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. - G0A12

What stations are subject to the FCC rules on RF exposure?

Select	Answer
A	All stations with a time-averaged transmission of more than one milliwatt
B	Only stations with antennas lower than one wavelength above the ground
C	All commercial stations; amateur radio stations are exempt
D	Only stations transmitting more than 500 watts PEP

2. - G0B06

Which of the following is covered by the National Electrical Code?

Select	Answer
A	RF exposure limits of the human body
B	Acceptable bandwidth limits
C	Acceptable modulation limits
D	Electrical safety of the station

3. - G1A04

Which of the following amateur bands is restricted to communication only on specific channels, rather than frequency ranges?

Select	Answer
A	11 meters
B	60 meters
C	30 meters
D	12 meters

4. - G1B04

Which of the following transmissions is permitted for all amateur stations?

Select	Answer
A	Occasional retransmission of weather and propagation forecast information from US government stations
B	Automatic retransmission of other amateur signals by any amateur station
C	Unidentified transmissions of less than 10 seconds duration for test purposes only
D	Encrypted messages, if not intended to facilitate a criminal act

5. - G1C02

What is the maximum transmitter power an amateur station may use on the 12-meter band?

Select	Answer
A	An effective radiated power equivalent to 100 watts from a half-wave dipole
B	1500 watts PEP output
C	50 watts PEP output
D	200 watts PEP output

6. - G1D05

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

Select	Answer
A	A US operator/primary station license
B	Only a license from the foreign country, as long as the call sign includes identification of portable operation in the US
C	Only an appropriate US operator/primary license and a special remote station permit from the FCC
D	A license from the foreign country and a special remote station permit from the FCC

7. - G1E11

On what bands may automatically controlled stations transmitting RTTY or data emissions communicate with other automatically controlled digital stations?

Select	Answer
A	On any band segment where digital operation is permitted
B	Anywhere in the non-phone segments of the 10-meter or shorter wavelength bands
C	Only in the non-phone Extra Class segments of the bands
D	Anywhere in the 6-meter or shorter wavelength bands, and in limited segments of some of the HF bands

8. - G2A05

Which mode of voice communication is most commonly used on the HF amateur bands?

Select	Answer
A	Frequency modulation
B	Double sideband
C	Single sideband
D	Single phase modulation

9. - G2B09

Who may be the control operator of an amateur station transmitting in RACES to assist relief operations during a disaster?

Select	Answer
A	Any control operator when normal communication systems are operational
B	Only a RACES net control operator
C	A person holding an FCC-issued amateur operator license or an appropriate government official
D	Only a person holding an FCC-issued amateur operator license

10. - G2C10

What does the Q signal “QRN” mean?

Select	Answer
A	I am troubled by static
B	Zero beat my signal
C	Send more slowly
D	Stop sending

11. - G2D02

Which of the following are objectives of the Volunteer Monitor Program?

Select	Answer
A	To provide emergency and public safety communications
B	To coordinate repeaters for efficient and orderly spectrum usage
C	To encourage amateur radio operators to self-regulate and comply with the rules
D	To conduct efficient and orderly amateur licensing examinations

12. - G2E07

Which of the following is required when using FT8?

Select	Answer
A	Computer time accurate to within approximately 1 second
B	A vertically polarized antenna
C	A special hardware modem
D	Receiver attenuator set to -12 dB

13. - G3A08

How can a geomagnetic storm affect HF propagation?

Select	Answer
A	Degrade high-latitude HF propagation
B	Improve ground wave propagation
C	Degrade ground wave propagation
D	Improve high-latitude HF propagation

14. - G3B10

What is the approximate maximum distance along the Earth’s surface normally covered in one hop using the E region?

Select	Answer
A	2,500 miles
B	180 miles
C	1,200 miles
D	12,000 miles

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 E region is unstable during daylight hours
B	The F region absorbs signals at these frequencies during daylight hours
C	The F region is unstable during daylight hours
D	The D 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 redirecting noise pulses into a filter capacitor
C	By temporarily increasing received bandwidth
D	By clipping noise peaks

17. - G4B01

What item of test equipment contains horizontal and vertical channel amplifiers?

Select	Answer
A	An ammeter
B	An ohmmeter
C	A signal generator
D	An oscilloscope

18. - G4C06

What is a possible effect of a resonant ground connection?

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

19. - G4D06

How much change in signal strength is typically represented by one S unit?

Select	Answer
A	18 dB
B	15 dB
C	12 dB
D	6 dB

20. - G4E03

Which of the following direct, fused power connections would be the best for a 100-watt HF mobile installation?

Select	Answer
A	To the alternator or generator using insulated heavy duty balanced transmission line
B	To the battery using heavy-gauge wire
C	To the battery using insulated heavy duty balanced transmission line
D	To the alternator or generator using heavy-gauge wire

21. - G5A11

What letter is used to represent reactance?

Select	Answer
A	Y
B	B
C	Z
D	X

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. - G5C03

What is the total resistance of a 10-, a 20-, and a 50-ohm resistor connected in parallel?

Select	Answer
A	0.17 ohms
B	5.9 ohms
C	80 ohms
D	17 ohms

24. - G6A01

What is the minimum allowable discharge voltage for maximum life of a standard 12-volt lead-acid battery?

Select	Answer
A	12 volts
B	6 volts
C	8.5 volts
D	10.5 volts

25. - G6B03

Which of the following is an advantage of CMOS integrated circuits compared to TTL integrated circuits?

Select	Answer
A	High power handling capability
B	Low power consumption
C	Better suited for RF amplification
D	Better suited for power supply regulation

26. - G7A11

Which symbol in figure G7-1 represents an NPN junction transistor?

Select	Answer
A	Symbol 2
B	Symbol 7
C	Symbol 11
D	Symbol 1

27. - G7B11

For which of the following modes is a Class C power stage appropriate for amplifying a modulated signal?

Select	Answer
A	AM
B	FM
C	SSB
D	All these choices are correct

28. - G7C06

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

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

29. - G8A02

What is the name of the process that changes the phase angle of an RF signal to convey information?

Select	Answer
A	Phase inversion
B	Phase convolution
C	Phase modulation
D	Phase transformation

30. - G8B10

What is the relationship between transmitted symbol rate and bandwidth?

Select	Answer
A	Higher symbol rates require wider bandwidth
B	Symbol rate and bandwidth are not related
C	Lower symbol rates require wider bandwidth
D	Bandwidth is half the symbol rate

31. - G8C05

In an ARQ mode, what is meant by a NAK response to a transmitted packet?

Select	Answer
A	Packet was received without error
B	Entire file received correctly
C	Receiving station connected and ready for transmissions
D	Request retransmission of the packet

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

33. - G9B10

What is the approximate length for a 1/2 wave dipole antenna cut for 14.250 MHz?

Select	Answer
A	8 feet
B	24 feet
C	33 feet
D	16 feet

34. - G9C05

What is the primary effect of increasing boom length and adding directors to a Yagi antenna?

Select	Answer
A	Gain increases
B	Resonant frequency is lower
C	Beamwidth increases
D	Front-to-back ratio decreases

35. - G9D04

What is the primary function of antenna traps?

Select	Answer
A	To notch spurious frequencies
B	To enable multiband operation
C	To prevent out-of-band operation
D	To provide balanced feed point impedance

Figure G7-1