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

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	Lead can contaminate food if hands are not washed carefully after handling the solder
C	RF energy can convert the lead into a poisonous gas
D	Tin in the solder can “cold flow,” causing shorts in the circuit

3. - G1A03

On which of the following bands is image transmission prohibited?

Select	Answer
A	12 meters
B	30 meters
C	20 meters
D	160 meters

4. - G1B03

Which of the following is a purpose of a beacon station as identified in the FCC rules?

Select	Answer
A	Observation of propagation and reception
B	Transmission of bulletins of general interest to amateur radio licensees
C	Automatic identification of repeaters
D	All these choices are correct

5. - G1C10

What is the maximum symbol rate permitted for RTTY or data emission transmissions on the 10-meter band?

Select	Answer
A	19.6 kilobaud
B	56 kilobaud
C	1200 baud
D	300 baud

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

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

8. - G2A12

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

Select	Answer
A	Attenuator level
B	RF clipping level
C	Antenna inductance or capacitance
D	Transmit audio or microphone gain

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

10. - G2C05

What is the best speed to use when answering a CQ in Morse code?

Select	Answer
A	At the standard calling speed of 10 wpm
B	The fastest speed at which you are comfortable copying, but no faster than the CQ
C	The fastest speed at which you are comfortable copying, but no slower than the CQ
D	At the standard calling speed of 5 wpm

11. - G2D01

What is the Volunteer Monitor Program?

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

12. - G2E02

What is VARA?

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

13. - G3A03

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

Select	Answer
A	8 minutes
B	20 to 40 hours
C	1 to 2 hours
D	28 days

14. - G3B08

What does MUF stand for?

Select	Answer
A	The Maximum Usable Frequency for communications between two points
B	The Maximum Usable Frequency during a 24-hour period
C	The Minimum Usable Frequency for communications between two points
D	The Minimum Usable Frequency during a 24-hour period

15. - G3C10

What is near vertical incidence skywave (NVIS) propagation?

Select	Answer
A	Long path HF propagation at sunrise and sunset
B	Double hop propagation near the LUF
C	Short distance MF or HF propagation at high elevation angles
D	Propagation near the MUF

16. - G4A06

What is the purpose of an antenna tuner?

Select	Answer
A	Reduce the power dissipation in the feedline to the antenna
B	Reduce the SWR in the feed line to the antenna
C	Increase power transfer from the transmitter to the feed line
D	All these choices are correct

17. - G4B10

Which of the following can be determined with a directional wattmeter?

Select	Answer
A	Antenna front-to-back ratio
B	Radio wave propagation
C	Standing wave ratio
D	RF interference

18. - G4C08

Which of the following would reduce RF interference caused by common-mode current on an audio cable?

Select	Answer
A	Ground the center conductor of the audio cable causing the interference
B	Connect the center conductor to the shield of all cables to short circuit the RFI signal
C	Add an additional insulating jacket to the cable
D	Place a ferrite choke on the cable

19. - G4D06

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

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

20. - G4E11

What precaution should be taken when connecting a solar panel to a lithium iron phosphate battery?

Select	Answer
A	Ground the solar panel outer metal framework
B	The solar panel must have a charge controller
C	Ensure the battery is placed terminals-up
D	A series resistor must be in place

21. - G5A08

What is impedance?

Select	Answer
A	The ratio of current to voltage
B	The product of current and reactance
C	The product of current and voltage
D	The ratio of voltage to current

22. - G5B08

What is the peak-to-peak voltage of a sine wave with an RMS voltage of 120 volts?

Select	Answer
A	240.0 volts
B	169.7 volts
C	339.4 volts
D	84.8 volts

23. - G5C13

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

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

24. - G6A10

Which element of a vacuum tube regulates the flow of electrons between cathode and plate?

Select	Answer
A	Suppressor grid
B	Control grid
C	Trigger electrode
D	Screen grid

25. - G6B04

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

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

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. - G7B05

How many states does a 3-bit binary counter have?

Select	Answer
A	3
B	8
C	6
D	16

28. - G7C08

Which parameter affects receiver sensitivity?

Select	Answer
A	All these choices are correct
B	Input amplifier noise figure
C	Input amplifier gain
D	Demodulator stage bandwidth

29. - G8A13

What is a link budget?

Select	Answer
A	The sum of antenna gains minus system losses
B	The sum of transmit power and antenna gains minus system losses as seen at the receiver
C	The difference between transmit power and receiver sensitivity
D	The financial costs associated with operating a radio link

30. - G8B09

Why is it good to match receiver bandwidth to the bandwidth of the operating mode?

Select	Answer
A	It minimizes power consumption in the receiver
B	It improves impedance matching of the antenna
C	It is required by FCC rules
D	It results in the best signal-to-noise ratio

31. - G8C06

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

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

32. - G9A04

What causes reflected power at an antenna’s feed point?

Select	Answer
A	Feeding the antenna with unbalanced feed line
B	Operating an antenna at its resonant frequency
C	A difference between feed line impedance and antenna feed point impedance
D	Using more transmitter power than the antenna can handle

33. - G9B11

What is the approximate length for a 1/2 wave dipole antenna cut for 3.550 MHz?

Select	Answer
A	84 feet
B	263 feet
C	132 feet
D	42 feet

34. - G9C11

What is a beta or hairpin match?

Select	Answer
A	A 1/4 wavelength section of 75-ohm coax in series with the feed point of a Yagi to provide impedance matching
B	A shorted transmission line stub placed at the feed point of a Yagi antenna to provide impedance matching
C	A section of 300-ohm twin-lead transmission line used to match a folded dipole antenna
D	A series capacitor selected to cancel the inductive reactance of a folded dipole antenna

35. - G9D08

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

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

Figure G7-1