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Questions in US Amateur Radio - General 2007

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NameQuestion Study
G0A01What is one way that RF energy can affect human body tissue?Start
G0A02Which property is NOT important in estimating if an RF signal exceeds the maximum permissible exposure (MPE)?Start
G0A03Which of the following has the most direct effect on the permitted exposure level of RF radiation?Start
G0A04What does "time averaging" mean in reference to RF radiation exposure?Start
G0A05What must you do if an evaluation of your station shows RF energy radiated from your station exceeds permissible limits?Start
G0A06Which transmitter(s) at a multiple user site is/are responsible for RF safety compliance?Start
G0A07What effect does transmitter duty cycle have when evaluating RF exposure?Start
G0A08Which of the following steps must an amateur operator take to ensure compliance with RF safety regulations?Start
G0A09What type of instrument can be used to accurately measure an RF field?Start
G0A10What do the RF safety rules require when the maximum power output capability of an otherwise compliant station is reduced?Start
G0A11What precaution should you take if you install an indoor transmitting antenna?Start
G0A12What precaution should you take whenever you make adjustments or repairs to an antenna?Start
G0A13What precaution should be taken when installing a ground-mounted antenna?Start
G0A14What 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?Start
G0A15How can you determine that your station complies with FCC RF exposure regulations?Start
G0B01Which wire(s) in a four-conductor line cord should be attached to fuses or circuit breakers in a device operated from a 240-VAC single-phase source?Start
G0B02What is the minimum wire size that may be safely used for a circuit that draws up to 20 amperes of continuous current?Start
G0B03Which size of fuse or circuit breaker would be appropriate to use with a circuit that uses AWG number 14 wiring?Start
G0B04What is the mechanism by which electrical shock can be lethal?Start
G0B05Which 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?Start
G0B06Why must the metal chassis of every item of station equipment be grounded (assuming the item has such a chassis)?Start
G0B07Which of the following should be observed for safety when climbing on a tower using a safety belt or harness?Start
G0B08What should be done by any person preparing to climb a tower that supports electrically powered devices?Start
G0B09Why is it not safe to use soldered joints with the wires that connect the base of a tower to a system of ground rods?Start
G0B10Which of the following is a danger from lead-tin solder?Start
G0B11Which of the following is good engineering practice for lightning protection grounds?Start
G0B12What is the purpose of a transmitter power supply interlock?Start
G0B13Which of the following is the most hazardous type of electrical energy?Start
G0B14What is the maximum amount of electrical current flow through the human body that can be tolerated safely?Start
G1A01On which of the following bands is a General Class license holder granted all amateur frequency privileges?Start
G1A02On which of the following bands is phone operation prohibited?Start
G1A03On which of the following bands is image transmission prohibited?Start
G1A04Which amateur band restricts communication to specific channels, using only USB voice, and prohibits all other modes, including CW and data?Start
G1A05Which of the following frequencies is in the General Class portion of the 40 meter band?Start
G1A06Which of the following frequencies is in the 12 meter band?Start
G1A07Which of the following frequencies is within the General class portion of the 75 meter phone band?Start
G1A08Which of the following frequencies is within the General Class portion of the 20 meter phone band?Start
G1A09Which of the following frequencies is within the General Class portion of the 80 meter band?Start
G1A10Which of the following frequencies is within the General Class portion of the 15 meter band?Start
G1A11Which of the following frequencies is available to a control operator holding a General Class license?Start
G1A12When a General Class licensee is not permitted to use the entire voice portion of a particular band, which portion of the voice segment is generally available to them?Start
G1A13Which amateur band is shared with the Citizens Radio Service?Start
G1A14Which of the following applies when the FCC rules designate the amateur service as a secondary user and another service as a primary user on a band?Start
G1A15What must you do if, when operating on either the 30 or 60 meter bands, a station in the primary service interferes with your contact?Start
G1A16Which of the following operating restrictions applies to amateur radio stations as a secondary service in the 60 meter band?Start
G1B01What 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?Start
G1B02With which of the following conditions must beacon stations comply?Start
G1B03Which of the following is a purpose of a beacon station as identified in the FCC Rules?Start
G1B04Which of the following must be true before an amateur station may provide news information to the media during a disaster?Start
G1B05When may music be transmitted by an amateur station?Start
G1B06When is an amateur station permitted to transmit secret codes?Start
G1B07What are the restrictions on the use of abbreviations or procedural signals in the amateur service?Start
G1B08Which of the following is prohibited by the FCC Rules for amateur radio stations?Start
G1B09When may an amateur station transmit communications in which the licensee or control operator has a pecuniary (monetary) interest?Start
G1B10What is the power limit for beacon stations?Start
G1B11How does the FCC require an amateur station to be operated in all respects not covered by the Part 97 rules?Start
G1B12Who or what determines "good engineering and good amateur practice" that apply to operation of an amateur station in all respects not covered by the Part 97 rules?Start
G1B13What restrictions may the FCC place on an amateur station that is causing interference to a broadcast receiver of good engineering design?Start
G1C01What is the maximum transmitting power an amateur station may use on 10.140 MHz?Start
G1C02What is the maximum transmitting power an amateur station may use on the 12 meter band?Start
G1C03What is the maximum transmitting power a General class licensee may use when operating between 7025 and 7125 kHz?Start
G1C04What limitations, other than the 1500 watt PEP limit, are placed on transmitter power in the 14 MHz band?Start
G1C05What is the maximum transmitting power a station with a General Class control operator may use on the 28 MHz band?Start
G1C06What is the maximum transmitting power an amateur station may use on 1825 kHz?Start
G1C07Which of the following is a requirement when a station is transmitting on the 60 meter band?Start
G1C08What is the maximum symbol rate permitted for RTTY emissions transmitted on frequency bands below 28 MHz?Start
G1C09What is the maximum symbol rate permitted for packet emission transmissions on the 2 meter band?Start
G1C10What is the maximum symbol rate permitted for RTTY or data emission transmissions on the 10 meter band?Start
G1C11What is the maximum symbol rate permitted for RTTY or data emission transmissions on the 6 and 2 meter bands?Start
G1C12What is the maximum authorized bandwidth for RTTY, data or multiplexed emissions using an unspecified digital code transmitted on the 6 and 2 meter bands?Start
G1C13What is the maximum bandwidth permitted by FCC rules for amateur radio stations when operating on USB frequencies in the 60-meter band?Start
G1D01What is the proper way to identify when transmitting on General class frequencies if you have a CSCE for the required elements but your upgrade from Technician has not appeared in the ULS database?Start
G1D02What license examinations may you administer when you are an accredited VE holding a General Class operator license?Start
G1D03Which of the following band segments may you operate on if you are a Technician Class operator and have a CSCE for General Class privileges?Start
G1D04Which of the following are requirements for administering a Technician Class operator examination?Start
G1D05Which of the following is sufficient for you to be an administering VE for a Technician Class operator license examination?Start
G1D06When must you add the special identifier "AG" after your call sign if you are a Technician Class licensee and have a CSCE for General Class operator privileges?Start
G1D07Who is responsible at a Volunteer Exam Session for determining the correctness of the answers on the exam?Start
G1D08What document must be issued to a person that passes an exam element?Start
G1D09How long is a Certificate of Successful Completion of Examination (CSCE) valid for exam element credit?Start
G1D10What is the minimum age that one must be to qualify as an accredited Volunteer Examiner?Start
G1D11What criteria must be met for a non U.S. citizen to be an accredited Volunteer Examiner?Start
G1D12Volunteer Examiners are accredited by what organization?Start
G1D13When may you participate as a VE in administering an amateur radio license examination?Start
G1E01Which of the following would disqualify a third party from participating in stating a message over an amateur station?Start
G1E02When may a 10 meter repeater retransmit the 2 meter signal from a station having a Technician Class control operator?Start
G1E03What kind of amateur station simultaneously retransmits the signals of other stations on another channel?Start
G1E04Which of the following conditions require an amateur radio station to take specific steps to avoid harmful interference to other users or facilities?Start
G1E05What types of messages for a third party in another country may be transmitted by an amateur station?Start
G1E06Which of the following applies in the event of interference between a coordinated repeater and an uncoordinated repeater?Start
G1E07With which of the following is third-party traffic prohibited, except for messages directly involving emergencies or disaster relief communications?Start
G1E08Which of the following is a requirement for a non-licensed person to communicate with a foreign amateur radio station from a US amateur station at which a licensed control operator is present?Start
G1E09What language must you use when identifying your station if you are using a language other than English in making a contact?Start
G1E10Which of the following is a permissible third party communication during routine amateur radio operations?Start
G2A01Which sideband is most commonly used for phone communications on the bands above 20 meters?Start
G2A02Which sideband is commonly used on the 160, 75, and 40 meter bands?Start
G2A03Which sideband is commonly used in the VHF and UHF bands?Start
G2A04Which mode is most commonly used for voice communications on the 17 and 12 meter bands?Start
G2A05Which mode of voice communication is most commonly used on the High Frequency Amateur bands?Start
G2A06Which of the following is an advantage when using single sideband as compared to other voice modes on the HF amateur bands?Start
G2A07Which of the following statements is true of the single sideband (SSB) voice mode?Start
G2A08Which of the following statements is true of single sideband (SSB) voice mode?Start
G2A09Why do most amateur stations use lower sideband on the 160, 75 and 40 meter bands?Start
G2A10Which of the following statements is true of VOX operation?Start
G2A11Which of the following user adjustable controls are usually associated with VOX circuitry?Start
G2A12What is the recommended way to break into a conversation when using phone?Start
G2A13What does the expression "CQ DX" usually indicate?Start
G2B01What action should be taken if the frequency on which a net normally meets is in use just before the net begins?Start
G2B02What should be done if a net is about to begin on a frequency you and another station are using?Start
G2B03What should you do if you notice increasing interference from other activity on a frequency you are using?Start
G2B04What minimum frequency separation between CW signals should be allowed to minimize interference?Start
G2B05What minimum frequency separation between SSB signals should be allowed to minimize interference?Start
G2B06What minimum frequency separation between 170 Hz shift RTTY signals should be allowed to minimize interference?Start
G2B07What is a band plan?Start
G2B08What is the "DX window" in a voluntary band plan?Start
G2B09What should you do to comply with good amateur practice when choosing a frequency for Slow-Scan TV (SSTV) operation?Start
G2B10What should you do to comply with good amateur practice when choosing a frequency for radio-teletype (RTTY) operation?Start
G2B11What should you do to comply with good amateur practice when choosing a frequency for HF PSK operation?Start
G2B12What is a practical way to avoid harmful interference when selecting a frequency to call CQ using phone?Start
G2B13What is a practical way to avoid harmful interference when calling CQ using Morse code or CW?Start
G2C01When normal communications systems are not available, what means may an amateur station use to provide essential communications when there is an immediate threat to the safety of human life or the protection of property?Start
G2C02Who may be the control operator of an amateur station transmitting in RACES to assist relief operations during a disaster?Start
G2C03When may the FCC restrict normal frequency operations of amateur stations participating in RACES?Start
G2C04When is an amateur station prevented from using any means at its disposal to assist another station in distress?Start
G2C05What type of transmission would a control operator be making when transmitting out of the amateur band without station identification during a life threatening emergency?Start
G2C07What is the first thing you should do if you are communicating with another amateur station and hear a station in distress break in?Start
G2C08When are you prohibited from helping a station in distress?Start
G2C09What type of transmissions may an amateur station make during a disaster?Start
G2C10Which emission mode must be used to obtain assistance during a disaster?Start
G2C11What information should be given to a station answering a distress transmission?Start
G2C12What frequency should be used to send a distress call?Start
G2D01What is the Amateur Auxiliary to the FCC?Start
G2D02What are the objectives of the Amateur Auxiliary?Start
G2D03What skills learned during "Fox Hunts" are of help to the Amateur Auxiliary?Start
G2D04What is an azimuthal projection map?Start
G2D05What is the most useful type of map to use when orienting a directional HF antenna toward a distant station?Start
G2D06How is a directional antenna pointed when making a "long-path" contact with another station?Start
G2D07Which of the following information must a licensee retain as part of their station records?Start
G2D08Why do many amateurs keep a log even though the FCC doesn't require it?Start
G2D09What information is traditionally contained in a station log?Start
G2D10What is QRP operation?Start
G2D11Which HF antenna would be the best to use for minimizing interference?Start
G2D12Which of the following is required by the FCC rules when operating in the 60 meter band?Start
G2E01Which mode should be selected when using a SSB transmitter with an Audio Frequency Shift Keying (AFSK) RTTY signal?Start
G2E02How many data bits are sent in a single PSK31 character?Start
G2E03What part of a data packet contains the routing and handling information?Start
G2E04Which of the following 20 meter band segments is most often used for most data transmissions?Start
G2E05Which of the following describes Baudot RTTY?Start
G2E06What is the most common frequency shift for RTTY emissions in the amateur HF bands?Start
G2E07What does the abbreviation "RTTY" stand for?Start
G2E08What segment of the 80 meter band is most commonly used for data transmissions?Start
G2E09Where are PSK signals generally found on the 20 meter band?Start
G2E10What is a major advantage of MFSK16 compared to other digital modes?Start
G2E11What does the abbreviation "MFSK" stand for?Start
G2F01Which of the following describes full break-in telegraphy (QSK)?Start
G2F02What should you do if a CW station sends "QRS" when using Morse code?Start
G2F03What does it mean when a CW operator sends "KN" at the end of a transmission?Start
G2F04What does it mean when a CW operator sends "CL" at the end of a transmission?Start
G2F05What is the best speed to use answering a CQ in Morse Code?Start
G2F06What does the term "zero beat" mean in CW operation?Start
G2F08What prosign is sent using CW to indicate the end of a formal message?Start
G2F09What does the Q signal "QSL" mean when operating CW?Start
G2F10What does the Q signal "QRQ" mean when operating CW?Start
G2F11What does the Q signal "QRV" mean when operating CW?Start
G2FO7When sending CW, what does a "C" mean when added to the RST report?Start
G3A01What can be done at an amateur station to continue communications during a sudden ionospheric disturbance?Start
G3A02What effect does a Sudden Ionospheric Disturbance (SID) have on the daytime ionospheric propagation of HF radio waves?Start
G3A03How long does it take the increased ultraviolet and X-ray radiation from solar flares to affect radio-wave propagation on the Earth?Start
G3A04What is measured by the solar flux index?Start
G3A05What is the solar-flux index?Start
G3A06What is a geomagnetic disturbance?Start
G3A07Which latitudes have propagation paths that are more sensitive to geomagnetic disturbances?Start
G3A08What can be an effect of a geomagnetic storm on radio-wave propagation?Start
G3A09What is the effect on radio communications when sunspot numbers are high?Start
G3A10What is the sunspot number?Start
G3A11How long is the typical sunspot cycle?Start
G3A12What is the K-index?Start
G3A13What is the A-index?Start
G3A14How are radio communications usually affected by the charged particles that reach the Earth from solar coronal holes?Start
G3A15How long does it take charged particles from Coronal Mass Ejections to affect radio- wave propagation on the Earth?Start
G3A16What is a possible benefit to radio communications resulting from periods of high geomagnetic activity?Start
G3A17At what point in the solar cycle does the 20 meter band usually support worldwide propagation during daylight hours?Start
G3A18If the HF radio-wave propagation (skip) is generally good on the 24-MHz and 28-MHz bands for several days, when might you expect a similar condition to occur?Start
G3A19Which frequencies are least reliable for long distance communications during periods of low solar activity?Start
G3B01Which band should offer the best chance for a successful contact if the maximum usable frequency (MUF) between the two stations is 22 MHz?Start
G3B02Which band should offer the best chance for a successful contact if the maximum usable frequency (MUF) between the two stations is 16 MHz?Start
G3B03Which of the following guidelines should be selected for lowest attenuation when transmitting on HF?Start
G3B04What is a reliable way to determine if the maximum usable frequency (MUF) is high enough to support 28-MHz propagation between your station and Western Europe?Start
G3B05What usually happens to radio waves with frequencies below the maximum usable frequency (MUF) when they are sent into the ionosphere?Start
G3B06What usually happens to radio waves with frequencies below the lowest usable frequency (LUF)?Start
G3B07What does LUF stand for?Start
G3B08What does MUF stand for?Start
G3B09What is the maximum distance along the Earth's surface that is normally covered in one hop using the F2 region?Start
G3B10What is the maximum distance along the Earth's surface that is normally covered in one hop using the E region?Start
G3B11What happens to HF propagation when the lowest usable frequency (LUF) exceeds the maximum usable frequency (MUF)?Start
G3B12What factors affect the maximum usable frequency (MUF)?Start
G3B13How might a sky-wave signal sound if it arrives at your receiver by both short path and long path propagation?Start
G3B14Which of the following is a good indicator of the possibility of sky-wave propagation on the 6 meter band?Start
G3C01Which of the following ionospheric layers is closest to the surface of the Earth?Start
G3C02When can the F2 region be expected to reach its maximum height at your location?Start
G3C03Why is the F2 region mainly responsible for the longest distance radio wave propagation?Start
G3C04What does the term "critical angle" mean as used in radio wave propagation?Start
G3C05Why is long distance communication on the 40, 60, 80 and 160 meter bands more difficult during the day?Start
G3C06What is a characteristic of HF scatter signals?Start
G3C07What makes HF scatter signals often sound distorted?Start
G3C08Why are HF scatter signals in the skip zone usually weak?Start
G3C09What 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?Start
G3C10Which of the following might be an indication that signals heard on the HF bands are being received via scatter propagation?Start
G3C11Which of the following is true about ionospheric absorption near the maximum usable frequency (MUF)?Start
G3C12Which ionospheric layer is the most absorbent of long skip signals during daylight hours on frequencies below 10 MHz?Start
G3C13What is Near Vertical Incidence Sky-wave (NVIS) propagation?Start
G3C14Which of the following antennas will be most effective for skip communications on 40 meters during the day?Start
G4A01Which of the following is one use for a DSP in an amateur station?Start
G4A02Which of the following instruments may be used to measure the output of a single- sideband transmitter when performing a two-tone test of amplitude linearity?Start
G4A03Which of the following is needed for a DSP IF filter?Start
G4A04Which of the following is an advantage of a receiver IF filter created with a DSP as compared to an analog filter?Start
G4A05How is DSP filtering accomplished?Start
G4A06What reading on the plate current meter of a vacuum tube RF power amplifier indicates correct adjustment of the plate tuning control?Start
G4A07What is the correct adjustment for the "Load" or "Coupling" control of a vacuum tube RF power amplifier?Start
G4A08Which of the following techniques is used to neutralize an RF amplifier?Start
G4A09What does a neutralizing circuit do in an RF amplifier?Start
G4A10What is the reason for neutralizing the final amplifier stage of a transmitter?Start
G4A11What type of transmitter performance does a two-tone test analyze?Start
G4A12What type of signals are used to conduct a two-tone test?Start
G4A13Which of the following performs automatic notching of interfering carriers?Start
G4B01What item of test equipment contains horizontal and vertical channel amplifiers?Start
G4B02Which of the following is an advantage of an oscilloscope versus a digital voltmeter?Start
G4B03How would a signal tracer normally be used?Start
G4B04How is a noise bridge normally used?Start
G4B05Which of the following is the best instrument to use to check the keying waveform of a CW transmitter?Start
G4B06What signal source is connected to the vertical input of a monitoring oscilloscope when checking the quality of a transmitted signal?Start
G4B07What is an advantage of a digital voltmeter as compared to an analog voltmeter?Start
G4B08What instrument may be used to monitor relative RF output when making antenna and transmitter adjustments?Start
G4B09How much must the power output of a transmitter be raised to change the "S" meter reading on a distant receiver from S8 to S9?Start
G4B10Which of the following can be determined with a field strength meter?Start
G4B11Which of the following might be a use for a field strength meter?Start
G4B12What is one way a noise bridge might be used?Start
G4B13What is one measurement that can be made with a dip meter?Start
G4B14Which of the following must be connected to an antenna analyzer when it is being used for SWR measurements?Start
G4B15Which of the following can be measured with a directional wattmeter?Start
G4B16Why is high input impedance desirable for a voltmeter?Start
G4C01Which of the following might be useful in reducing RF interference to audio-frequency devices?Start
G4C02Which of the following should be installed if a properly operating amateur station is interfering with a nearby telephone?Start
G4C03What sound is heard from a public-address system if there is interference from a nearby single-sideband phone transmitter?Start
G4C04What is the effect on a public-address system if there is interference from nearby CW transmitter?Start
G4C05What might be the problem if you receive an RF burn when touching your equipment while transmitting on a HF band, assuming the equipment is connected to a ground rod?Start
G4C06Which of the following is an important reason to have a good station ground?Start
G4C07What is one good way to avoid stray RF energy in an amateur station?Start
G4C08Which of the following is a reason to place ferrite beads around audio cables to reduce common mode RF interference?Start
G4C09Which of the following statements about station grounding is true?Start
G4C10Which of the following is covered in the National Electrical Code?Start
G4C11Which of the following can cause unintended rectification of RF signal energy and can result in interference to your station as well as nearby radio and TV receivers?Start
G4C12What is one cause of broadband radio frequency interference at an amateur radio station?Start
G4C13How can a ground loop be avoided?Start
G4D01What is the reason for using a properly adjusted speech processor with a single sideband phone transmitter?Start
G4D02Which of the following describes how a speech processor affects a transmitted single sideband signal?Start
G4D03Which of the following can be the result of an incorrectly adjusted speech processor?Start
G4D04What does an S-meter measure?Start
G4D05How does an S-meter reading of 20 db over S-9 compare to an S-9 signal, assuming a properly calibrated S meter?Start
G4D06Where is an S-meter generally found?Start
G4D07Which of the following describes a Type-N connector?Start
G4D08Which of the following connectors would be a good choice for a serial data port?Start
G4D09Which of these connector types is commonly used for RF service at frequencies up to 150 MHz?Start
G4D10Which of these connector types is commonly used for audio signals in amateur radio stations?Start
G4D11What is the main reason to use keyed connectors over non-keyed types?Start
G4E01Which of the following emission types are permissible while operating HF mobile?Start
G4E02What is alternator whine?Start
G4E03Which of the following power connections would be the best for a 100-watt HF mobile installation?Start
G4E04Why is it best NOT to draw the DC power for a 100-watt HF transceiver from an automobile's cigarette lighter socket?Start
G4E05Which of the following most limits the effectiveness of an HF mobile transceiver operating in the 75 meter band?Start
G4E06Which of the following is true of an emergency generator installation?Start
G4E07When might a lead-acid storage battery give off explosive hydrogen gas?Start
G4E08What is the name of the process by which sunlight is changed directly into electricity?Start
G4E09What is the approximate open-circuit voltage from a modern, well illuminated photovoltaic cell?Start
G4E10Which of these materials is used as the active element of a solar cell?Start
G4E11Which of the following is a disadvantage to using wind power as the primary source of power for an emergency station?Start
G4E12Which of the following is a primary reason for not placing a gasoline-fueled generator inside an occupied area?Start
G4E13Why would it be unwise to power your station by back feeding the output of a gasoline generator into your house wiring by connecting the generator through an AC wall outlet?Start
G5A01What is impedance?Start
G5A02What is reactance?Start
G5A03Which of the following causes opposition to the flow of alternating current in an inductor?Start
G5A04Which of the following causes opposition to the flow of alternating current in a capacitor?Start
G5A05How does a coil react to AC?Start
G5A06How does a capacitor react to AC?Start
G5A07What happens when the impedance of an electrical load is equal to the internal impedance of the power source?Start
G5A08Why is impedance matching important?Start
G5A09What unit is used to measure reactance?Start
G5A10What unit is used to measure impedance?Start
G5A11Why should core saturation of a conventional impedance matching transformer be avoided?Start
G5A12What is one reason to use an impedance matching transformer?Start
G5A13Which of the following devices can be used for impedance matching at radio frequencies?Start
G5A14Which of the following describes one method of impedance matching between two AC circuits?Start
G5B01A two-times increase or decrease in power results in a change of how many dB?Start
G5B02How does the total current relate to the individual currents in each branch of a parallel circuit?Start
G5B03How many watts of electrical power are used if 400 VDC is supplied to an 800-ohm load?Start
G5B04How many watts of electrical power are used by a 12-VDC light bulb that draws 0.2 amperes?Start
G5B05How many watts are being dissipated when a current of 7.0 milliamperes flows through 1.25 kilohms?Start
G5B06What 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?Start
G5B07Which measurement of an AC signal is equivalent to a DC voltage of the same value?Start
G5B08What is the peak-to-peak voltage of a sine wave that has an RMS voltage of 120 volts?Start
G5B09What is the RMS voltage of sine wave with a value of 17 volts peak?Start
G5B11What is the ratio of peak envelope power to average power for an unmodulated carrier?Start
G5B12What would be the voltage across a 50-ohm dummy load dissipating 1200 watts?Start
G5B13What percentage of power loss would result from a transmission line loss of 1 dB?Start
G5B14What 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?Start
G5B15What is the output PEP of an unmodulated carrier if an average reading wattmeter connected to the transmitter output indicates 1060 watts?Start
G5C01What causes a voltage to appear across the secondary winding of a transformer when an AC voltage source is connected across its primary winding?Start
G5C02Where is the source of energy normally connected in a transformer?Start
G5C03What is current in the primary winding of a transformer called if no load is attached to the secondary?Start
G5C04What is the total resistance of three 100-ohm resistors in parallel?Start
G5C05What is the value of each resistor if three equal value resistors in parallel produce 50 ohms of resistance, and the same three resistors in series produce 450 ohms?Start
G5C06What is the voltage across a 500-turn secondary winding in a transformer if the 2250- turn primary is connected to 120 VAC?Start
G5C07What is the turns ratio of a transformer used to match an audio amplifier having a 600-ohm output impedance to a speaker having a 4-ohm impedance?Start
G5C08What is the equivalent capacitance of two 5000 picofarad capacitors and one 750 picofarad capacitor connected in parallel?Start
G5C09What is the capacitance of three 100 microfarad capacitors connected in series?Start
G5C10What is the inductance of three 10 millihenry inductors connected in parallel?Start
G5C11What is the inductance of a 20 millihenry inductor in series with a 50 millihenry inductor?Start
G5C12What is the capacitance of a 20 microfarad capacitor in series with a 50 microfarad capacitor?Start
G5C13What component should be added to a capacitor in a circuit to increase the circuit capacitance?Start
G5C14What component should be added to an inductor in a circuit to increase the circuit inductance?Start
G5C15What is the total resistance of a 10 ohm, a 20 ohm, and a 50 ohm resistor in parallel?Start
G5C16What component should be added to an existing resistor in a circuit to increase circuit resistance?Start
G6A01What will happen to the resistance if the temperature of a carbon resistor is increased?Start
G6A02What type of capacitor is often used in power-supply circuits to filter the rectified AC?Start
G6A03Which of the following is the primary advantage of ceramic capacitors?Start
G6A04Which of the following is an advantage of an electrolytic capacitor?Start
G6A05Which of the following is one effect of lead inductance in a capacitor used at VHF and above?Start
G6A06What is the main disadvantage of using a conventional wire-wound resistor in a resonant circuit?Start
G6A07What is an advantage of using a ferrite core with a toroidal inductor?Start
G6A08How should two solenoid inductors be placed so as to minimize their mutual inductance?Start
G6A09Why might it be important to minimize the mutual inductance between two inductors?Start
G6A10What is an effect of inter-turn capacitance in an inductor?Start
G6A11What is the common name for a capacitor connected across a transformer secondary that is used to absorb transient voltage spikes?Start
G6A12What is the common name for an inductor used to help smooth the DC output from the rectifier in a conventional power supply?Start
G6A13What type of component is a thermistor?Start
G6B01What is the peak-inverse-voltage rating of a rectifier?Start
G6B02What are the two major ratings that must not be exceeded for silicon-diode rectifiers?Start
G6B03What is the approximate junction threshold voltage of a germanium diode?Start
G6B04When two or more diodes are connected in parallel to increase current handling capacity, what is the purpose of the resistor connected in series with each diode?Start
G6B05What is the approximate junction threshold voltage of a silicon diode?Start
G6B06Which of the following is an advantage of using a Schottky diode in an RF switching circuit as compared to a standard silicon diode?Start
G6B07What are the stable operating points for a bipolar transistor that is used as a switch in a logic circuit?Start
G6B08Why is it often necessary to insulate the case of a large power transistor?Start
G6B09Which of the following describes the construction of a MOSFET?Start
G6B10Which element of a triode vacuum tube is used to regulate the flow of electrons between cathode and plate?Start
G6B11Which of the following solid state devices is most like a vacuum tube in its general characteristics?Start
G6B12What is the primary purpose of a screen grid in a vacuum tube?Start
G6B13What is an advantage of the low internal resistance of Nickel Cadmium batteries?Start
G6B14What is the minimum allowable discharge voltage for maximum life of a standard 12 volt lead acid battery?Start
G6B15When is it acceptable to recharge a carbon-zinc primary cell?Start
G6B16Which of the following is a rechargeable battery?Start
G6C01Which of the following is most often provided as an analog integrated circuit?Start
G6C02Which of the following is the most commonly used digital logic family of integrated circuits?Start
G6C03Which of the following is an advantage of CMOS Logic integrated circuits compared to TTL logic circuits?Start
G6C04What is meant by the term ROM?Start
G6C05What is meant when memory is characterized as "non-volatile"?Start
G6C06Which type of integrated circuit is an operational amplifier?Start
G6C07What is one disadvantage of an incandescent indicator compared to a LED?Start
G6C08How is an LED biased when emitting light?Start
G6C09Which of the following is a characteristic of a liquid crystal display?Start
G6C10What is meant by the term MMIC?Start
G6C11What is a microprocessor?Start
G6C12What two devices in an amateur radio station might be connected using a USB interface?Start
G7A01What safety feature does a power-supply bleeder resistor provide?Start
G7A02What components are used in a power-supply filter network?Start
G7A03What should be the minimum peak-inverse-voltage rating of the rectifier in a full- wave power supply?Start
G7A04What should be the approximate minimum peak-inverse-voltage rating of the rectifier in a half-wave power supply?Start
G7A05What should be the impedance of a low-pass filter as compared to the impedance of the transmission line into which it is inserted?Start
G7A06Which of the following might be used to process signals from the balanced modulator and send them to the mixer in a single-sideband phone transmitter?Start
G7A07Which circuit is used to combine signals from the carrier oscillator and speech amplifier and send the result to the filter in a typical single-sideband phone transmitter?Start
G7A08What circuit is used to process signals from the RF amplifier and local oscillator and send the result to the IF filter in a superheterodyne receiver?Start
G7A09What circuit is used to process signals from the IF amplifier and BFO and send the result to the AF amplifier in a single-sideband phone superheterodyne receiver?Start
G7A10What is an advantage of a crystal controlled transmitter?Start
G7A11What is the simplest combination of stages that can be combined to implement a superheterodyne receiver?Start
G7A12What type of receiver is suitable for CW and SSB reception but does not require a mixer stage or an IF amplifier?Start
G7A13What type of circuit is used in many FM receivers to convert signals coming from the IF amplifier to audio?Start
G7A14Which of the following is a desirable characteristic for capacitors used to filter the DC output of a switching power supply?Start
G7A15Which of the following is an advantage of a switched-mode power supply as compared to a linear power supply?Start
G7A16What portion of the AC cycle is converted to DC by a half-wave rectifier?Start
G7A17What portion of the AC cycle is converted to DC by a full-wave rectifier?Start
G7A18What is the output waveform of an unfiltered full-wave rectifier connected to a resistive load?Start
G7A19Which symbol in figure G7-1 represents a fixed resistor?Start
G7A20Which symbol in figure G7-1 represents a single cell battery?Start
G7A21Which symbol in figure G7-1 represents a NPN transistor?Start
G7A22Which symbol in figure G7-1 represents a variable capacitor?Start
G7A23Which symbol in figure G7-1 represents a transformer?Start
G7A24Which symbol in figure G7-1 represents a single pole switch?Start
G7B01Which of the following describes a "flip-flop" circuit?Start
G7B02Why do digital circuits use the binary number system?Start
G7B03What is the output of a two-input NAND gate, given both inputs are "one"?Start
G7B04What is the output of a NOR gate given that both inputs are "zero"?Start
G7B05How many states are there in a 3-bit binary counter?Start
G7B06What is a shift register?Start
G7B07What are the basic components of virtually all oscillators?Start
G7B08What determines the frequency of an RC oscillator?Start
G7B09What determines the frequency of an LC oscillator?Start
G7B10Which of the following is a characteristic of a Class A amplifier?Start
G7B11For which of the following modes is a Class C power stage appropriate for amplifying a modulated signal?Start
G7B12Which of the following is an advantage of a Class C amplifier?Start
G7B13How is the efficiency of an RF power amplifier determined?Start
G7B14Which of the following describes a linear amplifier?Start
G8A01What is the name of the process that changes the envelope of an RF wave to convey information?Start
G8A02What is the name of the process that changes the phase angle of an RF wave to convey information?Start
G8A03What is the name of the process which changes the frequency of an RF wave to convey information?Start
G8A04What emission is produced by a reactance modulator connected to an RF power amplifier?Start
G8A05What type of transmission varies the instantaneous power level of the RF signal to convey information?Start
G8A06What is one advantage of carrier suppression in a single-sideband phone transmission?Start
G8A07Which of the following phone emissions uses the narrowest frequency bandwidth?Start
G8A08What happens to the signal of an over-modulated single-sideband phone transmitter?Start
G8A09What control is typically adjusted for proper ALC setting on an amateur single sideband transceiver?Start
G8A10What is meant by flat-topping of a single-sideband phone transmission?Start
G8A11What happens to the RF carrier signal when a modulating audio signal is applied to an FM transmitter?Start
G8A12What signal(s) would be found at the output of a properly adjusted balanced modulator?Start
G8B01What receiver stage combines a 14.250 MHz input signal with a 13.795 MHz oscillator signal to produce a 455 kHz intermediate frequency (IF) signal?Start
G8B02If 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?Start
G8B03What stage in a transmitter would change a 5.3 MHz input signal to 14.3 MHz?Start
G8B04What 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?Start
G8B05Why isn't frequency modulated (FM) phone used below 29.5 MHz?Start
G8B06What is the total bandwidth of an FM-phone transmission having a 5 kHz deviation and a 3 kHz modulating frequency?Start
G8B07What is the frequency deviation for a 12.21-MHz reactance-modulated oscillator in a 5-kHz deviation, 146.52-MHz FM-phone transmitter?Start
G8B08How is frequency shift related to keying speed in an FSK signal?Start
G8B09What do RTTY, Morse code, PSK31 and packet communications have in common?Start
G8B10When transmitting a data mode signal, why is it important to know the duty cycle of the mode you are using?Start
G8B11What part of the 20 meter band is most commonly used for PSK31 operation?Start
G8B12What is another term for the mixing of two RF signals?Start
G9A01Which of the following factors help determine the characteristic impedance of a parallel conductor antenna feedline?Start
G9A02What is the typical characteristic impedance of coaxial cables used for antenna feedlines at amateur stations?Start
G9A03What is the characteristic impedance of flat ribbon TV type twin lead?Start
G9A04What is a common reason for the occurrence of reflected power at the point where a feedline connects to an antenna?Start
G9A05What must be done to prevent standing waves on an antenna feedline?Start
G9A06Which of the following is a reason for using an inductively coupled matching network between the transmitter and parallel conductor feed line feeding an antenna?Start
G9A07How does the attenuation of coaxial cable change as the frequency of the signal it is carrying increases?Start
G9A08In what values are RF feed line losses usually expressed?Start
G9A09What standing-wave-ratio will result from the connection of a 50-ohm feed line to a non-reactive load having a 200-ohm impedance?Start
G9A10What standing-wave-ratio will result from the connection of a 50-ohm feed line to a non-reactive load having a 10-ohm impedance?Start
G9A11What standing-wave-ratio will result from the connection of a 50-ohm feed line to a non-reactive load having a 50-ohm impedance?Start
G9A12What would be the SWR if you feed a vertical antenna that has a 25-ohm feed-point impedance with 50-ohm coaxial cable?Start
G9A13What would be the SWR if you feed a folded dipole antenna that has a 300-ohm feed- point impedance with 50-ohm coaxial cable?Start
G9A14If the SWR on an antenna feedline is 5 to 1, and a matching network at the transmitter end of the feedline is adjusted to 1 to 1 SWR, what is the resulting SWR on the feedline?Start
G9B01What is one disadvantage of a directly fed random-wire antenna?Start
G9B02What is an advantage of downward sloping radials on a ground-plane antenna?Start
G9B03What happens to the feed-point impedance of a ground-plane antenna when its radials are changed from horizontal to downward-sloping?Start
G9B04What is the low angle azimuthal radiation pattern of an ideal half-wavelength dipole antenna installed 1/2 wavelength high and parallel to the earth?Start
G9B05How does antenna height affect the horizontal (azimuthal) radiation pattern of a horizontal dipole HF antenna?Start
G9B06Where should the radial wires of a ground-mounted vertical antenna system be placed?Start
G9B07How does the feed-point impedance of a 1/2 wave dipole antenna change as the antenna is lowered from 1/4 wave above ground?Start
G9B08How does the feed-point impedance of a 1/2 wave dipole change as the feed-point location is moved from the center toward the ends?Start
G9B09Which of the following is an advantage of a horizontally polarized as compared to vertically polarized HF antenna?Start
G9B10What is the approximate length for a 1/2-wave dipole antenna cut for 14.250 MHz?Start
G9B11What is the approximate length for a 1/2-wave dipole antenna cut for 3.550 MHz?Start
G9B12What is the approximate length for a 1/4-wave vertical antenna cut for 28.5 MHz?Start
G9C01How can the SWR bandwidth of a Yagi antenna be increased?Start
G9C02What is the approximate length of the driven element of a Yagi antenna?Start
G9C03Which statement about a three-element single-band Yagi antenna is true?Start
G9C04Which statement about a Yagi antenna is true?Start
G9C05What is one effect of increasing the boom length and adding directors to a Yagi antenna?Start
G9C06Which of the following is a reason why a Yagi antenna is often used for radio communications on the 20 meter band?Start
G9C07What does "front-to-back ratio" mean in reference to a Yagi antenna?Start
G9C08What is meant by the "main lobe" of a directive antenna?Start
G9C09What is the approximate maximum theoretical forward gain of a 3 Element Yagi antenna?Start
G9C10Which of the following is a Yagi antenna design variable that could be adjusted to optimize forward gain, front-to-back ratio, or SWR bandwidth?Start
G9C11What is the purpose of a "gamma match" used with Yagi antennas?Start
G9C12Which of the following describes a common method for insulating the driven element of a Yagi antenna from the metal boom when using a gamma match?Start
G9C13Approximately how long is each side of a cubical-quad antenna driven element?Start
G9C14How does the forward gain of a 2-element cubical-quad antenna compare to the forward gain of a 3 element Yagi antenna?Start
G9C15Approximately how long is each side of a cubical-quad antenna reflector element?Start
G9C16How does the gain of a two element delta-loop beam compare to the gain of a two element cubical quad antenna?Start
G9C17Approximately how long is each leg of a symmetrical delta-loop antenna Driven element?Start
G9C18Which of the following antenna types consists of a driven element and some combination of parasitically excited reflector and/or director elements?Start
G9C19What type of directional antenna is typically constructed from 2 square loops of wire each having a circumference of approximately one wavelength at the operating frequency and separated by approximately 0.2 wavelength?Start
G9C20What happens when the feed-point of a cubical quad antenna is changed from the center of the lowest horizontal wire to the center of one of the vertical wires?Start
G9C21What configuration of the loops of a cubical-quad antenna must be used for the antenna to operate as a beam antenna, assuming one of the elements is used as a reflector?Start
G9D01What does the term "NVIS" mean as related to antennas?Start
G9D02Which of the following is an advantage of an NVIS antenna?Start
G9D03At what height above ground is an NVIS antenna typically installed?Start
G9D04How does the gain of two 3-element horizontally polarized Yagi antennas spaced vertically 1/2 wave apart from each other typically compare to the gain of a single 3-element Yagi?Start
G9D05What is the advantage of vertical stacking of horizontally polarized Yagi antennas?Start
G9D06Which of the following is an advantage of a log periodic antenna?Start
G9D07Which of the following describes a log periodic antenna?Start
G9D08Why is a Beverage antenna generally not used for transmitting?Start
G9D09Which of the following is an application for a Beverage antenna?Start
G9D10Which of the following describes a Beverage antenna?Start
G9D11Which of the following is a disadvantage of multiband antennas?Start
G9D12What is the primary purpose of traps installed in antennas?Start