Which of the following frequencies is within the General class portion of the 15-meter band?

1. A14250 kHz
2. B18155 kHz
3. C21300 kHz
4. D24900 kHz

Who or what determines "good engineering and good amateur practice," as applied to the operation of an amateur station in all respects not covered by the Part 97 rules?

1. AThe FCC
2. BThe control operator
3. CThe IEEE
4. DThe ITU

What is the maximum transmitter power an amateur station may use on 10.140 MHz?

1. A200 watts PEP output
2. B1000 watts PEP output
3. C1500 watts PEP output
4. D2000 watts PEP output

When operating a US station by remote control from outside the country, what license is required of the control operator?

1. AA US operator/primary station license
2. BOnly an appropriate US operator/primary license and a special remote station permit from the FCC
3. COnly a license from the foreign country, as long as the call sign includes identification of portable operation in the US
4. DA license from the foreign country and a special remote station permit from the FCC

Why should an amateur operator normally avoid transmitting on 14.100, 18.110, 21.150, 24.930 and 28.200 MHz?

1. AA system of propagation beacon stations operates on those frequencies
2. BA system of automatic digital stations operates on those frequencies
3. CThese frequencies are set aside for emergency operations
4. DThese frequencies are set aside for bulletins from the FCC

What control is typically adjusted for proper ALC setting on a single sideband transceiver?

1. ARF clipping level
2. BTransmit audio or microphone gain
3. CAntenna inductance or capacitance
4. DAttenuator level

When selecting an SSB transmitting frequency, what minimum separation should be used to minimize interference to stations on adjacent frequencies?

1. A5 Hz to 50 Hz
2. B150 Hz to 500 Hz
3. C2 kHz to 3 kHz
4. DApproximately 6 kHz

What does the Q signal "QRV" mean?

1. AYou are sending too fast
2. BThere is interference on the frequency
3. CI am quitting for the day
4. DI am ready to receive

What is the Volunteer Monitor Program?

1. AAmateur volunteers who are formally enlisted to monitor the airwaves for rules violations
2. BAmateur volunteers who conduct amateur licensing examinations
3. CAmateur volunteers who conduct frequency coordination for amateur VHF repeaters
4. DAmateur volunteers who use their station equipment to help civil defense organizations in times of emergency

Which of the following describes Winlink?

1. AAn amateur radio wireless network to send and receive email on the internet
2. BA form of Packet Radio
3. CA wireless network capable of both VHF and HF band operation
4. DAll these choices are correct

Approximately how long does it take the increased ultraviolet and X-ray radiation from a solar flare to affect radio propagation on Earth?

1. A28 days
2. B1 to 2 hours
3. C8 minutes
4. D20 to 40 hours

What is a characteristic of skywave signals arriving at your location by both short-path and long-path propagation?

1. APeriodic fading approximately every 10 seconds
2. BSignal strength increased by 3 dB
3. CThe signal might be cancelled causing severe attenuation
4. DA slightly delayed echo might be heard

Which ionospheric region is the most absorbent of signals below 10 MHz during daylight hours?

1. AThe F2 region
2. BThe F1 region
3. CThe E region
4. DThe D region

Why should the ALC system be inactive when transmitting AFSK data signals?

1. AALC will invert the modulation of the AFSK mode
2. BThe ALC action distorts the signal
3. CWhen using digital modes, too much ALC activity can cause the transmitter to overheat
4. DAll these choices are correct

What effect can strong signals from nearby transmitters have on an antenna analyzer?

1. ADesensitization which can cause intermodulation products which interfere with impedance readings
2. BReceived power that interferes with SWR readings
3. CGeneration of harmonics which interfere with frequency readings
4. DAll these choices are correct

Why should soldered joints not be used in lightning protection ground connections?

1. AA soldered joint will likely be destroyed by the heat of a lightning strike
2. BSolder flux will prevent a low conductivity connection
3. CSolder has too high a dielectric constant to provide adequate lightning protection
4. DAll these choices are correct

How does a speech processor affect a single sideband phone signal?

1. AIt increases peak power
2. BIt increases average power
3. CIt reduces harmonic distortion
4. DIt reduces intermodulation distortion

What is the purpose of a capacitance hat on a mobile antenna?

1. ATo increase the power handling capacity of a whip antenna
2. BTo reduce radiation resistance
3. CTo electrically lengthen a physically short antenna
4. DTo lower the radiation angle

What unit is used to measure reactance?

1. AFarad
2. BOhm
3. CAmpere
4. DSiemens

How many watts are consumed when a current of 7.0 milliamperes flows through a 1,250-ohm resistance?

1. AApproximately 61 milliwatts
2. BApproximately 61 watts
3. CApproximately 11 milliwatts
4. DApproximately 11 watts

Which of the following components should be added to an inductor to increase the inductance?

1. AA capacitor in series
2. BA capacitor in parallel
3. CAn inductor in parallel
4. DAn inductor in series

Which of the following describes MOSFET construction?

1. AThe gate is formed by a back-biased junction
2. BThe gate is separated from the channel by a thin insulating layer
3. CThe source is separated from the drain by a thin insulating layer
4. DThe source is formed by depositing metal on silicon

How is an LED biased when emitting light?

1. AIn the tunnel-effect region
2. BAt the Zener voltage
3. CReverse biased
4. DForward biased

Which symbol in figure G7-1 represents a field effect transistor?

1. ASymbol 2
2. BSymbol 5
3. CSymbol 1
4. DSymbol 4

Which of the following describes the function of a two-input AND gate?

1. AOutput is high when either or both inputs are low
2. BOutput is high only when both inputs are high
3. COutput is low when either or both inputs are high
4. DOutput is low only when both inputs are high

Which of these functions is performed by software in a software-defined radio (SDR)?

1. AFiltering
2. BDetection
3. CModulation
4. DAll these choices are correct

What is link margin?

1. AThe opposite of fade margin
2. BThe difference between received power level and minimum required signal level at the input to the receiver
3. CTransmit power minus receiver sensitivity
4. DReceiver sensitivity plus 3 dB

Which intermodulation products are closest to the original signal frequencies?

1. ASecond harmonics
2. BEven-order
3. COdd-order
4. DIntercept point

What part of a packet radio frame contains the routing and handling information?

1. ADirectory
2. BPreamble
3. CHeader
4. DTrailer

If the SWR on an antenna feed line is 5:1, and a matching network at the transmitter end of the feed line is adjusted to present a 1:1 SWR to the transmitter, what is the resulting SWR on the feed line?

1. A1:1
2. B5:1
3. CBetween 1:1 and 5:1 depending on the characteristic impedance of the line
4. DBetween 1:1 and 5:1 depending on the reflected power at the transmitter

How does antenna height affect the azimuthal radiation pattern of a horizontal dipole HF antenna at elevation angles higher than about 45 degrees?

1. AIf the antenna is too high, the pattern becomes unpredictable
2. BAntenna height has no effect on the pattern
3. CIf the antenna is less than 1/2 wavelength high, the azimuthal pattern is almost omnidirectional
4. DIf the antenna is less than 1/2 wavelength high, radiation off the ends of the wire is eliminated

What is meant by the "main lobe" of a directive antenna?

1. AThe magnitude of the maximum vertical angle of radiation
2. BThe point of maximum current in a radiating antenna element
3. CThe maximum voltage standing wave point on a radiating element
4. DThe direction of maximum radiated field strength from the antenna

What is the primary use of a Beverage antenna?

1. ADirectional receiving for MF and low HF bands
2. BDirectional transmitting for low HF bands
3. CPortable direction finding at higher HF frequencies
4. DPortable direction finding at lower HF frequencies

Which of the following steps must an amateur operator take to ensure compliance with RF safety regulations?

1. APost a copy of FCC Part 97.13 in the station
2. BNotify neighbors within a 100-foot radius of the antenna of the existence of the station and power levels
3. CPerform a routine RF exposure evaluation and prevent access to any identified high exposure areas
4. DAll these choices are correct

Which size of fuse or circuit breaker would be appropriate to use with a circuit that uses AWG number 14 wiring?

1. A30 amperes
2. B25 amperes
3. C20 amperes
4. D15 amperes