G1A01~What are the frequency limits for General class operators in the 160-meter band?~1800 - 1900 kHz~1900 - 2000 kHz~1800 - 2000 kHz~1825 - 2000 kHz~C~[97.301d]~None
G1A02~What are the frequency limits for General class operators in the 75/80-meter band (ITU Region 2)?~3525 - 3750 kHz and 3850 - 4000 kHz~3525 - 3775 kHz and 3875 - 4000 kHz~3525 - 3750 kHz and 3875 - 4000 kHz~3525 - 3775 kHz and 3850 - 4000 kHz~A~[97.301d]~None
G1A03~What are the frequency limits for General class operators in the 40-meter band (ITU Region 2)?~7025 - 7175 kHz and 7200 - 7300 kHz~7025 - 7175 kHz and 7225 - 7300 kHz~7025 - 7150 kHz and 7200 - 7300 kHz~7025 - 7150 kHz and 7225 - 7300 kHz~D~[97.301d]~None
G1A04~What are the frequency limits for General class operators in the 30-meter band?~10100 - 10150 kHz~10100 - 10175 kHz~10125 - 10150 kHz~10125 - 10175 kHz~A~[97.301d]~None
G1A05~What are the frequency limits for General class operators in the 20-meter band?~14025 - 14100 kHz and 14175 - 14350 kHz~14025 - 14150 kHz and 14225 - 14350 kHz~14025 - 14125 kHz and 14200 - 14350 kHz~14025 - 14175 kHz and 14250 - 14350 kHz~B~[97.301d]~None
G1A06~What are the frequency limits for General class operators in the 15-meter band?~21025 - 21200 kHz and 21275 - 21450 kHz~21025 - 21150 kHz and 21300 - 21450 kHz~21025 - 21150 kHz and 21275 - 21450 kHz~21025 - 21200 kHz and 21300 - 21450 kHz~D~[97.301d]~None
G1A07~What are the frequency limits for General class operators in the 12-meter band?~24890 - 24990 kHz~24890 - 24975 kHz~24900 - 24990 kHz~24900 - 24975 kHz~A~[97.301d]~None
G1A08~What are the frequency limits for General class operators in the 10-meter band?~28000 - 29700 kHz~28025 - 29700 kHz~28100 - 29600 kHz~28125 - 29600 kHz~A~[97.301d]~None
G1A09~What are the frequency limits within the 160-meter band for phone emissions?~1800 - 2000 kHz~1800 - 1900 kHz~1825 - 2000 kHz~1825 - 1900 kHz~A~[97.305c]~None
G1A10~What are the frequency limits within the 80-meter band in ITU Region 2 for CW emissions?~3500 - 3750 kHz~3700 - 3750 kHz~3500 - 4000 kHz~3890 - 4000 kHz~C~[97.305a]~None
G1A11~What are the frequency limits within the 40-meter band in ITU Region 2 for image emissions?~7225 - 7300 kHz~7000 - 7150 kHz~7100 - 7150 kHz~7150 - 7300 kHz~D~[97.305c]~None
G1A12~What are the frequency limits within the 30-meter band for RTTY emissions?~10125 - 10150 kHz~10125 - 10140 kHz~10100 - 10150 kHz~10100 - 10140 kHz~C~[97.305c]~None
G1A13~What are the frequency limits within the 20-meter band for image emissions?~14025 - 14300 kHz~14150 - 14350 kHz~14025 - 14350 kHz~14150 - 14300 kHz~B~[97.305c]~None
G1A14~What are the frequency limits within the 15-meter band for image emissions?~21250 - 21300 kHz~21150 - 21450 kHz~21200 - 21450 kHz~21100 - 21300 kHz~C~[97.305c]~None
G1A15~What are the frequency limits within the 12-meter band for phone emissions?~24890 - 24990 kHz~24890 - 24930 kHz~24930 - 24990 kHz~Phone emissions are not permitted in this band~C~[97.305c]~None
G1A16~What are the frequency limits within the 10-meter band for phone emissions?~28000 - 28300 kHz~29000 - 29700 kHz~28300 - 29700 kHz~28000 - 29000 kHz~C~[97.305c]~None
G1A17~As a General class control operator at a Novice station, how must you identify your station when transmitting on 7250 kHz?~With your call sign, followed by the word "controlling" and the Novice call sign~With the Novice call sign, followed by the slant bar "/" (or any suitable word) and your own call sign~With your call sign, followed by the slant bar "/" (or any suitable word) and the Novice call sign~A Novice station should not be operated on 7250 kHz, even with a General control operator~B~[97.119d]~None
G1A18~Under what circumstances may a 10-meter repeater retransmit the 2-meter signal from a Technician class operator?~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 control operator holds at least a General class license~D~[97.205a]~None
G1A19~What kind of amateur station automatically retransmits the signals of other stations?~Repeater station~Space station~Telecommand station~Relay station~A~[97.3a35]~None
G1A20~What name is given to a form of interference that seriously degrades, obstructs or repeatedly interrupts a radiocommunication service?~Intentional interference~Harmful interference~Adjacent interference~Disruptive interference~B~[97.3a21]~None
G1A21~What types of messages may be transmitted by an amateur station to a foreign country for a third party?~Messages for which the amateur operator is paid~Messages facilitating the business affairs of any party~Messages of a technical nature or remarks of a personal character~No messages may be transmitted to foreign countries for third parties~C~[97.115, 97.117]~None
G1B01~Up to what height above the ground may you install an antenna structure without needing FCC approval?~50 feet~100 feet~200 feet~300 feet~C~[97.15a]~None
G1B02~If the FCC Rules DO NOT specifically cover a situation, how must you operate your amateur station?~In accordance with general licensee operator principles~In accordance with good engineering and good amateur practice~In accordance with practices adopted by the Institute of Electrical and Electronics Engineers~In accordance with procedures set forth by the International Amateur Radio Union~B~[97.101a]~None
G1B03~Which type of station may transmit one-way communications?~Repeater station~Beacon station~HF station~VHF station~B~[97.203g]~None
G1B04~Which of the following does NOT need to be true if an amateur station gathers news information for broadcast purposes?~The information is more quickly transmitted by amateur radio~The information must involve the immediate safety of life of individuals or the immediate protection of property~The information must be directly related to the event~The information cannot be transmitted by other means~A~[97.113c]~None
G1B05~Under what limited circumstances may music be transmitted by an amateur station?~When it produces no dissonances or spurious emissions~When it is used to jam an illegal transmission~When it is transmitted on frequencies above 1215 MHz~When it is an incidental part of a space shuttle retransmission~D~[97.113e]~None
G1B06~When may an amateur station in two-way communication transmit a message in a secret code in order to obscure the meaning of the communication?~When transmitting above 450 MHz~During contests~Never~During a declared communications emergency~C~[97.113d]~None
G1B07~What are the restrictions on the use of abbreviations or procedural signals in the amateur service?~There are no restrictions~They may be used if they do not obscure the meaning of a message~They are not permitted because they obscure the meaning of a message to FCC monitoring stations~Only "10-codes" are permitted~B~[97.113d]~None
G1B08~When are codes or ciphers permitted in two-way domestic amateur communications?~Never~During contests~During nationally declared emergencies~On frequencies above 2.3 GHz~A~[97.113d]~None
G1B09~When are codes or ciphers permitted in two-way international amateur communications?~Never~During contests~During internationally declared emergencies~On frequencies above 2.3 GHz~A~[97.113d]~None
G1B10~Which of the following amateur transmissions is NOT prohibited by the FCC Rules?~The playing of music~The use of obscene or indecent words~False or deceptive messages or signals~Retransmission of space shuttle communications~D~[97.113d]~None
G1B11~What should you do to keep your station from retransmitting music or signals from a non-amateur station?~Turn up the volume of your transceiver~Speak closer to the microphone to increase your signal strength~Turn down the volume of background audio~Adjust your transceiver noise blanker~C~[97.113d/e]~None
G1C01~What is the maximum transmitting power an amateur station may use on 3690 kHz?~200 watts PEP output~1000 watts PEP output~1500 watts PEP output~2000 watts PEP output~A~[97.313c1]~None
G1C02~What is the maximum transmitting power an amateur station may use on 7080 kHz?~200 watts PEP output~1000 watts PEP output~1500 watts PEP output~2000 watts PEP output~C~[97.313b]~None
G1C03~What is the maximum transmitting power an amateur station may use on 10.140 MHz?~200 watts PEP output~1000 watts PEP output~1500 watts PEP output~2000 watts PEP output~A~[97.313c1]~None
G1C04~What is the maximum transmitting power an amateur station may use on 21.150 MHz?~200 watts PEP output~1000 watts PEP output~1500 watts PEP output~2000 watts PEP output~A~[97.313c1]~None
G1C05~What is the maximum transmitting power an amateur station may use on 24.950 MHz?~200 watts PEP output~1000 watts PEP output~1500 watts PEP output~2000 watts PEP output~C~[97.313b]~None
G1C06~External RF power amplifiers designed to operate below what frequency may require FCC type acceptance?~28 MHz~35 MHz~50 MHz~144 MHz~D~[97.315a]~None
G1C07~Without a grant of FCC type acceptance, how many external RF amplifiers of a given design capable of operation below 144 MHz may you build or modify in one calendar year?~None~1~5~10~B~[97.315a]~None
G1C08~Which of the following standards must be met if FCC type acceptance of an external RF amplifier is required?~The amplifier must not be able to amplify a 28-MHz signal to more than ten times the input power~The amplifier must not be capable of reaching its designed output power when driven with less than 50 watts~The amplifier must not be able to be operated for more than ten minutes without a time delay circuit~The amplifier must not be able to be modified by an amateur operator~B~[97.317c6i]~None
G1C09~Which of the following would NOT disqualify an external RF power amplifier from being granted FCC type acceptance?~The capability of being modified by the operator for use outside the amateur bands~The capability of achieving full output power when driven with less than 50 watts~The capability of achieving full output power on amateur frequencies between 24 and 35 MHz~The capability of being switched by the operator to all amateur frequencies below 24 MHz~D~[97.317b/c]~None
G1C10~What is the maximum symbol rate permitted for packet emissions below 28 MHz?~300 bauds~1200 bauds~19.6 kilobauds~56 kilobauds~A~[97.307f3]~None
G1C11~What is the maximum symbol rate permitted for RTTY emissions below 28 MHz?~56 kilobauds~19.6 kilobauds~1200 bauds~300 bauds~D~[97.307f3]~None
G1D01~What telegraphy examination elements may you prepare if you hold a General class license?~None~Element 1A only~Element 1B only~Elements 1A and 1B~B~[97.507a2]~None
G1D02~What written examination elements may you prepare if you hold a General class license?~None~Element 2 only~Elements 2 and 3A~Elements 2, 3A and 3B~C~[97.507a2&3]~None
G1D03~What license examinations may you administer if you hold a General class license?~None~Novice only~Novice and Technician~Novice, Technician and General~C~[97.511b1]~None
G1D04~What minimum examination elements must an applicant pass for a Novice license?~Element 2 only~Elements 1A and 2~Elements 2 and 3A~Elements 1A, 2 and 3A~B~[97.501e]~None
G1D05~What minimum examination elements must an applicant pass for a Technician license?~Element 2 only~Elements 1A and 2~Elements 2 and 3A~Elements 1A, 2 and 3A~C~[97.501d]~None
G1D06~What minimum examination elements must an applicant pass for a Technician license with HF privileges?~Element 2 only~Elements 1A and 2~Elements 2 and 3A~Elements 1A, 2 and 3A~D~[97.301e/501d]~None
G1D07~What are the requirements for administering Novice examinations?~Three VEC-accredited General class or higher VEs must be present~Two VEC-accredited General class or higher VEs must be present~Two General class or higher VEs must be present, but only one need be VEC accredited~Any two General class or higher VEs must be present~A~[97.511a/b]~None
G1D08~When may you participate as an administering Volunteer Examiner (VE) for a Novice license examination?~Once you have notified the FCC that you want to give an examination~Once you have a Certificate of Successful Completion of Examination (CSCE) for General class~Once you have prepared telegraphy and written examinations for the Novice license, or obtained them from a qualified supplier~Once you have received both your FCC-issued General class or higher license in the mail and VEC accreditation~D~[97.507a]~None
G1D09~If you are a Technician licensee with a Certificate of Successful Completion of Examination (CSCE) for General privileges, how do you identify your station when transmitting on 14.035 MHz?~You must give your call sign and the location of the VE examination where you obtained the CSCE~You must give your call sign, followed by the slant mark "/", followed by the identifier "AG"~You may not operate on 14.035 MHz until your new license arrives~No special form of identification is needed~B~[97.119e2]~None
G1D10~If you are a Technician licensee with a Certificate of Successful Completion of Examination (CSCE) for General privileges, how do you identify your station when transmitting phone emissions on 14.325 MHz?~No special form of identification is needed~You may not operate on 14.325 MHz until your new license arrives~You must give your call sign, followed by any suitable word that denotes the slant mark and the identifier "AG"~You must give your call sign and the location of the VE examination where you obtained the CSCE~C~[97.119e2]~None
G1D11~If you are a Technician licensee with a Certificate of Successful Completion of Examination (CSCE) for General privileges, when must you add the special identifier "AG" after your call sign?~Whenever you operate using your new frequency privileges~Whenever you operate~Whenever you operate using Technician frequency privileges~A special identifier is not required as long as your General class license application has been filed with the FCC~A~[97.119e2]~None
G2A01~Which sideband is commonly used for 20-meter phone operation?~Upper~Lower~Amplitude compandored~Double~A~~None
G2A02~Which sideband is commonly used on 3925-kHz for phone operation?~Upper~Lower~Amplitude compandored~Double~B~~None
G2A03~In what segment of the 80-meter band do most RTTY transmissions take place?~3610 - 3630 kHz~3500 - 3525 kHz~3700 - 3750 kHz~3775 - 3825 kHz~A~~None
G2A04~In what segment of the 20-meter band do most RTTY transmissions take place?~14.000 - 14.050 MHz~14.075 - 14.100 MHz~14.150 - 14.225 MHz~14.275 - 14.350 MHz~B~~None
G2A05~What is the Baudot code?~A 7-bit code, with start, stop and parity bits~A 7-bit code in which each character has four mark and three space bits~A 5-bit code, with additional start and stop bits~A 6-bit code, with additional start, stop and parity bits~C~~None
G2A06~What is ASCII?~A 7-bit code, with additional start, stop and parity bits~A 7-bit code in which each character has four mark and three space bits~A 5-bit code, with additional start and stop bits~A 5-bit code in which each character has three mark and two space bits~A~~None
G2A07~What is the most common frequency shift for RTTY emissions in the amateur HF bands?~85 Hz~170 Hz~425 Hz~850 Hz~B~~None
G2A08~What are the two major AMTOR operating modes?~Mode AM and Mode TR~Mode A (ARQ) and Mode B (FEC)~Mode C (CRQ) and Mode D (DEC)~Mode SELCAL and Mode LISTEN~B~~None
G2A09~What is the usual input/output frequency separation for a 10-meter station in repeater operation?~100 kHz~600 kHz~1.6 MHz~170 Hz~A~~None
G2A10~What is the circuit called which causes a transmitter to automatically transmit when an operator speaks into its microphone?~VXO~VOX~VCO~VFO~B~~None
G2A11~Which of the following describes full break-in telegraphy?~Breaking stations send the Morse code prosign BK~Automatic keyers are used to send Morse code instead of hand keys~An operator must activate a manual send/receive switch before and after every transmission~Incoming signals are received between transmitted key pulses~D~~None
G2B01~If you are the net control station of a daily HF net, what should you do if the frequency on which you normally meet is in use just before the net begins?~Reduce your output power and start the net as usual~Increase your power output so that net participants will be able to hear you over the existing activity~Cancel the net for that day~Conduct the net on a frequency 3 to 5 kHz away from the regular net frequency~D~~None
G2B02~If a net is about to begin on a frequency which you and another station are using, what should you do?~As a courtesy to the net, move to a different frequency~Increase your power output to ensure that all net participants can hear you~Transmit as long as possible on the frequency so that no other stations may use it~Turn off your radio~A~~None
G2B03~If propagation changes during your contact and you notice increasing interference from other activity on the same frequency, what should you do?~Tell the interfering stations to change frequency, since you were there first~Report the interference to your local Amateur Auxiliary Coordinator~Turn on your amplifier to overcome the interference~Move your contact to another frequency~D~~None
G2B04~When selecting a CW transmitting frequency, what minimum frequency separation from a contact in progress should you allow to minimize interference?~5 to 50 Hz~150 to 500 Hz~1 to 3 kHz~3 to 6 kHz~B~~None
G2B05~When selecting a single-sideband phone transmitting frequency, what minimum frequency separation from a contact in progress should you allow (between suppressed carriers) to minimize interference?~150 to 500 Hz~Approximately 3 kHz~Approximately 6 kHz~Approximately 10 kHz~B~~None
G2B06~When selecting a RTTY transmitting frequency, what minimum frequency separation from a contact in progress should you allow (center to center) to minimize interference?~60 Hz~250 to 500 Hz~Approximately 3 kHz~Approximately 6 kHz~B~~None
G2B07~What is an azimuthal map?~A map projection centered on the North Pole~A map projection centered on a particular location, used to determine the shortest path between points on the surface of the earth~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~B~~None
G2B08~What is the most useful type of map to use when orienting a directional HF antenna toward a distant station?~Azimuthal~Mercator~Polar projection~Topographical~A~~None
G2B09~A directional antenna pointed in the long-path direction to another station is generally oriented how many degrees from its short-path heading?~45 degrees~90 degrees~180 degrees~270 degrees~C~~None
G2B10~What is a band plan?~A guideline for using different operating modes within an amateur band~A guideline for deviating from FCC amateur frequency band allocations~A plan of operating schedules within an amateur band published by the FCC~A plan devised by a club to best use a frequency band during a contest~A~~None
G2B11~In which International Telecommunication Union Region is the continental United States?~Region 1~Region 2~Region 3~Region 4~B~~None
G2C01~What means may an amateur station in distress use to attract attention, make known its condition and location, and obtain assistance?~Only Morse code signals sent on internationally recognized emergency channels~Any means of radiocommunication, but only on internationally recognized emergency channels~Any means of radiocommunication~Only those means of radiocommunication for which the station is licensed~C~~None
G2C02~During a disaster in the US, when may an amateur station make transmissions necessary to meet essential communication needs and assist relief operations?~When normal communication systems are overloaded, damaged or disrupted~Only when the local RACES net is activated~Never; only official emergency stations may transmit in a disaster~When normal communication systems are working but are not convenient~A~~None
G2C03~If a disaster disrupts normal communications in your area, what may the FCC do?~Declare a temporary state of communication emergency~Temporarily seize your equipment for use in disaster communications~Order all stations across the country to stop transmitting at once~Nothing until the President declares the area a disaster area~A~~None
G2C04~If a disaster disrupts normal communications in an area, what would the FCC include in any notice of a temporary state of communication emergency?~Any additional test questions needed for the licensing of amateur emergency communications workers~A list of organizations authorized to temporarily seize your equipment for disaster communications~Any special conditions requiring the use of non-commercial power systems~Any special conditions and special rules to be observed by stations during the emergency~D~~None
G2C05~During an emergency, what power output limitations must be observed by a station in distress?~200 watts PEP~1500 watts PEP~1000 watts PEP during daylight hours, reduced to 200 watts PEP during the night~There are no limitations during an emergency~D~~None
G2C06~During a disaster in the US, what frequencies may be used to obtain assistance?~Only frequencies in the 80-meter band~Only frequencies in the 40-meter band~Any frequency~Any United Nations approved frequency~C~~None
G2C07~If you are communicating with another amateur station and hear a station in distress break in, what should you do?~Continue your communication because you were on frequency first~Acknowledge the station in distress and determine its location and what assistance may be needed~Change to a different frequency so the station in distress may have a clear channel to call for assistance~Immediately cease all transmissions because stations in distress have emergency rights to the frequency~B~~None
G2C08~Why do stations in the Radio Amateur Civil Emergency Service (RACES) participate in training tests and drills?~To practice orderly and efficient operations for the civil defense organization they serve~To ensure that members attend monthly on-the-air meetings~To ensure that RACES members are able to conduct tests and drills~To acquaint members of RACES with other members they may meet in an emergency~A~~None
G2C09~What type of messages may be transmitted to an amateur station in a foreign country?~Messages of any type~Messages that are not religious, political, or patriotic in nature~Messages of a technical nature or personal remarks of relative unimportance~Messages of any type, but only if the foreign country has a third-party communications agreement with the US~C~~None
G2C10~What is the Amateur Auxiliary to the FCC's Field Operations Bureau?~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~A~~None
G2C11~What are the objectives of the Amateur Auxiliary to the FCC's Field Operations Bureau?~To conduct efficient and orderly amateur licensing examinations~To encourage amateur self-regulation and compliance with the rules~To coordinate repeaters for efficient and orderly spectrum usage~To provide emergency and public safety communications~B~~None
G3A01~What can be done at an amateur station to continue communications during a sudden ionospheric disturbance?~Try a higher frequency~Try the other sideband~Try a different antenna polarization~Try a different frequency shift~A~~None
G3A02~What effect does a sudden ionospheric disturbance have on the daylight ionospheric propagation of HF radio waves?~It disrupts higher-latitude paths more than lower-latitude paths~It disrupts signals on lower frequencies more than those on higher frequencies~It disrupts communications via satellite more than direct communications~None, only areas on the night side of the earth are affected~B~~None
G3A03~How long does it take the increased ultraviolet and X-ray radiation from solar flares to affect radio-wave propagation on the earth?~The effect is instantaneous~1.5 seconds~8 minutes~20 to 40 hours~C~~None
G3A04~What is solar flux?~The density of the sun's magnetic field~The radio energy emitted by the sun~The number of sunspots on the side of the sun facing the earth~A measure of the tilt of the earth's ionosphere on the side toward the sun~B~~None
G3A05~What is the solar-flux index?~A measure of solar activity that is taken annually~A measure of solar activity that compares daily readings with results from the last six months~Another name for the American sunspot number~A measure of solar activity that is taken at a specific frequency~D~~None
G3A06~What is a geomagnetic disturbance?~A sudden drop in the solar-flux index~A shifting of the earth's magnetic pole~Ripples in the ionosphere~A dramatic change in the earth's magnetic field over a short period of time~D~~None
G3A07~At which latitudes are propagation paths more sensitive to geomagnetic disturbances?~Those greater than 45 degrees latitude~Those between 5 and 45 degrees latitude~Those near the equator~All paths are affected equally~A~~None
G3A08~What can be the effect of a major geomagnetic storm on radio-wave propagation?~Improved high-latitude HF propagation~Degraded high-latitude HF propagation~Improved ground-wave propagation~Improved chances of UHF ducting~B~~None
G3A09~What influences all radio communication beyond ground-wave or line-of-sight ranges?~Solar activity~Lunar tidal effects~The F1 region of the ionosphere~The F2 region of the ionosphere~(~~None
G3A10~Which two types of radiation from the sun influence propagation?~Subaudible- and audio-frequency emissions~Electromagnetic and particle emissions~Polar-region and equatorial emissions~Infrared and gamma-ray emissions~B~~None
G3A11~When sunspot numbers are high, how is the ionosphere affected?~High-frequency radio signals are absorbed~Frequencies up to 100 MHz or higher are normally usable for long-distance communication~Frequencies up to 40 MHz or higher are normally usable for long-distance communication~High-frequency radio signals become weak and distorted~C~~None
G3B01~If the maximum usable frequency on the path from Minnesota to France is 22 MHz, which band should offer the best chance for a successful contact?~10 meters~15 meters~20 meters~40 Meters~B~~None
G3B02~If the maximum usable frequency on the path from Ohio to Germany is 17 MHz, which band should offer the best chance for a successful contact?~80 meters~40 meters~20 meters~2 meters~C~~None
G3B03~If the maximum usable frequency (MUF) is high and HF radio-wave propagation is generally good for several days, a similar condition can usually be expected how many days later?~7~14~28~90~C~~None
G3B04~What is one way to determine if the maximum usable frequency (MUF) is high enough to support 28-MHz propagation between your station and western Europe?~Listen for signals on the 10-meter beacon frequency~Listen for signals on the 20-meter beacon frequency~Listen for signals on the 39-meter broadcast frequency~Listen for WWVH time signals on 20 MHz~A~~None
G3B05~What usually happens to radio waves with frequencies below the maximum usable frequency (MUF) when they are sent into the ionosphere?~They are bent back to the earth~They pass through the ionosphere~They are completely absorbed by the ionosphere~They are changed to a frequency above the MUF~A~~None
G3B06~Where would you tune to hear beacons that would help you determine propagation conditions on the 20-meter band?~28.2 MHz~21.1 MHz~14.1 MHz~14.2 MHz~C~~None
G3B07~During periods of low solar activity, which frequencies are the least reliable for long-distance communication?~Frequencies below 3.5 MHz~Frequencies near 3.5 MHz~Frequencies on or above 10 MHz~Frequencies above 20 MHz~D~~None
G3B08~At what point in the solar cycle does the 20-meter band usually support worldwide propagation during daylight hours?~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~D~~None
G3B09~What is one characteristic of gray-line propagation?~It is very efficient~It improves local communications~It is very poor~It increases D-region absorption~A~~None
G3B10~What is the maximum distance along the earth's surface that is normally covered in one hop using the F2 region?~180 miles~1200 miles~2500 miles~None; the F2 region does not support radio-wave propagation~C~~None
G3B11~What is the maximum distance along the earth's surface that is normally covered in one hop using the E region?~180 miles~1200 miles~2500 miles~None; the E region does not support radio-wave propagation~B~~None
G3C01~What is the average height of maximum ionization of the E region?~45 miles~70 miles~200 miles~1200 miles~B~~None
G3C02~When can the F2 region be expected to reach its maximum height at your location?~At noon during the summer~At midnight during the summer~At dusk in the spring and fall~At noon during the winter~A~~None
G3C03~Why is the F2 region mainly responsible for the longest-distance radio-wave propagation?~Because it exists only at night~Because it is the lowest ionospheric region~Because it is the highest ionospheric region~Because it does not absorb radio waves as much as other ionospheric regions~C~~None
G3C04~What is the "critical angle" as used in radio-wave propagation?~The lowest takeoff angle that will return a radio wave to the earth under specific ionospheric conditions~The compass direction of a distant station~The compass direction opposite that of a distant station~The highest takeoff angle that will return a radio wave to the earth under specific ionospheric conditions~D~~None
G3C05~What is the main reason the 160-, 80- and 40-meter amateur bands tend to be useful only for short-distance communications during daylight hours?~Because of a lack of activity~Because of auroral propagation~Because of D-region absorption~Because of magnetic flux~C~~None
G3C06~What is a characteristic of HF scatter signals?~High intelligibility~A wavering sound~Reversed modulation~Reversed sidebands~B~~None
G3C07~What makes HF scatter signals often sound distorted?~Auroral activity and changes in the earth's magnetic field~Propagation through ground waves that absorb much of the signal~The state of the E-region at the point of refraction~Energy scattered into the skip zone through several radio-wave paths~D~~None
G3C08~Why are HF scatter signals usually weak?~Only a small part of the signal energy is scattered into the skip zone~Auroral activity absorbs most of the signal energy~Propagation through ground waves absorbs most of the signal energy~The F region of the ionosphere absorbs most of the signal energy~A~~None
G3C09~What type of radio-wave propagation allows a signal to be detected at a distance too far for ground-wave propagation but too near for normal sky-wave propagation?~Ground wave~Scatter~Sporadic-E skip~Short-path skip~B~~None
G3C10~When does scatter propagation on the HF bands most often occur?~When the sunspot cycle is at a minimum and D-region absorption is high~At night~When the F1 and F2 regions are combined~When communicating on frequencies above the maximum usable frequency (MUF)~D~~None
G3C11~What type of signal fading occurs when two or more parts of a radio wave follow different paths?~Multipath interference~Multimode interference~Selective Interference~Ionospheric interference~A~~None
G4A01~What kind of input signal is used to test the amplitude linearity of a single-sideband phone transmitter while viewing the output on an oscilloscope?~Normal speech~An audio-frequency sine wave~Two audio-frequency sine waves~An audio-frequency square wave~C~~None
G4A02~When testing the amplitude linearity of a single-sideband transmitter, what kind of audio tones are fed into the microphone input and on what kind of instrument is the output observed?~Two harmonically related tones are fed in, and the output is observed on an oscilloscope~Two harmonically related tones are fed in, and the output is observed on a distortion analyzer~Two non-harmonically related tones are fed in, and the output is observed on an oscilloscope~Two non-harmonically related tones are fed in, and the output is observed on a distortion analyzer~C~~None
G4A03~What audio frequencies are used in a two-tone test of the linearity of a single-sideband phone transmitter?~20 Hz and 20 kHz tones must be used~1200 Hz and 2400 Hz tones must be used~Any two audio tones may be used, but they must be within the transmitter audio passband, and must be harmonically related~Any two audio tones may be used, but they must be within the transmitter audio passband, and should not be harmonically related~D~~None
G4A04~What measurement can be made of a single-sideband phone transmitter's amplifier by performing a two-tone test using an oscilloscope?~Its percent of frequency modulation~Its percent of carrier phase shift~Its frequency deviation~Its linearity~D~~None
G4A05~At what point in an HF transceiver block diagram would an electronic TR switch normally appear?~Between the transmitter and low-pass filter~Between the low-pass filter and antenna~At the antenna feed point~At the power-supply feed point~A~~None
G4A06~Why is an electronic TR switch preferable to a mechanical one?~It allows greater receiver sensitivity~Its circuitry is simpler~It has a higher operating speed~It allows cleaner output signals~C~~None
G4A07~As a power amplifier is tuned, what reading on its grid-current meter indicates the best neutralization?~A minimum change in grid current as the output circuit is changed~A maximum change in grid current as the output circuit is changed~Minimum grid current~Maximum grid current~A~~None
G4A08~Why is neutralization necessary for some vacuum-tube amplifiers?~To reduce the limits of loaded Q~To reduce grid-to-cathode leakage~To cancel AC hum from the filament transformer~To cancel oscillation caused by the effects of interelectrode capacitance~D~~None
G4A09~In a properly neutralized RF amplifier, what type of feedback is used?~5%~10%~Negative~Positive~C~~None
G4A10~What does a neutralizing circuit do in an RF amplifier?~It controls differential gain~It cancels the effects of positive feedback~It eliminates AC hum from the power supply~It reduces incidental grid modulation~B~~None
G4A11~What is the reason for neutralizing the final amplifier stage of a transmitter?~To limit the modulation index~To eliminate self oscillations~To cut off the final amplifier during standby periods~To keep the carrier on frequency~B~~None
G4B01~What item of test equipment contains horizontal- and vertical-channel amplifiers?~An ohmmeter~A signal generator~An ammeter~An oscilloscope~D~~None
G4B02~How would a signal tracer normally be used?~To identify the source of radio transmissions~To make exact drawings of signal waveforms~To show standing wave patterns on open-wire feed lines~To identify an inoperative stage in a receiver~D~~None
G4B03~Why would you use an antenna noise bridge?~To measure the noise figure of an antenna or other electrical circuit~To measure the impedance of an antenna or other electrical circuit~To cancel electrical noise picked up by an antenna~To tune out noise in a receiver~B~~None
G4B04~How is an antenna noise bridge normally used?~It is connected at an antenna's feed point and reads the antenna's noise figure~It is connected between a transmitter and an antenna and is tuned for minimum SWR~It is connected between a receiver and an unknown impedance and is tuned for minimum noise~It is connected between an antenna and ground and is tuned for minimum SWR~C~~None
G4B05~What is the best instrument to use to check the signal quality of a CW or single-sideband phone transmitter?~A monitoring oscilloscope~A field-strength meter~A sidetone monitor~A signal tracer and an audio amplifier~A~~None
G4B06~What signal source is connected to the vertical input of a monitoring oscilloscope when checking the quality of a transmitted signal?~The IF output of a monitoring receiver~The audio input of the transmitter~The RF signals of a nearby receiving antenna~The RF output of the transmitter~D~~None
G4B07~What instrument can be used to determine the horizontal radiation pattern of an antenna?~A field-strength meter~A grid-dip meter~An oscilloscope~A signal tracer and an audio amplifier~A~~None
G4B08~How is a field-strength meter normally used?~To determine the standing-wave ratio on a transmission line~To check the output modulation of a transmitter~To monitor relative RF output~To increase average transmitter output~C~~None
G4B09~What simple instrument may be used to monitor relative RF output during antenna and transmitter adjustments?~A field-strength meter~An antenna noise bridge~A multimeter~A metronome~A~~None
G4B10~If the power output of a transmitter is increased by four times, how might a nearby receiver's S-meter reading change?~Decrease by approximately one S unit~Increase by approximately one S unit~Increase by approximately four S units~Decrease by approximately four S units~B~~None
G4B11~By how many times must the power output of a transmitter be increased to raise the S-meter reading on a nearby receiver from S8 to S9?~Approximately 2 times~Approximately 3 times~Approximately 4 times~Approximately 5 times~C~~None
G4C01~What devices would you install to reduce or eliminate audio-frequency interference to home-entertainment systems?~Bypass inductors~Bypass capacitors~Metal-oxide varistors~Bypass resistors~B~~None
G4C02~What should be done if a properly operating amateur station is the cause of interference to a nearby telephone?~Make internal adjustments to the telephone equipment~Ask the telephone company to install RFI filters~Stop transmitting whenever the telephone is in use~Ground and shield the local telephone distribution amplifier~B~~None
G4C03~What sound is heard from a public-address system if audio rectification of a nearby single-sideband phone transmission occurs?~A steady hum whenever the transmitter's carrier is on the air~On-and-off humming or clicking~Distorted speech from the transmitter's signals~Clearly audible speech from the transmitter's signals~C~~None
G4C04~What sound is heard from a public-address system if audio rectification of a nearby CW transmission occurs?~On-and-off humming or clicking~Audible, possibly distorted speech~Muffled, severely distorted speech~A steady whistling~A~~None
G4C05~How can you minimize the possibility of audio rectification of your transmitter's signals?~By using a solid-state transmitter~By using CW emission only~By ensuring that all station equipment is properly grounded~By installing bypass capacitors on all power supply rectifiers~C~~None
G4C06~If your third-floor amateur station has a ground wire running 33 feet down to a ground rod, why might you get an RF burn if you touch the front panel of your HF transceiver?~Because the ground rod is not making good contact with moist earth~Because the transceiver's heat-sensing circuit is not working to start the cooling fan~Because of a bad antenna connection, allowing the RF energy to take an easier path out of the transceiver through you~Because the ground wire is a resonant length on several HF bands and acts more like an antenna than an RF ground connection~D~~None
G4C07~What is NOT an important reason to have a good station ground?~To reduce the cost of operating a station~To reduce electrical noise~To reduce interference~To reduce the possibility of electric shock~A~~None
G4C08~What is one good way to avoid stray RF energy in your amateur station?~Keep the station's ground wire as short as possible~Use a beryllium ground wire for best conductivity~Drive the ground rod at least 14 feet into the ground~Make a couple of loops in the ground wire where it connects to your station~A~~None
G4C09~Which statement about station grounding is NOT true?~Braid from RG-213 coaxial cable makes a good conductor to tie station equipment together into a station ground~Only transceivers and power amplifiers need to be tied into a station ground~According to the National Electrical Code, there should be only one grounding system in a building~The minimum length for a good ground rod is 8 feet~B~~None
G4C10~Which statement about station grounding is true?~The chassis of each piece of station equipment should be tied together with high-impedance conductors~If the chassis of all station equipment is connected with a good conductor, there is no need to tie them to an earth ground~RF hot spots can occur in a station located above the ground floor if the equipment is grounded by a long ground wire~A ground loop is an effective way to ground station equipment~C~~None
G4C11~Which of the following is NOT covered in the National Electrical Code?~Minimum conductor sizes for different lengths of amateur antennas~The size and composition of grounding conductors~Electrical safety inside the ham shack~The RF exposure limits of the human body~D~~None
G4D01~What is the reason for using a properly adjusted speech processor with a single-sideband phone transmitter?~It reduces average transmitter power requirements~It reduces unwanted noise pickup from the microphone~It improves voice frequency fidelity~It improves signal intelligibility at the receiver~D~~None
G4D02~If a single-sideband phone transmitter is 100% modulated, what will a speech processor do to the transmitter's power?~It will increase the output PEP~It will add nothing to the output PEP~It will decrease the peak power output~It will decrease the average power output~B~~None
G4D03~How is the output PEP of a transmitter calculated if an oscilloscope is used to measure the transmitter's peak load voltage across a resistive load?~PEP = [(Vp)(Vp)] / (RL)~PEP = [(0.707 PEV)(0.707 PEV)] / RL~PEP = (Vp)(Vp)(RL)~PEP = [(1.414 PEV)(1.414 PEV)] / RL~B~~None
G4D04~What is the output PEP from a transmitter if an oscilloscope measures 200 volts peak-to-peak across a 50-ohm resistor connected to the transmitter output?~100 watts~200 watts~400 watts~1000 watts~A~~None
G4D05~What is the output PEP from a transmitter if an oscilloscope measures 500 volts peak-to-peak across a 50-ohm resistor connected to the transmitter output?~500 watts~625 watts~1250 watts~2500 watts~B~~None
G4D06~What is the output PEP of an unmodulated carrier transmitter if an average-reading wattmeter connected to the transmitter output indicates 1060 watts?~530 watts~1060 watts~1500 watts~2120 watts~B~~None
G4D07~Which wires in a four-conductor line cord should be attached to fuses in a 240-VAC primary (single phase) power supply?~Only the "hot" (black and red) wires~Only the "neutral" (white) wire~Only the ground (bare) wire~All wires~A~~None
G4D08~What size wire is normally used on a 15-ampere, 120-VAC household lighting circuit?~AWG number 14~AWG number 16~AWG number 18~AWG number 22~A~~None
G4D09~What size wire is normally used on a 20-ampere, 120-VAC household appliance circuit?~AWG number 20~AWG number 16~AWG number 14~AWG number 12~D~~None
G4D10~What maximum size fuse or circuit breaker should be used in a household appliance circuit using AWG number 12 wiring?~100 amperes~60 amperes~30 amperes~20 amperes~D~~None
G4D11~What maximum size fuse or circuit breaker should be used in a household appliance circuit using AWG number 14 wiring?~15 amperes~20 amperes~30 amperes~60 amperes~A~~None
G4E01~Depending on the wavelength of the signal, the energy density of the RF field, and other factors, in what way can RF energy affect body tissue?~It heats the tissue~It causes radiation poisoning~It causes blood flow to stop~It produces genetic changes in the tissue~A~~None
G4E02~If you operate your amateur station with indoor antennas, what precautions should you take when you install them?~Locate the antennas close to your operating position to minimize feed-line length~Position the antennas along the edge of a wall where it meets the floor or ceiling to reduce parasitic radiation~Locate the antennas as far away as possible from living spaces that will be occupied while you are operating~Position the antennas parallel to electrical power wires to take advantage of parasitic effects~C~~None
G4E03~What precaution should you take whenever you make adjustments to the feed system of a parabolic dish antenna?~Be sure no one can activate the transmitter~Disconnect the antenna-positioning mechanism~Point the dish away from the sun so it doesn't concentrate solar energy on you~Be sure you and the antenna structure are properly grounded~A~~None
G4E04~What is one important thing to consider when using an indoor antenna?~Use stranded wire to reduce stray RF~Ensure that the antenna is as far away from people as possible~Use only a Yagi antenna to direct the signals away from people~Use as much power as possible to ensure that your signal gets out~B~~None
G4E05~Why should a protective fence be placed around the base of a ground-mounted parabolic dish transmitting antenna?~To reduce the possibility of persons being harmed by RF energy during transmissions~To reduce the possibility that animals will damage the antenna~To increase the property value through increased security awareness~To protect the antenna from lightning damage and provide a good ground system for the installation~A~~None
G4E06~What RF-safety precautions should you take before beginning repairs on an antenna?~Be sure you and the antenna structure are grounded~Be sure to turn off the transmitter and disconnect the feed line~Inform your neighbors so they are aware of your intentions~Turn off the main power switch in your house~B~~None
G4E07~What precaution should you take when installing a ground-mounted antenna?~It should not be installed higher than you can reach~It should not be installed in a wet area~It should be painted so people or animals do not accidentally run into it~It should be installed so no one can come in contact with it~D~~None
G4E08~What precautions should you take before beginning repairs on a microwave feed horn or waveguide?~Be sure to wear tight-fitting clothes and gloves to protect your body and hands from sharp edges~Be sure the transmitter is turned off and the power source is disconnected~Be sure the weather is dry and sunny~Be sure propagation conditions are unfavorable for tropospheric ducting~B~~None
G4E09~Why should directional high-gain antennas be mounted higher than nearby structures?~So they will be dried by the wind after a heavy rain storm~So they will not damage nearby structures with RF energy~So they will receive more sky waves and fewer ground waves~So they will not direct RF energy toward people in nearby structures~D~~None
G4E10~For best RF safety, where should the ends and center of a dipole antenna be located?~Near or over moist ground so RF energy will be radiated away from the ground~As close to the transmitter as possible so RF energy will be concentrated near the transmitter~As high as possible to prevent people from coming in contact with the antenna~Close to the ground so simple adjustments can be easily made without climbing a ladder~C~~None
G4E11~Which property of RF energy is NOT important in estimating the energy's effect on body tissue?~The polarization~The critical angle~The power density~The frequency~B~~None
G5A01~What is impedance?~The electric charge stored by a capacitor~The opposition to the flow of AC in a circuit containing only capacitance~The opposition to the flow of AC in a circuit~The force of repulsion between one electric field and another with the same charge~C~~None
G5A02~What is reactance?~Opposition to DC caused by resistors~Opposition to AC caused by inductors and capacitors~A property of ideal resistors in AC circuits~A large spark produced at switch contacts when an inductor is de-energized~B~~None
G5A03~In an inductor, what causes opposition to the flow of AC?~Resistance~Reluctance~Admittance~Reactance~D~~None
G5A04~In a capacitor, what causes opposition to the flow of AC?~Resistance~Reluctance~Reactance~Admittance~C~~None
G5A05~How does a coil react to AC?~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~D~~None
G5A06~How does a capacitor react to AC?~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~A~~None
G5A07~When will a power source deliver maximum output to the load?~When the impedance of the load is equal to the impedance of the source~When the load resistance is infinite~When the power-supply fuse rating equals the primary winding current~When air wound transformers are used instead of iron-core transformers~A~~None
G5A08~What happens when the impedance of an electrical load is equal to the internal impedance of the power source?~The source delivers minimum power to the load~The electrical load is shorted~No current can flow through the circuit~The source delivers maximum power to the load~D~~None
G5A09~Why is impedance matching important?~So the source can deliver maximum power to the load~So the load will draw minimum power from the source~To ensure that there is less resistance than reactance in the circuit~To ensure that the resistance and reactance in the circuit are equal~A~~None
G5A10~What unit is used to measure reactance?~Mho~Ohm~Ampere~Siemens~B~~None
G5A11~What unit is used to measure impedance?~Volt~Ohm~Ampere~Watt~B~~None
G5B01~A two-times increase in power results in a change of how many dB?~1 dB higher~3 dB higher~6 dB higher~12 dB higher~B~~None
G5B02~How can you decrease your transmitter's power by 3 dB?~Divide the original power by 1.5~Divide the original power by 2~Divide the original power by 3~Divide the original power by 4~B~~None
G5B03~How can you increase your transmitter's power by 6 dB?~Multiply the original power by 1.5~Multiply the original power by 2~Multiply the original power by 3~Multiply the original power by 4~(~~None
G5B04~If a signal-strength report is "10 dB over S9", what should the report be if the transmitter power is reduced from 1500 watts to 150 watts?~S5~S7~S9~S9 plus 5 dB~C~~None
G5B05~If a signal-strength report is "20 dB over S9", what should the report be if the transmitter power is reduced from 1500 watts to 15 watts?~S5~S7~S9~S9 plus 10 dB~C~~None
G5B06~If a 1.0-ampere current source is connected to two parallel-connected 10-ohm resistors, how much current passes through each resistor?~10 amperes~2 amperes~1 ampere~0.5 ampere~D~~None
G5B07~In a parallel circuit with a voltage source and several branch resistors, how is the total current related to the current in the branch resistors?~It equals the average of the branch current through each resistor~It equals the sum of the branch current through each resistor~It decreases as more parallel resistors are added to the circuit~It is the sum of each resistor's voltage drop multiplied by the total number of resistors~B~~None
G5B08~How many watts of electrical power are used if 400 VDC is supplied to an 800-ohm load?~0.5 watts~200 watts~400 watts~320,000 watts~B~~None
G5B09~How many watts of electrical power are used by a 12-VDC light bulb that draws 0.2 amperes?~60 watts~24 watts~6 watts~2.4 watts~D~~None
G5B10~How many watts are being dissipated when 7.0 milliamperes flow through 1.25 kilohms?~Approximately 61 milliwatts~Approximately 39 milliwatts~Approximately 11 milliwatts~Approximately 9 milliwatts~(~~None
G5B11~What is the voltage across a 500-turn secondary winding in a transformer if the 2250-turn primary is connected to 120 VAC?~2370 volts~540 volts~26.7 volts~5.9 volts~C~~None
G5B12~What is the turns ratio of a transformer to match an audio amplifier having a 600-ohm output impedance to a speaker having a 4-ohm impedance?~12.2 to 1~24.4 to 1~150 to 1~300 to 1~A~~None
G5B13~What is the impedance of a speaker that requires a transformer with a turns ratio of 24 to 1 to match an audio amplifier having an output impedance of 2000 ohms?~576 ohms~83.3 ohms~7.0 ohms~3.5 ohms~D~~None
G5B14~A DC voltage equal to what value of an applied sine-wave AC voltage would produce the same amount of heat over time in a resistive element?~The peak-to-peak value~The RMS value~The average value~The peak value~B~~None
G5B15~What is the peak-to-peak voltage of a sine wave that has an RMS voltage of 120 volts?~84.8 volts~169.7 volts~204.8 volts~339.4 volts~D~~None
G5B16~A sine wave of 17 volts peak is equivalent to how many volts RMS?~8.5 volts~12 volts~24 volts~34 volts~B~~None
G6A01~If a carbon resistor's temperature is increased, what will happen to the resistance?~It will increase by 20% for every 10 degrees centigrade~It will stay the same~It will change depending on the resistor's temperature coefficient rating~It will become time dependent~C~~None
G6A02~What type of capacitor is often used in power-supply circuits to filter the rectified AC?~Disc ceramic~Vacuum variable~Mica~Electrolytic~D~~None
G6A03~What type of capacitor is used in power-supply circuits to filter transient voltage spikes across the transformer's secondary winding?~High-value~Trimmer~Vacuum variable~Suppressor~D~~None
G6A04~Where is the source of energy connected in a transformer?~To the secondary winding~To the primary winding~To the core~To the plates~B~~None
G6A05~If no load is attached to the secondary winding of a transformer, what is current in the primary winding called?~Magnetizing current~Direct current~Excitation current~Stabilizing current~A~~None
G6A06~What is the peak-inverse-voltage rating of a power-supply rectifier?~The maximum transient voltage the rectifier will handle in the conducting direction~1.4 times the AC frequency~The maximum voltage the rectifier will handle in the non-conducting direction~2.8 times the AC frequency~C~~None
G6A07~What are the two major ratings that must not be exceeded for silicon-diode rectifiers used in power-supply circuits?~Peak inverse voltage; average forward current~Average power; average voltage~Capacitive reactance; avalanche voltage~Peak load impedance; peak voltage~A~~None
G6A08~Why should a resistor and capacitor be wired in parallel with power-supply rectifier diodes?~To equalize voltage drops and guard against transient voltage spikes~To ensure that the current through each diode is about the same~To smooth the output waveform~To decrease the output voltage~A~~None
G6A09~What is the output waveform of an unfiltered full-wave rectifier connected to a resistive load?~A series of pulses at twice the frequency of the AC input~A series of pulses at the same frequency as the AC input~A sine wave at half the frequency of the AC input~A steady DC voltage~A~~None
G6A10~A half-wave rectifier conducts during how many degrees of each cycle?~90 degrees~180 degrees~270 degrees~360 degrees~B~~None
G6A11~A full-wave rectifier conducts during how many degrees of each cycle?~90 degrees~180 degrees~270 degrees~360 degrees~D~~None
G7A01~What safety feature does a power-supply bleeder resistor provide?~It improves voltage regulation~It discharges the filter capacitors~It removes shock hazards from the induction coils~It eliminates ground-loop current~B~~None
G7A02~Where is a power-supply bleeder resistor connected?~Across the filter capacitor~Across the power-supply input~Between the transformer primary and secondary windings~Across the inductor in the output filter~A~~None
G7A03~What components are used in a power-supply filter network?~Diodes~Transformers and transistors~Quartz crystals~Capacitors and inductors~D~~None
G7A04~What should be the peak-inverse-voltage rating of the rectifier in a full-wave power supply?~One-quarter the normal output voltage of the power supply~Half the normal output voltage of the power supply~Equal to the normal output voltage of the power supply~Double the normal peak output voltage of the power supply~D~~None
G7A05~What should be the peak-inverse-voltage rating of the rectifier in a half-wave power supply?~One-quarter to one-half the normal peak output voltage of the power supply~Half the normal output voltage of the power supply~Equal to the normal output voltage of the power supply~One to two times the normal peak output voltage of the power supply~D~~None
G7A06~What should be the impedance of a low-pass filter as compared to the impedance of the transmission line into which it is inserted?~Substantially higher~About the same~Substantially lower~Twice the transmission line impedance~B~~None
G7A07~In a typical single-sideband phone transmitter, what circuit processes signals from the balanced modulator and sends signals to the mixer?~Carrier oscillator~Filter~IF amplifier~RF amplifier~B~~None
G7A08~In a single-sideband phone transmitter, what circuit processes signals from the carrier oscillator and the speech amplifier and sends signals to the filter?~Mixer~Detector~IF amplifier~Balanced modulator~D~~None
G7A09~In a single-sideband phone superheterodyne receiver, what circuit processes signals from the RF amplifier and the local oscillator and sends signals to the IF filter?~Balanced modulator~IF amplifier~Mixer~Detector~C~~None
G7A10~In a single-sideband phone superheterodyne receiver, what circuit processes signals from the IF amplifier and the BFO and sends signals to the AF amplifier?~RF oscillator~IF filter~Balanced modulator~Detector~D~~None
G7A11~In a single-sideband phone superheterodyne receiver, what circuit processes signals from the IF filter and sends signals to the detector?~RF oscillator~IF amplifier~Mixer~BFO~B~~None
G8A01~What type of modulation system changes the amplitude of an RF wave for the purpose of conveying information?~Frequency modulation~Phase modulation~Amplitude-rectification modulation~Amplitude modulation~D~~None
G8A02~What type of modulation system changes the phase of an RF wave for the purpose of conveying information?~Pulse modulation~Phase modulation~Phase-rectification modulation~Amplitude modulation~B~~None
G8A03~What type of modulation system changes the frequency of an RF wave for the purpose of conveying information?~Phase-rectification modulation~Frequency-rectification modulation~Amplitude modulation~Frequency modulation~D~~None
G8A04~What emission is produced by a reactance modulator connected to an RF power amplifier?~Multiplex modulation~Phase modulation~Amplitude modulation~Pulse modulation~B~~None
G8A05~what emission type does the instantaneous amplitude (envelope) of the RF signal vary in accordance with the modulating audio?~Frequency shift keying~Pulse modulation~Frequency modulation~Amplitude modulation~D~~None
G8A06~How much is the carrier suppressed below peak output power in a single-sideband phone transmission?~No more than 20 dB~No more than 30 dB~At least 40 dB~At least 60 dB~C~~None
G8A07~What is one advantage of carrier suppression in a double-sideband phone transmission?~Only half the bandwidth is required for the same information content~Greater modulation percentage is obtainable with lower distortion~More power can be put into the sidebands~Simpler equipment can be used to receive a double-sideband suppressed-carrier signal~C~~None
G8A08~Which popular phone emission uses the narrowest frequency bandwidth?~Single-sideband~Double-sideband~Phase-modulated~Frequency-modulated~A~~None
G8A09~What happens to the signal of an overmodulated single-sideband or double-sideband phone transmitter?~It becomes louder with no other effects~It occupies less bandwidth with poor high-frequency response~It has higher fidelity and improved signal-to-noise ratio~It becomes distorted and occupies more bandwidth~D~~None
G8A10~How should the microphone gain control be adjusted on a single-sideband phone transmitter?~For full deflection of the ALC meter on modulation peaks~For slight movement of the ALC meter on modulation peaks~For 100% frequency deviation on modulation peaks~For a dip in plate current~B~~None
G8A11~What is meant by flattopping in a single-sideband phone transmission?~Signal distortion caused by insufficient collector current~The transmitter's automatic level control is properly adjusted~Signal distortion caused by excessive drive~The transmitter's carrier is properly suppressed~C~~None
G8B01~What receiver stage combines a 14.25-MHz input signal with a 13.795-MHz oscillator signal to produce a 455-kHz intermediate frequency (IF) signal?~Mixer~BFO~VFO~Multiplier~A~~None
G8B02~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?~Local oscillator~Image response~Mixer interference~Intermediate interference~B~~None
G8B03~What stage in a transmitter would change a 5.3-MHz input signal to 14.3 MHz?~A mixer~A beat frequency oscillator~A frequency multiplier~A linear translator~A~~None
G8B04~What is the name of the stage in a VHF FM transmitter that selects a harmonic of an HF signal to reach the desired operating frequency?~Mixer~Reactance modulator~Preemphasis network~Multiplier~D~~None
G8B05~Why isn't frequency modulated (FM) phone used below 29.5 MHz?~The transmitter efficiency for this mode is low~Harmonics could not be attenuated to practical levels~The bandwidth would exceed FCC limits~The frequency stability would not be adequate~C~~None
G8B06~What is the total bandwidth of an FM-phone transmission having a 5-kHz deviation and a 3-kHz modulating frequency?~3 kHz~5 kHz~8 kHz~16 kHz~D~~None
G8B07~What is the frequency deviation for a 12.21-MHz reactance-modulated oscillator in a 5-kHz deviation, 146.52-MHz FM-phone transmitter?~41.67 Hz~416.7 Hz~5 kHz~12 kHz~B~~None
G8B08~How is frequency shift related to keying speed in an FSK signal?~The frequency shift in hertz must be at least four times the keying speed in WPM~The frequency shift must not exceed 15 Hz per WPM of keying speed~Greater keying speeds require greater frequency shifts~Greater keying speeds require smaller frequency shifts~C~~None
G8B09~What do RTTY, Morse code, AMTOR and packet communications have in common?~They are multipath communications~They are digital communications~They are analog communications~They are only for emergency communications~B~~None
G8B10~What is the duty cycle required of a transmitter when sending Mode B (FEC) AMTOR?~50%~75%~100%~125%~C~~None
G8B11~In what segment of the 20-meter band are most AMTOR operations found?~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~At the bottom of the RTTY segment, near 14.075 MHz~D~~None
G9A01~How can the SWR bandwidth of a parasitic beam antenna be increased?~Use larger diameter elements~Use closer element spacing~Use traps on the elements~Use tapered-diameter elements~A~~None
G9A02~Approximately how long is the driven element of a Yagi antenna for 14.0 MHz?~17 feet~33 feet~35 feet~66 feet~B~~None
G9A03~Approximately how long is the director element of a Yagi antenna for 21.1 MHz?~42 feet~21 feet~17 feet~10.5 feet~B~~None
G9A04~Approximately how long is the reflector element of a Yagi antenna for 28.1 MHz?~8.75 feet~16.6 feet~17.5 feet~35 feet~C~~None
G9A05~Which statement about a three-element Yagi antenna is true?~The reflector is normally the shortest parasitic element~The director is normally the shortest parasitic element~The driven element is the longest parasitic element~Low feed-point impedance increases bandwidth~B~~None
G9A06~What is one effect of increasing the boom length and adding directors to a Yagi antenna?~Gain increases~SWR increases~Weight decreases~Windload decreases~A~~None
G9A07~What are some advantages of a Yagi with wide element spacing?~High gain, lower loss and a low SWR~High front-to-back ratio and lower input resistance~Shorter boom length, lower weight and wind resistance~High gain, less critical tuning and wider bandwidth~D~~None
G9A08~Why is a Yagi antenna often used for radio communications on the 20-meter band?~It provides excellent omnidirectional coverage in the horizontal plane~It is smaller, less expensive and easier to erect than a dipole or vertical antenna~It helps reduce interference from other stations off to the side or behind~It provides the highest possible angle of radiation for the HF bands~C~~None
G9A09~What does "antenna front-to-back ratio" mean in reference to a Yagi antenna?~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 the power radiated in exactly the opposite direction~The power radiated in the major radiation lobe compared to the power radiated 90 degrees away from that direction~C~~None
G9A10~What is the "main lobe" of a Yagi antenna radiation pattern?~The direction of least radiation from the antenna~The point of maximum current in a radiating antenna element~The direction of maximum radiated field strength from the antenna~The maximum voltage standing wave point on a radiating element~C~~None
G9A11~What is a good way to get maximum performance from a Yagi antenna?~Optimize the lengths and spacing of the elements~Use RG-58 feed line~Use a reactance bridge to measure the antenna performance from each direction around the antenna~Avoid using towers higher than 30 feet above the ground~(~~None
G9B01~Approximately how long is each side of a cubical-quad antenna driven element for 21.4 MHz?~1.17 feet~11.7 feet~47 feet~469 feet~B~~None
G9B02~Approximately how long is each side of a cubical-quad antenna driven element for 14.3 MHz?~17.6 feet~23.4 feet~70.3 feet~175 feet~A~~None
G9B03~Approximately how long is each side of a cubical-quad antenna reflector element for 29.6 MHz?~8.23 feet~8.7 feet~9.7 feet~34.8 feet~B~~None
G9B04~Approximately how long is each leg of a symmetrical delta-loop antenna driven element for 28.7 MHz?~8.75 feet~11.7 feet~23.4 feet~35 feet~B~~None
G9B05~Approximately how long is each leg of a symmetrical delta-loop antenna driven element for 24.9 MHz?~10.99 feet~12.95 feet~13.45 feet~40.36 feet~C~~None
G9B06~Approximately how long is each leg of a symmetrical delta-loop antenna reflector element for 14.1 MHz?~18.26 feet~23.76 feet~24.35 feet~73.05 feet~C~~None
G9B07~Which statement about two-element delta loops and quad antennas is true?~They compare favorably with a three-element Yagi~They perform poorly above HF~They perform very well only at HF~They are effective only when constructed using insulated wire~A~~None
G9B08~Compared to a dipole antenna, what are the directional radiation characteristics of a cubical-quad antenna?~The quad has more directivity in the horizontal plane but less directivity in the vertical plane~The quad has less directivity in the horizontal plane but more directivity in the vertical plane~The quad has more directivity in both horizontal and vertical planes~The quad has less directivity in both horizontal and vertical planes~C~~None
G9B09~Moving the feed point of a multielement quad antenna from a side parallel to the ground to a side perpendicular to the ground will have what effect?~It will significantly increase the antenna feed-point impedance~It will significantly decrease the antenna feed-point impedance~It will change the antenna polarization from vertical to horizontal~It will change the antenna polarization from horizontal to vertical~D~~None
G9B10~What does the term "antenna front-to-back ratio" mean in reference to a delta-loop antenna?~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 the power radiated in exactly the opposite direction~The power radiated in the major radiation lobe compared to the power radiated 90 degrees away from that direction~C~~None
G9B11~What is the "main lobe" of a delta-loop antenna radiation pattern?~The direction of least radiation from an antenna~The point of maximum current in a radiating antenna element~The direction of maximum radiated field strength from the antenna~The maximum voltage standing wave point on a radiating element~C~~None
G9C01~What type of multiband transmitting antenna does NOT require a feed line?~A random-wire antenna~A triband Yagi antenna~A delta-loop antenna~A Beverage antenna~A~~None
G9C02~What is one advantage of using a random-wire antenna?~It is more efficient than any other kind of antenna~It will keep RF energy out of your station~It doesn't need an impedance matching network~It is a multiband antenna~D~~None
G9C03~What is one disadvantage of a random-wire antenna?~It must be longer than 1 wavelength~You may experience RF feedback in your station~It usually produces vertically polarized radiation~You must use an inverted-T matching network for multiband operation~B~~None
G9C04~What is an advantage of downward sloping radials on a ground-plane antenna?~It lowers the radiation angle~It brings the feed-point impedance closer to 300 ohms~It increases the radiation angle~It brings the feed-point impedance closer to 50 ohms~D~~None
G9C05~What happens to the feed-point impedance of a ground-plane antenna when its radials are changed from horizontal to downward- sloping?~It decreases~It increases~It stays the same~It approaches zero~B~~None
G9C06~What is the low-angle radiation pattern of an ideal half-wavelength dipole HF antenna installed parallel to the earth?~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 is two smaller lobes on one side of the antenna, and one larger lobe on the other side~A~~None
G9C07~How does antenna height affect the horizontal (azimuthal) radiation pattern of a horizontal dipole HF antenna?~If the antenna is too high, the pattern becomes unpredictable~If the antenna is less than one-half wavelength high, reflected radio waves from the ground significantly distort the pattern~Antenna height has no effect on the pattern~If the antenna is less than one-half wavelength high, radiation off the ends of the wire is eliminated~B~~None
G9C08~If a slightly shorter parasitic element is placed 0.1 wavelength away from an HF dipole antenna, what effect will this have on the antenna's radiation pattern?~The radiation pattern will not be affected~A major lobe will develop in the horizontal plane, parallel to the two elements~A major lobe will develop in the vertical plane, away from the ground~A major lobe will develop in the horizontal plane, toward the parasitic element~D~~None
G9C09~If a slightly longer parasitic element is placed 0.1 wavelength away from an HF dipole antenna, what effect will this have on the antenna's radiation pattern?~The radiation pattern will not be affected~A major lobe will develop in the horizontal plane, away from the parasitic element, toward the dipole~A major lobe will develop in the vertical plane, away from the ground~A major lobe will develop in the horizontal plane, parallel to the two elements~B~~None
G9C10~Where should the radial wires of a ground-mounted vertical antenna system be placed?~As high as possible above the ground~On the surface or buried a few inches below the ground~Parallel to the antenna element~At the top of the antenna~B~~None
G9C11~If you are transmitting from a ground-mounted vertical antenna, which of the following is an important reason for people to stay away from it?~To avoid skewing the radiation pattern~To avoid changes to the antenna feed-point impedance~To avoid excessive grid current~To avoid exposure to RF radiation~D~~None
G9D01~What factors determine the characteristic impedance of a parallel-conductor antenna feed line?~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~A~~None
G9D02~What is the typical characteristic impedance of coaxial cables used for antenna feed lines at amateur stations?~25 and 30 ohms~50 and 75 ohms~80 and 100 ohms~500 and 750 ohms~B~~None
G9D03~What is the characteristic impedance of flat-ribbon TV-type twinlead?~50 ohms~75 ohms~100 ohms~300 ohms~D~~None
G9D04~What is the typical cause of power being reflected back down an antenna feed line?~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~C~~None
G9D05~What must be done to prevent standing waves of voltage and current on an antenna feed line?~The antenna feed point must be at DC ground potential~The feed line must be cut to an odd number of electrical quarter-wavelengths long~The feed line must be cut to an even number of physical half- wavelengths long~The antenna feed-point impedance must be matched to the characteristic impedance of the feed line~D~~None
G9D06~If a center-fed dipole antenna is fed by parallel-conductor feed line, how would an inductively coupled matching network be used between the two?~It would not normally be used with parallel-conductor feed lines~It would be used to increase the SWR to an acceptable level~It would be used to match the unbalanced transmitter output to the balanced parallel-conductor feed line~It would be used at the antenna feed point to tune out the radiation resistance~C~~None
G9D07~If a 160-meter signal and a 2-meter signal pass through the same coaxial cable, how will the attenuation of the two signals compare?~It will be greater at 2 meters~It will be less at 2 meters~It will be the same at both frequencies~It will depend on the emission type in use~A~~None
G9D08~In what values are RF feed line losses usually expressed?~Bels/1000 ft~dB/1000 ft~Bels/100 ft~dB/100 ft~D~~None
G9D09~What standing-wave-ratio will result from the connection of a 50-ohm feed line to a resonant antenna having a 200-ohm feed-point impedance?~4:1~1:4~2:1~1:2~A~~None
G9D10~What standing-wave-ratio will result from the connection of a 50-ohm feed line to a resonant antenna having a 10-ohm feed-point impedance?~2:1~50:1~1:5~5:1~D~~None
G9D11~What standing-wave-ratio will result from the connection of a 50-ohm feed line to a resonant antenna having a 50-ohm feed-point impedance?~2:1~50:50~0:0~1:1~D~~None
