US Amateur Radio - General (Element 3, 2023-2027) Practice Test

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US Amateur Radio - General (Element 3, 2023-2027) Practice Test

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1. - G0A06

What must you do if your station fails to meet the FCC RF exposure exemption criteria?

Select	Answer
A	Contact the FCC for permission to transmit
B	Perform an RF exposure evaluation in accordance with World Meteorological Organization guidelines
C	Perform an RF Exposure Evaluation in accordance with FCC OET Bulletin 65
D	Use an FCC-approved band-pass filter

2. - G0B05

Which of the following conditions will cause a ground fault circuit interrupter (GFCI) to disconnect AC power?

Select	Answer
A	Overvoltage on the hot wires
B	All these choices are correct
C	Current flowing from one or more of the hot wires to the neutral wire
D	Current flowing from one or more of the hot wires directly to ground

3. - G1A06

Which of the following applies when the FCC rules designate the amateur service as a secondary user on a band?

Select	Answer
A	Amateur stations may use the band only during emergencies
B	Amateur stations must record the call sign of the primary service station before operating on a frequency assigned to that station
C	Amateur stations may only operate during specific hours of the day, while primary users are permitted 24-hour use of the band
D	Amateur stations must not cause harmful interference to primary users and must accept interference from primary users

4. - G1B05

Which of the following one-way transmissions are permitted?

Select	Answer
A	Regular transmissions offering equipment for sale, if intended for amateur radio use
B	Transmissions to assist with learning the International Morse code
C	All these choices are correct
D	Unidentified test transmissions of less than 10 seconds in duration

5. - G1C05

What is the limit for transmitter power on the 28 MHz band for a General Class control operator?

Select	Answer
A	1000 watts PEP output
B	1500 watts PEP output
C	100 watts PEP output
D	2000 watts PEP output

6. - G1D12

When operating a station in South America by remote control over the internet from the US, what regulations apply?

Select	Answer
A	Those of both the remote station’s country and the FCC
B	Only those of the remote station’s country
C	Only those of the FCC
D	Those of the remote station’s country and the FCC’s third-party regulations

7. - G1E01

Which of the following would disqualify a third party from participating in sending a message via an amateur station?

Select	Answer
A	All these choices are correct
B	The third party is not a US citizen
C	The third party’s amateur license has been revoked and not reinstated
D	The third party is speaking in a language other than English

8. - G2A01

Which mode is most commonly used for voice communications on frequencies of 14 MHz or higher?

Select	Answer
A	Suppressed sideband
B	Double sideband
C	Upper sideband
D	Lower sideband

9. - G2B08

What is the voluntary band plan restriction for US stations transmitting within the 48 contiguous states in the 50.1 MHz to 50.125 MHz band segment?

Select	Answer
A	Only contacts with stations not within the 48 contiguous states
B	Only digital contacts
C	Only SSTV contacts
D	Only contacts with other stations within the 48 contiguous states

10. - G2C03

What does it mean when a CW operator sends “KN” at the end of a transmission?

Select	Answer
A	Operating full break-in
B	Listening only for a specific station or stations
C	Closing station now
D	No US stations should call

11. - G2D05

Which of the following indicates that you are looking for an HF contact with any station?

Select	Answer
A	Repeat “CQ” a few times, followed by “this is,” then your call sign a few times, then pause to listen, repeat as necessary
B	Transmit an unmodulated carried for approximately 10 seconds, followed by “this is” and your call sign, and pause to listen -- repeat as necessary
C	Sign your call sign once, followed by the words “listening for a call” -- if no answer, change frequency and repeat
D	Say “QTC” followed by “this is” and your call sign -- if no answer, change frequency and repeat

12. - G2E02

What is VARA?

Select	Answer
A	A DX spotting system using a network of software defined radios
B	A low signal-to-noise digital mode used for EME (moonbounce)
C	A digital protocol used with Winlink
D	A radio direction finding system used on VHF and UHF

13. - G3A11

How long does it take a coronal mass ejection to affect radio propagation on Earth?

Select	Answer
A	15 hours to several days
B	14 days
C	28 days
D	4 to 8 minutes

14. - G3B02

What factors affect the MUF?

Select	Answer
A	Time of day and season
B	All these choices are correct
C	Solar radiation and ionospheric disturbances
D	Path distance and location

15. - G3C05

Why is long-distance communication on the 40-, 60-, 80-, and 160-meter bands more difficult during the day?

Select	Answer
A	The D region absorbs signals at these frequencies during daylight hours
B	The F region is unstable during daylight hours
C	The E region is unstable during daylight hours
D	The F region absorbs signals at these frequencies during daylight hours

16. - G4A03

How does a noise blanker work?

Select	Answer
A	By reducing receiver gain during a noise pulse
B	By temporarily increasing received bandwidth
C	By redirecting noise pulses into a filter capacitor
D	By clipping noise peaks

17. - G4B11

Which of the following must be connected to an antenna analyzer when it is being used for SWR measurements?

Select	Answer
A	Transmitter
B	All these choices are correct
C	Receiver
D	Antenna and feed line

18. - G4C06

What is a possible effect of a resonant ground connection?

Select	Answer
A	Overheating of ground straps
B	A ground loop
C	High RF voltages on the enclosures of station equipment
D	Corrosion of the ground rod

19. - G4D03

What is the effect of an incorrectly adjusted speech processor?

Select	Answer
A	All these choices are correct
B	Excessive background noise
C	Excess intermodulation products
D	Distorted speech

20. - G4E09

What is the approximate open-circuit voltage from a fully illuminated silicon photovoltaic cell?

Select	Answer
A	1.38 VDC
B	0.02 VDC
C	0.5 VDC
D	0.2 VDC

21. - G5A09

What unit is used to measure reactance?

Select	Answer
A	Siemens
B	Farad
C	Ohm
D	Ampere

22. - G5B11

What is the ratio of PEP to average power for an unmodulated carrier?

Select	Answer
A	1.00
B	2.00
C	0.707
D	1.414

23. - G5C06

What is the voltage output of a transformer with a 500-turn primary and a 1500-turn secondary when 120 VAC is applied to the primary?

Select	Answer
A	40 volts
B	120 volts
C	360 volts
D	25.5 volts

24. - G6A04

Which of the following is characteristic of an electrolytic capacitor?

Select	Answer
A	Tight tolerance
B	Inexpensive RF capacitor
C	High capacitance for a given volume
D	Much less leakage than any other type

25. - G6B04

What is a typical upper frequency limit for low SWR operation of 50-ohm BNC connectors?

Select	Answer
A	4 GHz
B	40 GHz
C	500 MHz
D	50 MHz

26. - G7A05

What portion of the AC cycle is converted to DC by a half-wave rectifier?

Select	Answer
A	360 degrees
B	90 degrees
C	180 degrees
D	270 degrees

27. - G7B10

Which of the following describes a linear amplifier?

Select	Answer
A	A Class C high efficiency amplifier
B	An amplifier in which the output preserves the input waveform
C	Any RF power amplifier used in conjunction with an amateur transceiver
D	An amplifier used as a frequency multiplier

28. - G7C06

Which of the following is an advantage of a digital signal processing (DSP) filter compared to an analog filter?

Select	Answer
A	Fewer digital components are required
B	A wide range of filter bandwidths and shapes can be created
C	Mixing products are greatly reduced
D	The DSP filter is much more effective at VHF frequencies

29. - G8A08

Which of the following is an effect of overmodulation?

Select	Answer
A	Excessive bandwidth
B	Frequency drift
C	Insufficient bandwidth
D	Insufficient audio

30. - G8B05

Which intermodulation products are closest to the original signal frequencies?

Select	Answer
A	Intercept point
B	Odd-order
C	Even-order
D	Second harmonics

31. - G8C06

What action results from a failure to exchange information due to excessive transmission attempts when using an ARQ mode?

Select	Answer
A	The connection is dropped
B	The checksum overflows
C	Encoding reverts to the default character set
D	Packets will be routed incorrectly

32. - G9A11

What is the effect of transmission line loss on SWR measured at the input to the line?

Select	Answer
A	Higher loss increases SWR measured at the input to the line
B	Transmission line loss does not affect the SWR measurement
C	Higher loss increases the accuracy of SWR measured at the input to the line
D	Higher loss reduces SWR measured at the input to the line

33. - G9B04

What is the radiation pattern of a dipole antenna in free space in a plane containing the conductor?

Select	Answer
A	It is a figure-eight off both ends of the antenna
B	It is a figure-eight at right angles to the antenna
C	It has a pair of lobes on one side of the antenna and a single lobe on the other side
D	It is a circle (equal radiation in all directions)

34. - G9C04

How does antenna gain in dBi compare to gain stated in dBd for the same antenna?

Select	Answer
A	Gain in dBd is 1.25 dBd lower
B	Gain in dBd is 1.25 dBd higher
C	Gain in dBi is 2.15 dB lower
D	Gain in dBi is 2.15 dB higher

35. - G9D06

Which of the following is an advantage of a log-periodic antenna?

Select	Answer
A	Wide bandwidth
B	Higher gain per element than a Yagi antenna
C	Polarization diversity
D	Harmonic suppression