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. - G0A03

How can you determine that your station complies with FCC RF exposure regulations?

Select	Answer
A	All these choices are correct
B	By calculation based on FCC OET Bulletin 65
C	By measurement of field strength using calibrated equipment
D	By calculation based on computer modeling

2. - G0B11

Which of the following is required for lightning protection ground rods?

Select	Answer
A	They must be bonded together with all other grounds
B	Lightning grounds must be connected to all ungrounded wiring
C	Bends in ground wires must be made as close as possible to a right angle
D	They must be bonded to all buried water and gas lines

3. - G1A04

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

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

4. - G1B04

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

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

5. - G1C06

What is the limit for transmitter power on the 1.8 MHz band?

Select	Answer
A	1000 watts PEP output
B	1500 watts PEP output
C	1200 watts PEP output
D	200 watts PEP output

6. - G1D10

What is the minimum age that one must be to qualify as an accredited Volunteer Examiner?

Select	Answer
A	18 years
B	There is no age limit
C	21 years
D	16 years

7. - G1E02

When may a 10-meter repeater retransmit the 2-meter signal from a station that has a Technician class control operator?

Select	Answer
A	Under no circumstances
B	Only during an FCC-declared general state of communications emergency
C	Only if the station on 10-meters is operating under a Special Temporary Authorization allowing such retransmission
D	Only if the 10-meter repeater control operator holds at least a General class license

8. - G2A08

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

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

9. - G2B01

Which of the following is true concerning access to frequencies?

Select	Answer
A	QSOs in progress have priority
B	Contest operations should yield to non-contest use of frequencies
C	Except during emergencies, no amateur station has priority access to any frequency
D	Nets have priority

10. - G2C01

Which of the following describes full break-in CW operation (QSK)?

Select	Answer
A	Transmitting stations can receive between code characters and elements
B	Automatic keyers, instead of hand keys, are used to send Morse code
C	Breaking stations send the Morse code prosign “BK”
D	An operator must activate a manual send/receive switch before and after every transmission

11. - G2D01

What is the Volunteer Monitor Program?

Select	Answer
A	Amateur volunteers who are formally enlisted to monitor the airwaves for rules violations
B	Amateur volunteers who conduct frequency coordination for amateur VHF repeaters
C	Amateur volunteers who conduct amateur licensing examinations
D	Amateur volunteers who use their station equipment to help civil defense organizations in times of emergency

12. - G2E01

Which mode is normally used when sending RTTY signals via AFSK with an SSB transmitter?

Select	Answer
A	CW
B	DSB
C	USB
D	LSB

13. - G3A06

What is a geomagnetic storm?

Select	Answer
A	A temporary disturbance in Earth’s geomagnetic field
B	A sudden drop in the solar flux index
C	A thunderstorm that affects radio propagation
D	Ripples in the geomagnetic force

14. - G3B06

What usually happens to radio waves with frequencies below the LUF?

Select	Answer
A	They pass through the ionosphere
B	They are attenuated before reaching the destination
C	They are refracted and trapped in the ionosphere to circle Earth
D	They are refracted back to Earth

15. - G3C08

Why are HF scatter signals in the skip zone usually weak?

Select	Answer
A	Only a small part of the signal energy is scattered into the skip zone
B	Propagation is via ground waves, which absorb most of the signal energy
C	Propagation is via ducts in the F region, which absorb most of the energy
D	Signals are scattered from the magnetosphere, which is not a good reflector

16. - G4A08

What is the correct adjustment for the LOAD or COUPLING control of a vacuum tube RF power amplifier?

Select	Answer
A	Desired power output without exceeding maximum allowable plate current
B	Highest plate voltage while minimizing grid current
C	Minimum SWR on the antenna
D	Minimum plate current without exceeding maximum allowable grid current

17. - G4B08

What transmitter performance parameter does a two-tone test analyze?

Select	Answer
A	Linearity
B	Percentage of suppression of the carrier and undesired sideband for SSB
C	Percentage of frequency modulation
D	Percentage of carrier phase shift

18. - G4C10

What could be a symptom caused by a ground loop in your station’s audio connections?

Select	Answer
A	You receive reports of harmonic interference from your station
B	An item of station equipment starts to draw excessive amounts of current
C	The SWR reading for one or more antennas is suddenly very high
D	You receive reports of “hum” on your station’s transmitted signal

19. - G4D07

How much must the power output of a transmitter be raised to change the S meter reading on a distant receiver from S8 to S9?

Select	Answer
A	Approximately 2 times
B	Approximately 4 times
C	Approximately 8 times
D	Approximately 1.5 times

20. - G4E09

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

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

21. - G5A07

What is the term for the inverse of impedance?

Select	Answer
A	Susceptance
B	Conductance
C	Admittance
D	Reluctance

22. - G5B04

How many watts of electrical power are consumed by a 12 VDC light bulb that draws 0.2 amperes?

Select	Answer
A	6 watts
B	2.4 watts
C	24 watts
D	60 watts

23. - G5C01

What causes a voltage to appear across the secondary winding of a transformer when an AC voltage source is connected across its primary winding?

Select	Answer
A	Mutual inductance
B	Displacement current coupling
C	Capacitive coupling
D	Mutual capacitance

24. - G6A05

What is the approximate forward threshold voltage of a silicon junction diode?

Select	Answer
A	0.3 volts
B	1.0 volts
C	0.1 volt
D	0.7 volts

25. - G6B04

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

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

26. - G7A13

Which symbol in Figure G7-1 represents a tapped inductor?

Select	Answer
A	Symbol 1
B	Symbol 6
C	Symbol 11
D	Symbol 7

27. - G7B09

What determines the frequency of an LC oscillator?

Select	Answer
A	The number of stages in the counter
B	The inductance and capacitance in the tank circuit
C	The number of stages in the divider
D	The time delay of the lag circuit

28. - G7C04

How is a product detector used?

Select	Answer
A	Used in a single sideband receiver to extract the modulated signal
B	Used in transmitter to perform frequency multiplication
C	Used in test gear to detect spurious mixing products
D	Used in an FM receiver to filter out unwanted sidebands

29. - G8A06

Which of the following is characteristic of QPSK31?

Select	Answer
A	All these choices are correct
B	Its encoding provides error correction
C	It is sideband sensitive
D	Its bandwidth is approximately the same as BPSK31

30. - G8B12

What process combines two signals in a non-linear circuit to produce unwanted spurious outputs?

Select	Answer
A	Intermodulation
B	Rolloff
C	Detection
D	Heterodyning

31. - G8C15

What does an FT8 signal report of +3 mean?

Select	Answer
A	The signal is 3 dB over S9
B	The signal is S3 (weak signals)
C	The signal is 3 times the noise level of an equivalent SSB signal
D	The signal-to-noise ratio is equivalent to +3dB in a 2.5 kHz bandwidth

32. - G9A07

What must be done to prevent standing waves on a feed line connected to an antenna?

Select	Answer
A	The feed line must be an even number of physical half wavelengths long
B	The antenna feed point must be at DC ground potential
C	The feed line must be an odd number of electrical quarter wavelengths long
D	The antenna feed point impedance must be matched to the characteristic impedance of the feed line

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	8 feet
D	11 feet

34. - G9C07

What does “front-to-back ratio” mean in reference to a Yagi antenna?

Select	Answer
A	The ratio of forward gain to dipole gain
B	The power radiated in the major lobe compared to that in the opposite direction
C	The number of directors versus the number of reflectors
D	The relative position of the driven element with respect to the reflectors and directors

35. - G9D08

How does a “screwdriver” mobile antenna adjust its feed point impedance?

Select	Answer
A	By extending and retracting the whip
B	By varying its body capacitance
C	By varying the base loading inductance
D	By deploying a capacitance hat

Figure G7-1