": "((NOT SPECIFIED))", "number": "G6B01", "answers": ["Its conductivity", "Its thickness", "The composition, or \"mix,\" of materials used", "The ratio of outer diameter to inner diameter"]}, {"answer": "B", "text": " What is meant by the term MMIC?", "part": "((NOT SPECIFIED))", "number": "G6B02", "answers": ["Multi-Megabyte Integrated Circuit", "Monolithic Microwave Integrated Circuit", "Military Manufactured Integrated Circuit", "Mode Modulated Integrated Circuit"]}, {"answer": "A", "text": " Which of the following is an advantage of CMOS integrated circuits compared to TTL integrated circuits?", "part": "((NOT SPECIFIED))", "number": "G6B03", "answers": ["Low power consumption", "High power handling capability", "Better suited for RF amplification", "Better suited for power supply regulation"]}, {"answer": "B", "text": " What is meant by the term ROM?", "part": "((NOT SPECIFIED))", "number": "G6B04", "answers": ["Resistor Operated Memory", "Read Only Memory", "Random Operational Memory", "Resistant to Overload Memory"]}, {"answer": "C", "text": " What is meant when memory is characterized as non-volatile?", "part": "((NOT SPECIFIED))", "number": "G6B05", "answers": ["It is resistant to radiation damage", "It is resistant to high temperatures", "The stored information is maintained even if power is removed", "The stored information cannot be changed once written"]}, {"answer": "D", "text": " What kind of device is an integrated circuit operational amplifier?", "part": "((NOT SPECIFIED))", "number": "G6B06", "answers": ["Digital", "MMIC", "Programmable Logic", "Analog"]}, {"answer": "A", "text": " Which of the following describes a type N connector?", "part": "((NOT SPECIFIED))", "number": "G6B07", "answers": ["A moisture-resistant RF connector useful to 10 GHz", "A small bayonet connector used for data circuits", "A threaded connector used for hydraulic systems", "An audio connector used in surround-sound installations"]}, {"answer": "D", "text": " How is an LED biased when emitting light?", "part": "((NOT SPECIFIED))", "number": "G6B08", "answers": ["Beyond cutoff", "At the Zener voltage", "Reverse biased", "Forward biased"]}, {"answer": "A", "text": " Which of the following is a characteristic of a liquid crystal display?", "part": "((NOT SPECIFIED))", "number": "G6B09", "answers": ["It utilizes ambient or back lighting", "It offers a wide dynamic range", "It consumes relatively high power", "It has relatively short lifetime"]}, {"answer": "A", "text": " How does a ferrite bead or core reduce common-mode RF current on the shield of a coaxial cable?", "part": "((NOT SPECIFIED))", "number": "G6B10", "answers": ["By creating an impedance in the current's path", "It converts common-mode current to differential mode", "By creating an out-of-phase current to cancel the common-mode current", "Ferrites expel magnetic fields"]}, {"answer": "B", "text": " What is a type SMA connector?", "part": "((NOT SPECIFIED))", "number": "G6B11", "answers": ["A large bayonet connector usable at power levels more than 1 KW", "A small threaded connector suitable for signals up to several GHz", "A connector designed for serial multiple access signals", "A type of push-on connector intended for high-voltage applications"]}, {"answer": "C", "text": " Which of these connector types is commonly used for audio signals in Amateur Radio stations?", "part": "((NOT SPECIFIED))", "number": "G6B12", "answers": ["PL-259", "BNC", "RCA Phono", "Type N"]}, {"answer": "C", "text": " Which of these connector types is commonly used for RF connections at frequencies up to 150 MHz?", "part": "((NOT SPECIFIED))", "number": "G6B13", "answers": ["Octal", "RJ-11", "PL-259", "DB-25"]}, {"answer": "B", "text": " What useful feature does a power supply bleeder resistor provide?", "part": "((NOT SPECIFIED))", "number": "G7A01", "answers": ["It acts as a fuse for excess voltage", "It ensures that the filter capacitors are discharged when power is removed", "It removes shock hazards from the induction coils", "It eliminates ground loop current"]}, {"answer": "D", "text": " Which of the following components are used in a power supply filter network?", "part": "((NOT SPECIFIED))", "number": "G7A02", "answers": ["Diodes", "Transformers and transducers", "Quartz crystals", "Capacitors and inductors"]}, {"answer": "A", "text": " Which type of rectifier circuit uses two diodes and a center-tapped transformer?", "part": "((NOT SPECIFIED))", "number": "G7A03", "answers": ["Full-wave", "Full-wave bridge", "Half-wave", "Synchronous"]}, {"answer": "A", "text": " What is an advantage of a half-wave rectifier in a power supply?", "part": "((NOT SPECIFIED))", "number": "G7A04", "answers": ["Only one diode is required", "The ripple frequency is twice that of a full-wave rectifier", "More current can be drawn from the half-wave rectifier", "The output voltage is two times the peak output voltage of the transformer"]}, {"answer": "B", "text": " What portion of the AC cycle is converted to DC by a half-wave rectifier?", "part": "((NOT SPECIFIED))", "number": "G7A05", "answers": ["90 degrees", "180 degrees", "270 degrees", "360 degrees"]}, {"answer": "D", "text": " What portion of the AC cycle is converted to DC by a full-wave rectifier?", "part": "((NOT SPECIFIED))", "number": "G7A06", "answers": ["90 degrees", "180 degrees", "270 degrees", "360 degrees"]}, {"answer": "A", "text": " What is the output waveform of an unfiltered full-wave rectifier connected to a resistive load?", "part": "((NOT SPECIFIED))", "number": "G7A07", "answers": ["A series of DC pulses at twice the frequency of the AC input", "A series of DC pulses at the same frequency as the AC input", "A sine wave at half the frequency of the AC input", "A steady DC voltage"]}, {"answer": "C", "text": " Which of the following is an advantage of a switchmode power supply as compared to a linear power supply?", "part": "((NOT SPECIFIED))", "number": "G7A08", "answers": ["Faster switching time makes higher output voltage possible", "Fewer circuit components are required", "High-frequency operation allows the use of smaller components", "All these choices are correct"]}, {"answer": "C", "text": " Which symbol in figure G7-1 represents a field effect transistor?", "part": "((NOT SPECIFIED))", "number": "G7A09", "answers": ["Symbol 2", "Symbol 5", "Symbol 1", "Symbol 4"]}, {"answer": "D", "text": " Which symbol in figure G7-1 represents a Zener diode?", "part": "((NOT SPECIFIED))", "number": "G7A10", "answers": ["Symbol 4", "Symbol 1", "Symbol 11", "Symbol 5"]}, {"answer": "B", "text": " Which symbol in figure G7-1 represents an NPN junction transistor?", "part": "((NOT SPECIFIED))", "number": "G7A11", "answers": ["Symbol 1", "Symbol 2", "Symbol 7", "Symbol 11"]}, {"answer": "C", "text": " Which symbol in Figure G7-1 represents a solid core transformer?", "part": "((NOT SPECIFIED))", "number": "G7A12", "answers": ["Symbol 4", "Symbol 7", "Symbol 6", "Symbol 1"]}, {"answer": "A", "text": " Which symbol in Figure G7-1 represents a tapped inductor?", "part": "((NOT SPECIFIED))", "number": "G7A13", "answers": ["Symbol 7", "Symbol 11", "Symbol 6", "Symbol 1"]}, {"answer": "B", "text": " What is the reason for neutralizing the final amplifier stage of a transmitter?", "part": "((NOT SPECIFIED))", "number": "G7B01", "answers": ["To limit the modulation index", "To eliminate self-oscillations", "To cut off the final amplifier during standby periods", "To keep the carrier on frequency"]}, {"answer": "D", "text": " Which of these classes of amplifiers has the highest efficiency?", "part": "((NOT SPECIFIED))", "number": "G7B02", "answers": ["Class A", "Class B", "Class AB", "Class C"]}, {"answer": "B", "text": " Which of the following describes the function of a two-input AND gate?", "part": "((NOT SPECIFIED))", "number": "G7B03", "answers": ["Output is high when either or both inputs are low", "Output is high only when both inputs are high", "Output is low when either or both inputs are high", "Output is low only when both inputs are high"]}, {"answer": "C", "text": " Which of the following describes the function of a two input NOR gate?", "part": "((NOT SPECIFIED))", "number": "G7B04", "answers": ["Output is high when either or both inputs are low", "Output is high only when both inputs are high", "Output is low when either or both inputs are high", "Output is low only when both inputs are high"]}, {"answer": "C", "text": " How many states does a 3-bit binary counter have?", "part": "((NOT SPECIFIED))", "number": "G7B05", "answers": ["3", "6", "8", "16"]}, {"answer": "A", "text": " What is a shift register?", "part": "((NOT SPECIFIED))", "number": "G7B06", "answers": ["A clocked array of circuits that passes data in steps along the array", "An array of operational amplifiers used for tri-state arithmetic operations", "A digital mixer", "An analog mixer"]}, {"answer": "D", "text": " Which of the following are basic components of a sine wave oscillator?", "part": "((NOT SPECIFIED))", "number": "G7B07", "answers": ["An amplifier and a divider", "A frequency multiplier and a mixer", "A circulator and a filter operating in a feed-forward loop", "A filter and an amplifier operating in a feedback loop"]}, {"answer": "B", "text": " How is the efficiency of an RF power amplifier determined?", "part": "((NOT SPECIFIED))", "number": "G7B08", "answers": ["Divide the DC input power by the DC output power", "Divide the RF output power by the DC input power", "Multiply the RF input power by the reciprocal of the RF output power", "Add the RF input power to the DC output power"]}, {"answer": "C", "text": " What determines the frequency of an LC oscillator?", "part": "((NOT SPECIFIED))", "number": "G7B09", "answers": ["The number of stages in the counter", "The number of stages in the divider", "The inductance and capacitance in the tank circuit", "The time delay of the lag circuit"]}, {"answer": "B", "text": " Which of the following describes a linear amplifier?", "part": "((NOT SPECIFIED))", "number": "G7B10", "answers": ["Any RF power amplifier used in conjunction with an amateur transceiver", "An amplifier in which the output preserves the input waveform", "A Class C high efficiency amplifier", "An amplifier used as a frequency multiplier"]}, {"answer": "B", "text": " For which of the following modes is a Class C power stage appropriate for amplifying a modulated signal?", "part": "((NOT SPECIFIED))", "number": "G7B11", "answers": ["SSB", "FM", "AM", "All these choices are correct"]}, {"answer": "B", "text": " Which of the following is used to process signals from the balanced modulator then send them to the mixer in some single sideband phone transmitters?", "part": "((NOT SPECIFIED))", "number": "G7C01", "answers": ["Carrier oscillator", "Filter", "IF amplifier", "RF amplifier"]}, {"answer": "D", "text": " Which circuit is used to combine signals from the carrier oscillator and speech amplifier then send the result to the filter in some single sideband phone transmitters?", "part": "((NOT SPECIFIED))", "number": "G7C02", "answers": ["Discriminator", "Detector", "IF amplifier", "Balanced modulator"]}, {"answer": "C", "text": " What circuit is used to process signals from the RF amplifier and local oscillator then send the result to the IF filter in a superheterodyne receiver?", "part": "((NOT SPECIFIED))", "number": "G7C03", "answers": ["Balanced modulator", "IF amplifier", "Mixer", "Detector"]}, {"answer": "D", "text": " What circuit is used to combine signals from the IF amplifier and BFO and send the result to the AF amplifier in some single sideband receivers?", "part": "((NOT SPECIFIED))", "number": "G7C04", "answers": ["RF oscillator", "IF filter", "Balanced modulator", "Product detector"]}, {"answer": "D", "text": " Which of the following is an advantage of a direct digital synthesizer (DDS)?", "part": "((NOT SPECIFIED))", "number": "G7C05", "answers": ["Wide tuning range and no need for band switching", "Relatively high-power output", "Relatively low power consumption", "Variable frequency with the stability of a crystal oscillator"]}, {"answer": "B", "text": " What should be the impedance of a low-pass filter as compared to the impedance of the transmission line into which it is inserted?", "part": "((NOT SPECIFIED))", "number": "G7C06", "answers": ["Substantially higher", "About the same", "Substantially lower", "Twice the transmission line impedance"]}, {"answer": "C", "text": " What is the simplest combination of stages that implement a superheterodyne receiver?", "part": "((NOT SPECIFIED))", "number": "G7C07", "answers": ["RF amplifier, detector, audio amplifier", "RF amplifier, mixer, IF discriminator", "HF oscillator, mixer, detector", "HF oscillator, prescaler, audio amplifier"]}, {"answer": "D", "text": " What circuit is used in analog FM receivers to convert IF output signals to audio?", "part": "((NOT SPECIFIED))", "number": "G7C08", "answers": ["Product detector", "Phase inverter", "Mixer", "Discriminator"]}, {"answer": "B", "text": " What is the phase difference between the I and Q signals that software-defined radio (SDR) equipment uses for modulation and demodulation?", "part": "((NOT SPECIFIED))", "number": "G7C09", "answers": ["Zero", "90 degrees", "180 degrees", "45 degrees"]}, {"answer": "B", "text": " What is an advantage of using I and Q signals in software-defined radios (SDRs)?", "part": "((NOT SPECIFIED))", "number": "G7C10", "answers": ["The need for high resolution analog-to-digital converters is eliminated", "All types of modulation can be created with appropriate processing", "Minimum detectible signal level is reduced", "Converting the signal from digital to analog creates mixing products"]}, {"answer": "A", "text": " What is meant by the term \"software-defined radio\" (SDR)?", "part": "((NOT SPECIFIED))", "number": "G7C11", "answers": ["A radio in which most major signal processing functions are performed by software", "A radio that provides computer interface for automatic logging of band and frequency", "A radio that uses crystal filters designed using software", "A computer model that can simulate performance of a radio to aid in the design process"]}, {"answer": "C", "text": " What is the frequency above which a low-pass filter's output power is less than half the input power?", "part": "((NOT SPECIFIED))", "number": "G7C12", "answers": ["Notch frequency", "Neper frequency", "Cutoff frequency", "Rolloff frequency"]}, {"answer": "D", "text": " What term specifies a filter's maximum ability to reject signals outside its passband?", "part": "((NOT SPECIFIED))", "number": "G7C13", "answers": ["Notch depth", "Rolloff", "Insertion loss", "Ultimate rejection"]}, {"answer": "A", "text": " The bandwidth of a band-pass filter is measured between what two frequencies?", "part": "((NOT SPECIFIED))", "number": "G7C14", "answers": ["Upper and lower half-power", "Cutoff and rolloff", "Pole and zero", "Image and harmonic"]}, {"answer": "A", "text": " What term specifies a filter's attenuation inside its passband?", "part": "((NOT SPECIFIED))", "number": "G7C15", "answers": ["Insertion loss", "Return loss", "Q", "Ultimate rejection"]}, {"answer": "A", "text": " Which of the following is a typical application for a Direct Digital Synthesizer?", "part": "((NOT SPECIFIED))", "number": "G7C16", "answers": ["A high-stability variable frequency oscillator in a transceiver", "A digital voltmeter", "A digital mode interface between a computer and a transceiver", "A high-sensitivity radio direction finder"]}, {"answer": "B", "text": " How is an FSK signal generated?", "part": "((NOT SPECIFIED))", "number": "G8A01", "answers": ["By keying an FM transmitter with a sub-audible tone", "By changing an oscillator's frequency directly with a digital control signal", "By using a transceiver's computer data interface protocol to change frequencies", "By reconfiguring the CW keying input to act as a tone generator"]}, {"answer": "B", "text": " What is the name of the process that changes the phase angle of an RF signal to convey information?", "part": "((NOT SPECIFIED))", "number": "G8A02", "answers": ["Phase convolution", "Phase modulation", "Phase transformation", "Phase inversion"]}, {"answer": "D", "text": " What is the name of the process that changes the instantaneous frequency of an RF wave to convey information?", "part": "((NOT SPECIFIED))", "number": "G8A03", "answers": ["Frequency convolution", "Frequency transformation", "Frequency conversion", "Frequency modulation"]}, {"answer": "B", "text": " What emission is produced by a reactance modulator connected to a transmitter RF amplifier stage?", "part": "((NOT SPECIFIED))", "number": "G8A04", "answers": ["Multiplex modulation", "Phase modulation", "Amplitude modulation", "Pulse modulation"]}, {"answer": "D", "text": " What type of modulation varies the instantaneous power level of the RF signal?", "part": "((NOT SPECIFIED))", "number": "G8A05", "answers": ["Frequency shift keying", "Phase modulation", "Frequency modulation", "Amplitude modulation"]}, {"answer": "D", "text": " Which of the following is characteristic of QPSK31?", "part": "((NOT SPECIFIED))", "number": "G8A06", "answers": ["It is sideband sensitive", "Its encoding provides error correction", "Its bandwidth is approximately the same as BPSK31", "All these choices are correct"]}, {"answer": "A", "text": " Which of the following phone emissions uses the narrowest bandwidth?", "part": "((NOT SPECIFIED))", "number": "G8A07", "answers": ["Single sideband", "Double sideband", "Phase modulation", "Frequency modulation"]}, {"answer": "D", "text": " Which of the following is an effect of overmodulation?", "part": "((NOT SPECIFIED))", "number": "G8A08", "answers": ["Insufficient audio", "Insufficient bandwidth", "Frequency drift", "Excessive bandwidth"]}, {"answer": "A", "text": " What type of modulation is used by the FT8 digital mode?", "part": "((NOT SPECIFIED))", "number": "G8A09", "answers": ["8-tone frequency shift keying", "Vestigial sideband", "Amplitude compressed AM", "Direct sequence spread spectrum"]}, {"answer": "C", "text": " What is meant by the term \"flat-topping,\" when referring to a single sideband phone transmission?", "part": "((NOT SPECIFIED))", "number": "G8A10", "answers": ["Signal distortion caused by insufficient collector current", "The transmitter's automatic level control (ALC) is properly adjusted", "Signal distortion caused by excessive drive", "The transmitter's carrier is properly suppressed"]}, {"answer": "A", "text": " What is the modulation envelope of an AM signal?", "part": "((NOT SPECIFIED))", "number": "G8A11", "answers": ["The waveform created by connecting the peak values of the modulated signal", "The carrier frequency that contains the signal", "Spurious signals that envelop nearby frequencies", "The bandwidth of the modulated signal"]}, {"answer": "B", "text": " Which of the following narrow-band digital modes can receive signals with very low signal-to-noise ratios?", "part": "((NOT SPECIFIED))", "number": "G8A12", "answers": ["MSK144", "FT8", "AMTOR", "MFSK32"]}, {"answer": "B", "text": " Which mixer input is varied or tuned to convert signals of different frequencies to an intermediate frequency (IF)?", "part": "((NOT SPECIFIED))", "number": "G8B01", "answers": ["Image frequency", "Local oscillator", "RF input", "Beat frequency oscillator"]}, {"answer": "B", "text": " If a receiver mixes a 13.800 MHz VFO with a 14.255 MHz received signal to produce a 455 kHz intermediate frequency (IF) signal, what type of interference will a 13.345 MHz signal produce in the receiver?", "part": "((NOT SPECIFIED))", "number": "G8B02", "answers": ["Quadrature noise", "Image response", "Mixer interference", "Intermediate interference"]}, {"answer": "A", "text": " What is another term for the mixing of two RF signals?", "part": "((NOT SPECIFIED))", "number": "G8B03", "answers": ["Heterodyning", "Synthesizing", "Cancellation", "Phase inverting"]}, {"answer": "D", "text": " What is the stage in a VHF FM transmitter that generates a harmonic of a lower frequency signal to reach the desired operating frequency?", "part": "((NOT SPECIFIED))", "number": "G8B04", "answers": ["Mixer", "Reactance modulator", "Pre-emphasis network", "Multiplier"]}, {"answer": "D", "text": " What is the approximate bandwidth of a PACTOR-III signal at maximum data rate?", "part": "((NOT SPECIFIED))", "number": "G8B05", "answers": ["31.5 Hz", "500 Hz", "1800 Hz", "2300 Hz"]}, {"answer": "D", "text": " What is the total bandwidth of an FM phone transmission having 5 kHz deviation and 3 kHz modulating frequency?", "part": "((NOT SPECIFIED))", "number": "G8B06", "answers": ["3 kHz", "5 kHz", "8 kHz", "16 kHz"]}, {"answer": "B", "text": " What is the frequency deviation for a 12.21 MHz reactance modulated oscillator in a 5 kHz deviation, 146.52 MHz FM phone transmitter?", "part": "((NOT SPECIFIED))", "number": "G8B07", "answers": ["101.75 Hz", "416.7 Hz", "5 kHz", "60 kHz"]}, {"answer": "B", "text": " Why is it important to know the duty cycle of the mode you are using when transmitting?", "part": "((NOT SPECIFIED))", "number": "G8B08", "answers": ["To aid in tuning your transmitter", "Some modes have high duty cycles that could exceed the transmitter's average power rating", "To allow time for the other station to break in during a transmission", "The attenuator will have to be adjusted accordingly"]}, {"answer": "D", "text": " Why is it good to match receiver bandwidth to the bandwidth of the operating mode?", "part": "((NOT SPECIFIED))", "number": "G8B09", "answers": ["It is required by FCC rules", "It minimizes power consumption in the receiver", "It improves impedance matching of the antenna", "It results in the best signal-to-noise ratio"]}, {"answer": "B", "text": " What is the relationship between transmitted symbol rate and bandwidth?", "part": "((NOT SPECIFIED))", "number": "G8B10", "answers": ["Symbol rate and bandwidth are not related", "Higher symbol rates require wider bandwidth", "Lower symbol rates require wider bandwidth", "Bandwidth is always half the symbol rate"]}, {"answer": "C", "text": " What combination of a mixer's Local Oscillator (LO) and RF input frequencies is found in the output?", "part": "((NOT SPECIFIED))", "number": "G8B11", "answers": ["The ratio", "The average", "The sum and difference", "The arithmetic product"]}, {"answer": "A", "text": " What process combines two signals in a non-linear circuit or connection to produce unwanted spurious outputs?", "part": "((NOT SPECIFIED))", "number": "G8B12", "answers": ["Intermodulation", "Heterodyning", "Detection", "Rolloff"]}, {"answer": "C", "text": " On what band do amateurs share channels with the unlicensed Wi-Fi service?", "part": "((NOT SPECIFIED))", "number": "G8C01", "answers": ["432 MHz", "902 MHz", "2.4 GHz", "10.7 GHz"]}, {"answer": "A", "text": " Which digital mode is used as a low-power beacon for assessing HF propagation?", "part": "((NOT SPECIFIED))", "number": "G8C02", "answers": ["WSPR", "Olivia", "PSK31", "SSB-SC"]}, {"answer": "C", "text": " What part of a packet radio frame contains the routing and handling information?", "part": "((NOT SPECIFIED))", "number": "G8C03", "answers": ["Directory", "Preamble", "Header", "Footer"]}, {"answer": "C", "text": " Which of the following describes Baudot code?", "part": "((NOT SPECIFIED))", "number": "G8C04", "answers": ["A 7-bit code with start, stop, and parity bits", "A code using error detection and correction", "A 5-bit code with additional start and stop bits", "A code using SELCAL and LISTEN"]}, {"answer": "A", "text": " In the PACTOR protocol, what is meant by a NAK response to a transmitted packet?", "part": "((NOT SPECIFIED))", "number": "G8C05", "answers": ["The receiver is requesting the packet be retransmitted", "The receiver is reporting the packet was received without error", "The receiver is busy decoding the packet", "The entire file has been received correctly"]}, {"answer": "B", "text": " What action results from a failure to exchange information due to excessive transmission attempts when using PACTOR or WINMOR?", "part": "((NOT SPECIFIED))", "number": "G8C06", "answers": ["The checksum overflows", "The connection is dropped", "Packets will be routed incorrectly", "Encoding reverts to the default character set"]}, {"answer": "B", "text": " How does the receiving station respond to an ARQ data mode packet containing errors?", "part": "((NOT SPECIFIED))", "number": "G8C07", "answers": ["It terminates the contact", "It requests the packet be retransmitted", "It sends the packet back to the transmitting station", "It requests a change in transmitting protocol"]}, {"answer": "B", "text": " Which of the following statements is true about PSK31?", "part": "((NOT SPECIFIED))", "number": "G8C08", "answers": ["Upper case letters are sent with more power", "Upper case letters use longer Varicode bit sequences and thus slow down transmission", "Error correction is used to ensure accurate message reception", "Higher power is needed as compared to RTTY for similar error rates"]}, {"answer": "A", "text": " What does the number 31 represent in \"PSK31\"?", "part": "((NOT SPECIFIED))", "number": "G8C09", "answers": ["The approximate transmitted symbol rate", "The version of the PSK protocol", "The year in which PSK31 was invented", "The number of characters that can be represented by PSK31"]}, {"answer": "C", "text": " How does forward error correction (FEC) allow the receiver to correct errors in received data packets?", "part": "((NOT SPECIFIED))", "number": "G8C10", "answers": ["By controlling transmitter output power for optimum signal strength", "By using the Varicode character set", "By transmitting redundant information with the data", "By using a parity bit with each character"]}, {"answer": "D", "text": " How are the two separate frequencies of a Frequency Shift Keyed (FSK) signal identified?", "part": "((NOT SPECIFIED))", "number": "G8C11", "answers": ["Dot and dash", "On and off", "High and low", "Mark and space"]}, {"answer": "A", "text": " Which type of code is used for sending characters in a PSK31 signal?", "part": "((NOT SPECIFIED))", "number": "G8C12", "answers": ["Varicode", "Viterbi", "Volumetric", "Binary"]}, {"answer": "D", "text": " What is indicated on a waterfall display by one or more vertical lines on either side of a digital signal?", "part": "((NOT SPECIFIED))", "number": "G8C13", "answers": ["Long path propagation", "Backscatter propagation", "Insufficient modulation", "Overmodulation"]}, {"answer": "C", "text": " Which of the following describes a waterfall display?", "part": "((NOT SPECIFIED))", "number": "G8C14", "answers": ["Frequency is horizontal, signal strength is vertical, time is intensity", "Frequency is vertical, signal strength is intensity, time is horizontal", "Frequency is horizontal, signal strength is intensity, time is vertical", "Frequency is vertical, signal strength is horizontal, time is intensity"]}, {"answer": "A", "text": " Which of the following factors determine the characteristic impedance of a parallel conductor antenna feed line?", "part": "((NOT SPECIFIED))", "number": "G9A01", "answers": ["The distance between the centers of the conductors and the radius of the conductors", "The distance between the centers of the conductors and the length of the line", "The radius of the conductors and the frequency of the signal", "The frequency of the signal and the length of the line"]}, {"answer": "B", "text": " What are the typical characteristic impedances of coaxial cables used for antenna feed lines at amateur stations?", "part": "((NOT SPECIFIED))", "number": "G9A02", "answers": ["25 and 30 ohms", "50 and 75 ohms", "80 and 100 ohms", "500 and 750 ohms"]}, {"answer": "D", "text": " What is the typical characteristic impedance of \"window line\" parallel transmission line?", "part": "((NOT SPECIFIED))", "number": "G9A03", "answers": ["50 ohms", "75 ohms", "100 ohms", "450 ohms"]}, {"answer": "C", "text": " What might cause reflected power at the point where a feed line connects to an antenna?", "part": "((NOT SPECIFIED))", "number": "G9A04", "answers": ["Operating an antenna at its resonant frequency", "Using more transmitter power than the antenna can handle", "A difference between feed-line impedance and antenna feed-point impedance", "Feeding the antenna with unbalanced feed line"]}, {"answer": "B", "text": " How does the attenuation of coaxial cable change as the frequency of the signal it is carrying increases?", "part": "((NOT SPECIFIED))", "number": "G9A05", "answers": ["Attenuation is independent of frequency", "Attenuation increases", "Attenuation decreases", "Attenuation reaches a maximum at approximately 18 MHz"]}, {"answer": "D", "text": " In what units is RF feed line loss usually expressed?", "part": "((NOT SPECIFIED))", "number": "G9A06", "answers": ["Ohms per 1000 feet", "Decibels per 1000 feet", "Ohms per 100 feet", "Decibels per 100 feet"]}, {"answer": "D", "text": " What must be done to prevent standing waves on an antenna feed line?", "part": "((NOT SPECIFIED))", "number": "G9A07", "answers": ["The antenna feed point must be at DC ground potential", "The feed line must be cut to a length equal to an odd number of electrical quarter wavelengths", "The feed line must be cut to a length equal to an even number of physical half wavelengths", "The antenna feed point impedance must be matched to the characteristic impedance of the feed line"]}, {"answer": "B", "text": " If the SWR on an antenna feed line is 5 to 1, and a matching network at the transmitter end of the feed line is adjusted to 1 to 1 SWR, what is the resulting SWR on the feed line?", "part": "((NOT SPECIFIED))", "number": "G9A08", "answers": ["1 to 1", "5 to 1", "Between 1 to 1 and 5 to 1 depending on the characteristic impedance of the line", "Between 1 to 1 and 5 to 1 depending on the reflected power at the transmitter"]}, {"answer": "A", "text": " What standing wave ratio will result when connecting a 50 ohm feed line to a non-reactive load having 200 ohm impedance?", "part": "((NOT SPECIFIED))", "number": "G9A09", "answers": ["4:1", "1:4", "2:1", "1:2"]}, {"answer": "D", "text": " What standing wave ratio will result when connecting a 50 ohm feed line to a non-reactive load having 10 ohm impedance?", "part": "((NOT SPECIFIED))", "number": "G9A10", "answers": ["2:1", "50:1", "1:5", "5:1"]}, {"answer": "B", "text": " What standing wave ratio will result when connecting a 50 ohm feed line to a non-reactive load having 50 ohm impedance?", "part": "((NOT SPECIFIED))", "number": "G9A11", "answers": ["2:1", "1:1", "50:50", "0:0"]}, {"answer": "B", "text": " What is the interaction between high standing wave ratio (SWR) and transmission line loss?", "part": "((NOT SPECIFIED))", "number": "G9A12", "answers": ["There is no interaction between transmission line loss and SWR", "If a transmission line is lossy, high SWR will increase the loss", "High SWR makes it difficult to measure transmission line loss", "High SWR reduces the relative effect of transmission line loss"]}, {"answer": "A", "text": " What is the effect of transmission line loss on SWR measured at the input to the line?", "part": "((NOT SPECIFIED))", "number": "G9A13", "answers": ["The higher the transmission line loss, the more the SWR will read artificially low", "The higher the transmission line loss, the more the SWR will read artificially high", "The higher the transmission line loss, the more accurate the SWR measurement will be", "Transmission line loss does not affect the SWR measurement"]}, {"answer": "B", "text": " What is one disadvantage of a directly fed random-wire HF antenna?", "part": "((NOT SPECIFIED))", "number": "G9B01", "answers": ["It must be longer than 1 wavelength", "You may experience RF burns when touching metal objects in your station", "It produces only vertically polarized radiation", "It is more effective on the lower HF bands than on the higher bands"]}, {"answer": "B", "text": " Which of the following is a common way to adjust the feed-point impedance of a quarter wave ground-plane vertical antenna to be approximately 50 ohms?", "part": "((NOT SPECIFIED))", "number": "G9B02", "answers": ["Slope the radials upward", "Slope the radials downward", "Lengthen the radials", "Shorten the radials"]}, {"answer": "D", "text": " Which of the following best describes the radiation pattern of a quarter-wave, ground-plane vertical antenna?", "part": "((NOT SPECIFIED))", "number": "G9B03", "answers": ["Bi-directional in azimuth", "Isotropic", "Hemispherical", "Omnidirectional in azimuth"]}, {"answer": "A", "text": " What is the radiation pattern of a dipole antenna in free space in a plane containing the conductor?", "part": "((NOT SPECIFIED))", "number": "G9B04", "answers": ["It is a figure-eight at right angles to the antenna", "It is a figure-eight off both ends of the antenna", "It is a circle (equal radiation in all directions)", "It has a pair of lobes on one side of the antenna and a single lobe on the other side"]}, {"answer": "C", "text": " How does antenna height affect the horizontal (azimuthal) radiation pattern of a horizontal dipole HF antenna?", "part": "((NOT SPECIFIED))", "number": "G9B05", "answers": ["If the antenna is too high, the pattern becomes unpredictable", "Antenna height has no effect on the pattern", "If the antenna is less than 1/2 wavelength high, the azimuthal pattern is almost omnidirectional", "If the antenna is less than 1/2 wavelength high, radiation off the ends of the wire is eliminated"]}, {"answer": "C", "text": " Where should the radial wires of a ground-mounted vertical antenna system be placed?", "part": "((NOT SPECIFIED))", "number": "G9B06", "answers": ["As high as possible above the ground", "Parallel to the antenna element", "On the surface of the Earth or buried a few inches below the ground", "At the center of the antenna"]}, {"answer": "B", "text": " How does the feed-point impedance of a 1/2 wave dipole antenna change as the antenna is lowered below 1/4 wave above ground?", "part": "((NOT SPECIFIED))", "number": "G9B07", "answers": ["It steadily increases", "It steadily decreases", "It peaks at about 1/8 wavelength above ground", "It is unaffected by the height above ground"]}, {"answer": "A", "text": " How does the feed point impedance of a 1/2 wave dipole change as the feed point is moved from the center toward the ends?", "part": "((NOT SPECIFIED))", "number": "G9B08", "answers": ["It steadily increases", "It steadily decreases", "It peaks at about 1/8 wavelength from the end", "It is unaffected by the location of the feed point"]}, {"answer": "A", "text": " Which of the following is an advantage of a horizontally polarized as compared to a vertically polarized HF antenna?", "part": "((NOT SPECIFIED))", "number": "G9B09", "answers": ["Lower ground reflection losses", "Lower feed-point impedance", "Shorter radials", "Lower radiation resistance"]}, {"answer": "D", "text": " What is the approximate length for a 1/2 wave dipole antenna cut for 14.250 MHz?", "part": "((NOT SPECIFIED))", "number": "G9B10", "answers": ["8 feet", "16 feet", "24 feet", "33 feet"]}, {"answer": "C", "text": " What is the approximate length for a 1/2 wave dipole antenna cut for 3.550 MHz?", "part": "((NOT SPECIFIED))", "number": "G9B11", "answers": ["42 feet", "84 feet", "132 feet", "263 feet"]}, {"answer": "A", "text": " What is the approximate length for a 1/4 wave vertical antenna cut for 28.5 MHz?", "part": "((NOT SPECIFIED))", "number": "G9B12", "answers": ["8 feet", "11 feet", "16 feet", "21 feet"]}, {"answer": "A", "text": " Which of the following would increase the bandwidth of a Yagi antenna?", "part": "((NOT SPECIFIED))", "number": "G9C01", "answers": ["Larger-diameter elements", "Closer element spacing", "Loading coils in series with the element", "Tapered-diameter elements"]}, {"answer": "B", "text": " What is the approximate length of the driven element of a Yagi antenna?", "part": "((NOT SPECIFIED))", "number": "G9C02", "answers": ["1/4 wavelength", "1/2 wavelength", "3/4 wavelength", "1 wavelength"]}, {"answer": "A", "text": " How do the lengths of a three-element Yagi reflector and director compare to that of the driven element?", "part": "((NOT SPECIFIED))", "number": "G9C03", "answers": ["The reflector is longer, and the director is shorter", "The reflector is shorter, and the director is longer", "They are all the same length", "Relative length depends on the frequency of operation"]}, {"answer": "B", "text": " How does antenna gain stated in dBi compare to gain stated in dBd for the same antenna?", "part": "((NOT SPECIFIED))", "number": "G9C04", "answers": ["dBi gain figures are 2.15 dB lower than dBd gain figures", "dBi gain figures are 2.15 dB higher than dBd gain figures", "dBi gain figures are the same as the square root of dBd gain figures multiplied by 2.15", "dBi gain figures are the reciprocal of dBd gain figures + 2.15 dB"]}, {"answer": "A", "text": " How does increasing boom length and adding directors affect a Yagi antenna?", "part": "((NOT SPECIFIED))", "number": "G9C05", "answers": ["Gain increases", "Beamwidth increases", "Front-to-back ratio decreases", "Front-to-side ratio decreases"]}, {"answer": "D", "text": " What configuration of the loops of a two-element quad antenna must be used for the antenna to operate as a beam antenna, assuming one of the elements is used as a reflector?", "part": "((NOT SPECIFIED))", "number": "G9C06", "answers": ["The driven element must be fed with a balun transformer", "There must be an open circuit in the driven element at the point opposite the feed point", "The reflector element must be approximately 5 percent shorter than the driven element", "The reflector element must be approximately 5 percent longer than the driven element"]}, {"answer": "C", "text": " What does \"front-to-back ratio\" mean in reference to a Yagi antenna?", "part": "((NOT SPECIFIED))", "number": "G9C07", "answers": ["The number of directors versus the number of reflectors", "The relative position of the driven element with respect to the reflectors and directors", "The power radiated in the major radiation lobe compared to that in the opposite direction", "The ratio of forward gain to dipole gain"]}, {"answer": "D", "text": " What is meant by the \"main lobe\" of a directive antenna?", "part": "((NOT SPECIFIED))", "number": "G9C08", "answers": ["The magnitude of the maximum vertical angle of radiation", "The point of maximum current in a radiating antenna element", "The maximum voltage standing wave point on a radiating element", "The direction of maximum radiated field strength from the antenna"]}, {"answer": "B", "text": " How does the gain of two three-element, horizontally polarized Yagi antennas spaced vertically 1/2 wavelength apart typically compare to the gain of a single three-element Yagi?", "part": "((NOT SPECIFIED))", "number": "G9C09", "answers": ["Approximately 1.5 dB higher", "Approximately 3 dB higher", "Approximately 6 dB higher", "Approximately 9 dB higher"]}, {"answer": "D", "text": " Which of the following can be adjusted to optimize forward gain, front-to-back ratio, or SWR bandwidth of a Yagi antenna?", "part": "((NOT SPECIFIED))", "number": "G9C10", "answers": ["The physical length of the boom", "The number of elements on the boom", "The spacing of each element along the boom", "All these choices are correct"]}, {"answer": "C", "text": " Which HF antenna would be the best to use for minimizing interference?", "part": "((NOT SPECIFIED))", "number": "G9C11", "answers": ["A quarter-wave vertical antenna", "An isotropic antenna", "A directional antenna", "An omnidirectional antenna"]}, {"answer": "A", "text": " Which of the following is an advantage of using a gamma match with a Yagi antenna?", "part": "((NOT SPECIFIED))", "number": "G9C12", "answers": ["It does not require that the driven element be insulated from the boom", "It does not require any inductors or capacitors", "It is useful for matching multiband antennas", "All these choices are correct"]}, {"answer": "A", "text": " Approximately how long is each side of the driven element of a quad antenna?", "part": "((NOT SPECIFIED))", "number": "G9C13", "answers": ["1/4 wavelength", "1/2 wavelength", "3/4 wavelength", "1 wavelength"]}, {"answer": "A", "text": " How does the forward gain of a two-element quad antenna compare to the forward gain of a three-element Yagi antenna?", "part": "((NOT SPECIFIED))", "number": "G9C14", "answers": ["About the same", "About 2/3 as much", "About 1.5 times as much", "About twice as much"]}, {"answer": "A", "text": " What is meant by the terms dBi and dBd when referring to antenna gain?", "part": "((NOT SPECIFIED))", "number": "G9C15", "answers": ["dBi refers to an isotropic antenna, dBd refers to a dipole antenna", "dBi refers to an ionospheric reflecting antenna, dBd refers to a dissipative antenna", "dBi refers to an inverted-vee antenna, dBd refers to a downward reflecting antenna", "dBi refers to an isometric antenna, dBd refers to a discone antenna"]}, {"answer": "A", "text": " What is a beta or hairpin match?", "part": "((NOT SPECIFIED))", "number": "G9C16", "answers": ["It is a shorted transmission line stub placed at the feed point of a Yagi antenna to provide impedance matching", "It is a (1/4) wavelength section of 75 ohm coax in series with the feed point of a Yagi to provide impedance matching", "It is a series capacitor selected to cancel the inductive reactance of a folded dipole antenna", "It is a section of 300 ohm twinlead used to match a folded dipole antenna"]}, {"answer": "A", "text": " Which of the following antenna types will be most effective as a Near Vertical Incidence Skywave (NVIS) antenna for short-skip communications on 40 meters during the day?", "part": "((NOT SPECIFIED))", "number": "G9D01", "answers": ["A horizontal dipole placed between 1/10 and 1/4 wavelength above the ground", "A vertical antenna placed between 1/4 and 1/2 wavelength above the ground", "A left-hand circularly polarized antenna", "A right-hand circularly polarized antenna"]}, {"answer": "D", "text": " What is the feed-point impedance of an end-fed half-wave antenna?", "part": "((NOT SPECIFIED))", "number": "G9D02", "answers": ["Very low", "Approximately 50 ohms", "Approximately 300 ohms", "Very high"]}, {"answer": "C", "text": " In which direction is the maximum radiation from a portable VHF/UHF \"halo\" antenna?", "part": "((NOT SPECIFIED))", "number": "G9D03", "answers": ["Broadside to the plane of the halo", "Opposite the feed point", "Omnidirectional in the plane of the halo", "Toward the halo's supporting mast"]}, {"answer": "A", "text": " What is the primary purpose of antenna traps?", "part": "((NOT SPECIFIED))", "number": "G9D04", "answers": ["To permit multiband operation", "To notch spurious frequencies", "To provide balanced feed-point impedance", "To prevent out-of-band operation"]}, {"answer": "D", "text": " What is an advantage of vertical stacking of horizontally polarized Yagi antennas?", "part": "((NOT SPECIFIED))", "number": "G9D05", "answers": ["It allows quick selection of vertical or horizontal polarization", "It allows simultaneous vertical and horizontal polarization", "It narrows the main lobe in azimuth", "It narrows the main lobe in elevation"]}, {"answer": "A", "text": " Which of the following is an advantage of a log periodic antenna?", "part": "((NOT SPECIFIED))", "number": "G9D06", "answers": ["Wide bandwidth", "Higher gain per element than a Yagi antenna", "Harmonic suppression", "Polarization diversity"]}, {"answer": "A", "text": " Which of the following describes a log periodic antenna?", "part": "((NOT SPECIFIED))", "number": "G9D07", "answers": ["Element length and spacing vary logarithmically along the boom", "Impedance varies periodically as a function of frequency", "Gain varies logarithmically as a function of frequency", "SWR varies periodically as a function of boom length"]}, {"answer": "B", "text": " How does a \"screwdriver\" mobile antenna adjust its feed-point impedance?", "part": "((NOT SPECIFIED))", "number": "G9D08", "answers": ["By varying its body capacitance", "By varying the base loading inductance", "By extending and retracting the whip", "By deploying a capacitance hat"]}, {"answer": "A", "text": " What is the primary use of a Beverage antenna?", "part": "((NOT SPECIFIED))", "number": "G9D09", "answers": ["Directional receiving for low HF bands", "Directional transmitting for low HF bands", "Portable direction finding at higher HF frequencies", "Portable direction finding at lower HF frequencies"]}, {"answer": "B", "text": " In which direction or directions does an electrically small loop (less than 1/3 wavelength in circumference) have nulls in its radiation pattern?", "part": "((NOT SPECIFIED))", "number": "G9D10", "answers": ["In the plane of the loop", "Broadside to the loop", "Broadside and in the plane of the loop", "Electrically small loops are omnidirectional"]}, {"answer": "D", "text": " Which of the following is a disadvantage of multiband antennas?", "part": "((NOT SPECIFIED))", "number": "G9D11", "answers": ["They present low impedance on all design frequencies", "They must be used with an antenna tuner", "They must be fed with open wire line", "They have poor harmonic rejection"]}, {"answer": "A", "text": " What is the common name of a dipole with a single central support?", "part": "((NOT SPECIFIED))", "number": "G9D12", "answers": ["Inverted V", "Inverted L", "Sloper", "Lazy H"]}, {"answer": "C", "text": " What is the combined vertical and horizontal polarization pattern of a multi-wavelength, horizontal loop antenna?", "part": "((NOT SPECIFIED))", "number": "G9D13", "answers": ["A figure-eight, similar to a dipole", "Four major loops with deep nulls", "Virtually omnidirectional with a lower peak vertical radiation angle than a dipole", "Radiation maximum is straight up"]}, {"answer": "A", "text": " What is one way that RF energy can affect human body tissue?", "part": "((NOT SPECIFIED))", "number": "G0A01", "answers": ["It heats body tissue", "It causes radiation poisoning", "It causes the blood count to reach a dangerously low level", "It cools body tissue"]}, {"answer": "D", "text": " Which of the following properties is important in estimating whether an RF signal exceeds the maximum permissible exposure (MPE)?", "part": "((NOT SPECIFIED))", "number": "G0A02", "answers": ["Its duty cycle", "Its frequency", "Its power density", "All these choices are correct"]}, {"answer": "D", "text": " How can you determine that your station complies with FCC RF exposure regulations?", "part": "[97.13(c)(1)]", "number": "G0A03", "answers": ["By calculation based on FCC OET Bulletin 65", "By calculation based on computer modeling", "By measurement of field strength using calibrated equipment", "All these choices are correct"]}, {"answer": "D", "text": " What does \"time averaging\" mean in reference to RF radiation exposure?", "part": "((NOT SPECIFIED))", "number": "G0A04", "answers": ["The average amount of power developed by the transmitter over a specific 24-hour period", "The average time it takes RF radiation to have any long-term effect on the body", "The total time of the exposure", "The total RF exposure averaged over a certain time"]}, {"answer": "A", "text": " What must you do if an evaluation of your station shows RF energy radiated from your station exceeds permissible limits?", "part": "((NOT SPECIFIED))", "number": "G0A05", "answers": ["Take action to prevent human exposure to the excessive RF fields", "File an Environmental Impact Statement (EIS-97) with the FCC", "Secure written permission from your neighbors to operate above the controlled MPE limits", "All these choices are correct"]}, {"answer": "D", "text": " What precaution should be taken when installing a ground-mounted antenna?", "part": "((NOT SPECIFIED))", "number": "G0A06", "answers": ["It should not be installed higher than you can reach", "It should not be installed in a wet area", "It should be limited to 10 feet in height", "It should be installed such that it is protected against unauthorized access"]}, {"answer": "A", "text": " What effect does transmitter duty cycle have when evaluating RF exposure?", "part": "((NOT SPECIFIED))", "number": "G0A07", "answers": ["A lower transmitter duty cycle permits greater short-term exposure levels", "A higher transmitter duty cycle permits greater short-term exposure levels", "Low duty cycle transmitters are exempt from RF exposure evaluation requirements", "High duty cycle transmitters are exempt from RF exposure requirements"]}, {"answer": "C", "text": " Which of the following steps must an amateur operator take to ensure compliance with RF safety regulations when transmitter power exceeds levels specified in FCC Part 97.13?", "part": "((NOT SPECIFIED))", "number": "G0A08", "answers": ["Post a copy of FCC Part 97.13 in the station", "Post a copy of OET Bulletin 65 in the station", "Perform a routine RF exposure evaluation", "Contact the FCC for a visit to conduct a station evaluation"]}, {"answer": "B", "text": " What type of instrument can be used to accurately measure an RF field?", "part": "((NOT SPECIFIED))", "number": "G0A09", "answers": ["A receiver with an S meter", "A calibrated field strength meter with a calibrated antenna", "An SWR meter with a peak-reading function", "An oscilloscope with a high-stability crystal marker generator"]}, {"answer": "D", "text": " What is one thing that can be done if evaluation shows that a neighbor might receive more than the allowable limit of RF exposure from the main lobe of a directional antenna?", "part": "((NOT SPECIFIED))", "number": "G0A10", "answers": ["Change to a non-polarized antenna with higher gain", "Post a warning sign that is clearly visible to the neighbor", "Use an antenna with a higher front-to-back ratio", "Take precautions to ensure that the antenna cannot be pointed in their direction"]}, {"answer": "C", "text": " What precaution should you take if you install an indoor transmitting antenna?", "part": "((NOT SPECIFIED))", "number": "G0A11", "answers": ["Locate the antenna close to your operating position to minimize feed-line radiation", "Position the antenna along the edge of a wall to reduce parasitic radiation", "Make sure that MPE limits are not exceeded in occupied areas", "Make sure the antenna is properly shielded"]}, {"answer": "A", "text": " Which wire or wires in a four-conductor connection should be attached to fuses or circuit breakers in a device operated from a 240 VAC single phase source?", "part": "((NOT SPECIFIED))", "number": "G0B01", "answers": ["Only the two wires carrying voltage", "Only the neutral wire", "Only the ground wire", "All wires"]}, {"answer": "C", "text": " According the National Electrical Code, what is the minimum wire size that may be used safely for wiring with a 20 ampere circuit breaker?", "part": "((NOT SPECIFIED))", "number": "G0B02", "answers": ["AWG number 20", "AWG number 16", "AWG number 12", "AWG number 8"]}, {"answer": "D", "text": " Which size of fuse or circuit breaker would be appropriate to use with a circuit that uses AWG number 14 wiring?", "part": "((NOT SPECIFIED))", "number": "G0B03", "answers": ["100 amperes", "60 amperes", "30 amperes", "15 amperes"]}, {"answer": "A", "text": " Which of the following is a primary reason for not placing a gasoline-fueled generator inside an occupied area?", "part": "((NOT SPECIFIED))", "number": "G0B04", "answers": ["Danger of carbon monoxide poisoning", "Danger of engine over torque", "Lack of oxygen for adequate combustion", "Lack of nitrogen for adequate combustion"]}, {"answer": "B", "text": " Which of the following conditions will cause a Ground Fault Circuit Interrupter (GFCI) to disconnect the 120 or 240 Volt AC line power to a device?", "part": "((NOT SPECIFIED))", "number": "G0B05", "answers": ["Current flowing from one or more of the voltage-carrying wires to the neutral wire", "Current flowing from one or more of the voltage-carrying wires directly to ground", "Overvoltage on the voltage-carrying wires", "All these choices are correct"]}, {"answer": "C", "text": " Which of the following is covered by the National Electrical Code?", "part": "((NOT SPECIFIED))", "number": "G0B06", "answers": ["Acceptable bandwidth limits", "Acceptable modulation limits", "Electrical safety inside the ham shack", "RF exposure limits of the human body"]}, {"answer": "B", "text": " Which of these choices should be observed when climbing a tower using a safety belt or harness?", "part": "((NOT SPECIFIED))", "number": "G0B07", "answers": ["Never lean back and rely on the belt alone to support your weight", "Confirm that the belt is rated for the weight of the climber and that it is within its allowable service life", "Ensure that all heavy tools are securely fastened to the belt D-ring", "All these choices are correct"]}, {"answer": "B", "text": " What should be done by any person preparing to climb a tower that supports electrically powered devices?", "part": "((NOT SPECIFIED))", "number": "G0B08", "answers": ["Notify the electric company that a person will be working on the tower", "Make sure all circuits that supply power to the tower are locked out and tagged", "Unground the base of the tower", "All these choices are correct"]}, {"answer": "A", "text": " Which of the following is true of an emergency generator installation?", "part": "((NOT SPECIFIED))", "number": "G0B09", "answers": ["The generator should be located in a well-ventilated area", "The generator must be insulated from ground", "Fuel should be stored near the generator for rapid refueling in case of an emergency", "All these choices are correct"]}, {"answer": "A", "text": " Which of the following is a danger from lead-tin solder?", "part": "((NOT SPECIFIED))", "number": "G0B10", "answers": ["Lead can contaminate food if hands are not washed carefully after handling the solder", "High voltages can cause lead-tin solder to disintegrate suddenly", "Tin in the solder can \"cold flow,\" causing shorts in the circuit", "RF energy can convert the lead into a poisonous gas"]}, {"answer": "D", "text": " Which of the following is good practice for lightning protection grounds?", "part": "((NOT SPECIFIED))", "number": "G0B11", "answers": ["They must be bonded to all buried water and gas lines", "Bends in ground wires must be made as close as possible to a right angle", "Lightning grounds must be connected to all ungrounded wiring", "They must be bonded together with all other grounds"]}, {"answer": "C", "text": " What is the purpose of a power supply interlock?", "part": "((NOT SPECIFIED))", "number": "G0B12", "answers": ["To prevent unauthorized changes to the circuit that would void the manufacturer's warranty", "To shut down the unit if it becomes too hot", "To ensure that dangerous voltages are removed if the cabinet is opened", "To shut off the power supply if too much voltage is produced"]}, {"answer": "A", "text": " What must you do when powering your house from an emergency generator?", "part": "((NOT SPECIFIED))", "number": "G0B13", "answers": ["Disconnect the incoming utility power feed", "Insure that the generator is not grounded", "Insure that all lightning grounds are disconnected", "All these choices are correct"]}, {"answer": "B", "text": " What precaution should you take whenever you adjust or repair an antenna?", "part": "((NOT SPECIFIED))", "number": "G0B14", "answers": ["Ensure that you and the antenna structure are grounded", "Turn off the transmitter and disconnect the feed line", "Wear a radiation badge", "All these choices are correct"]}]