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 transmitting more than 500 watts PEP
C	All commercial stations; amateur radio stations are exempt
D	Only stations with antennas lower than one wavelength above the ground

2. - G0B10

Which of the following is a danger from lead-tin solder?

Select	Answer
A	High voltages can cause lead-tin solder to disintegrate suddenly
B	Tin in the solder can “cold flow,” causing shorts in the circuit
C	RF energy can convert the lead into a poisonous gas
D	Lead can contaminate food if hands are not washed carefully after handling the solder

3. - G1A08

Which HF bands have segments exclusively allocated to Amateur Extra licensees?

Select	Answer
A	All HF bands except 160 meters and 10 meters
B	80 meters, 40 meters, 20 meters, and 15 meters
C	All HF bands
D	60 meters, 30 meters, 17 meters, and 12 meters

4. - G1B02

With which of the following conditions must beacon stations comply?

Select	Answer
A	All these choices are correct
B	The frequency must be coordinated with the National Beacon Organization
C	No more than one beacon station may transmit in the same band from the same station location
D	The frequency must be posted on the internet or published in a national periodical

5. - G1C11

What measurement is specified by FCC rules that regulate maximum power?

Select	Answer
A	RMS input to the antenna
B	RMS output from the transmitter
C	PEP output from the transmitter
D	PEP input to the antenna

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. - G1E09

Under what circumstances are messages that are sent via digital modes exempt from Part 97 third-party rules that apply to other modes of communication?

Select	Answer
A	When messages are encrypted
B	When messages are not encrypted
C	When under automatic control
D	Under no circumstances

8. - G2A08

What is the recommended way to break into a phone contact?

Select	Answer
A	Say “Breaker Breaker”
B	Say your call sign once
C	Say “QRZ” several times, followed by your call sign
D	Say “CQ” followed by the call sign of either station

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

10. - G2C10

What does the Q signal “QRN” mean?

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

11. - G2D06

How is a directional antenna pointed when making a “long-path” contact with another station?

Select	Answer
A	180 degrees from the station’s short-path heading
B	Toward the rising sun
C	Along the gray line
D	Toward the north

12. - G2E14

What could be wrong if you cannot decode an RTTY or other FSK signal even though it is apparently tuned in properly?

Select	Answer
A	You may be listening on the wrong sideband
B	All these choices are correct
C	You may have selected the wrong baud rate
D	The mark and space frequencies may be reversed

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	4 to 8 minutes
C	14 days
D	28 days

14. - G3B01

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

Select	Answer
A	The signal might be cancelled causing severe attenuation
B	A slightly delayed echo might be heard
C	Signal strength increased by 3 dB
D	Periodic fading approximately every 10 seconds

15. - G3C07

What makes HF scatter signals often sound distorted?

Select	Answer
A	The E region is not present
B	Ground waves are absorbing much of the signal
C	The ionospheric region involved is unstable
D	Energy is scattered into the skip zone through several different paths

16. - G4A07

What happens as a receiver’s noise reduction control level is increased?

Select	Answer
A	Received frequency may shift several kHz
B	Received frequency may become unstable
C	CW signals may become severely attenuated
D	Received signals may become distorted

17. - G4B03

Which of the following is the best instrument to use for checking the keying waveform of a CW transmitter?

Select	Answer
A	An oscilloscope
B	A wavemeter
C	A field strength meter
D	A sidetone monitor

18. - G4C07

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

Select	Answer
A	Solder has too high a dielectric constant to provide adequate lightning protection
B	A soldered joint will likely be destroyed by the heat of a lightning strike
C	All these choices are correct
D	Solder flux will prevent a low conductivity connection

19. - G4D06

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

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

20. - G4E02

What is the purpose of a corona ball on an HF mobile antenna?

Select	Answer
A	To reduce the chance of damage if the antenna should strike an object
B	To increase the “Q” of the antenna
C	To narrow the operating bandwidth of the antenna
D	To reduce RF voltage discharge from the tip of the antenna while transmitting

21. - G5A04

Which of the following is opposition to the flow of alternating current in a capacitor?

Select	Answer
A	Reactance
B	Admittance
C	Reluctance
D	Conductance

22. - G5B07

What value of an AC signal produces the same power dissipation in a resistor as a DC voltage of the same value?

Select	Answer
A	The peak-to-peak value
B	The reciprocal of the RMS value
C	The RMS value
D	The peak value

23. - G5C13

Which of the following components should be added to a capacitor to increase the capacitance?

Select	Answer
A	An inductor in parallel
B	An inductor in series
C	A capacitor in series
D	A capacitor in parallel

24. - G6A11

What happens when an inductor is operated above its self-resonant frequency?

Select	Answer
A	It becomes capacitive
B	Harmonics are generated
C	Its reactance increases
D	Catastrophic failure is likely

25. - G6B02

What is meant by the term MMIC?

Select	Answer
A	Monolithic Microwave Integrated Circuit
B	Metal Monolayer Integrated Circuit
C	Mode Modulated Integrated Circuit
D	Multi-Mode Integrated Circuit

26. - G7A09

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

Select	Answer
A	Symbol 1
B	Symbol 2
C	Symbol 4
D	Symbol 5

27. - G7B06

What is a shift register?

Select	Answer
A	An array of operational amplifiers used for tri-state arithmetic operations
B	A digital mixer
C	A clocked array of circuits that passes data in steps along the array
D	An analog mixer

28. - G7C13

What term specifies a filter’s maximum ability to reject signals outside its passband?

Select	Answer
A	Notch depth
B	Ultimate rejection
C	Insertion loss
D	Rolloff

29. - G8A11

What is the modulation envelope of an AM signal?

Select	Answer
A	Spurious signals that envelop nearby frequencies
B	The bandwidth of the modulated signal
C	The carrier frequency that contains the signal
D	The waveform created by connecting the peak values of the modulated signal

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	Bandwidth is half the symbol rate
D	Lower symbol rates require wider bandwidth

31. - G8C09

Which is true of mesh network microwave nodes?

Select	Answer
A	Links between two nodes in a network may have different frequencies and bandwidths
B	More nodes reduce overall microwave out of band interference
C	Having more nodes increases signal strengths
D	If one node fails, a packet may still reach its target station via an alternate node

32. - G9A02

What is the relationship between high standing wave ratio (SWR) and transmission line loss?

Select	Answer
A	There is no relationship between transmission line loss and SWR
B	High SWR increases loss in a lossy transmission line
C	High SWR makes it difficult to measure transmission line loss
D	High SWR reduces the relative effect of transmission line loss

33. - G9B12

What is the approximate length for a 1/4 wave monopole antenna cut for 28.5 MHz?

Select	Answer
A	21 feet
B	16 feet
C	11 feet
D	8 feet

34. - G9C10

Which of the following can be adjusted to optimize forward gain, front-to-back ratio, or SWR bandwidth of a Yagi antenna?

Select	Answer
A	The physical length of the boom
B	All these choices are correct
C	The spacing of each element along the boom
D	The number of elements on the boom

35. - G9D06

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

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

Figure G7-1