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

Anonymous User

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

Logging in (or registering) will help the system to select questions that you need to focus on.

1. - G0A04

What does “time averaging” mean when evaluating RF radiation exposure?

Select	Answer
A	The average amount of power developed by the transmitter over a specific 24-hour period
B	The total RF exposure averaged over a certain period
C	The average time it takes RF radiation to have any long-term effect on the body
D	The total time of the exposure

2. - G0B04

Where should the station’s lightning protection ground system be located?

Select	Answer
A	As close to the station equipment as possible
B	Next to the closest power pole
C	Parallel to the water supply line
D	Outside the building

3. - G1A02

On which of the following bands is phone operation prohibited?

Select	Answer
A	30 meters
B	17 meters
C	12 meters
D	160 meters

4. - G1B05

Which of the following one-way transmissions are permitted?

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

5. - G1C11

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

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

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 license from the foreign country and a special remote station permit from the FCC
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 US operator/primary station license

7. - G1E10

Why should an amateur operator normally avoid transmitting on 14.100, 18.110, 21.150, 24.930 and 28.200 MHz?

Select	Answer
A	A system of automatic digital stations operates on those frequencies
B	A system of propagation beacon stations operates on those frequencies
C	These frequencies are set aside for emergency operations
D	These frequencies are set aside for bulletins from the FCC

8. - G2A07

Which of the following statements is true of single sideband (SSB)?

Select	Answer
A	SSB is the only voice mode authorized on the 160-, 75-, and 40-meter amateur bands
B	Only one sideband is transmitted; the other sideband and carrier are suppressed
C	SSB is the only voice mode authorized on the 20-, 15-, and 10-meter amateur bands
D	Only one sideband and the carrier are transmitted; the other sideband is suppressed

9. - G2B05

When selecting an SSB transmitting frequency, what minimum separation should be used to minimize interference to stations on adjacent frequencies?

Select	Answer
A	5 Hz to 50 Hz
B	2 kHz to 3 kHz
C	150 Hz to 500 Hz
D	Approximately 6 kHz

10. - G2C11

What does the Q signal “QRV” mean?

Select	Answer
A	I am quitting for the day
B	I am ready to receive
C	There is interference on the frequency
D	You are sending too fast

11. - G2D11

Why are signal reports typically exchanged at the beginning of an HF contact?

Select	Answer
A	To be sure the contact will count for award programs
B	To allow each station to calibrate their frequency display
C	To allow each station to operate according to conditions
D	To follow standard radiogram structure

12. - G2E15

Which of the following is a common location for FT8?

Select	Answer
A	Approximately 14.110 MHz to 14.113 MHz
B	Anywhere in the CW portion of the band
C	Approximately 14.074 MHz to 14.077 MHz
D	Anywhere in the voice portion of the band

13. - G3A09

How can high geomagnetic activity benefit radio communications?

Select	Answer
A	Reduce long delayed echoes
B	Increases signal strength for HF signals passing through the polar regions
C	Creates auroras that can reflect VHF signals
D	Improve HF long path propagation

14. - G3B04

Which of the following is a way to determine current propagation on a desired band from your station?

Select	Answer
A	All these choices are correct
B	Use a network of automated receiving stations on the internet to see where your transmissions are being received
C	Send a series of dots and listen for echoes
D	Check the A-index

15. - G3C01

Which ionospheric region is closest to the surface of Earth?

Select	Answer
A	The F1 region
B	The F2 region
C	The E region
D	The D region

16. - G4A01

What is the purpose of the notch filter found on many HF transceivers?

Select	Answer
A	To remove interfering splatter generated by signals on adjacent frequencies
B	To restrict the transmitter voice bandwidth
C	To reduce interference from carriers in the receiver passband
D	To eliminate receiver interference from impulse noise sources

17. - G4B01

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

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

18. - G4C11

What technique helps to minimize RF “hot spots” in an amateur station?

Select	Answer
A	Bonding all equipment enclosures together
B	Building all equipment in a metal enclosure
C	Using surge suppressor power outlets
D	Placing low-pass filters on all feed lines

19. - G4D05

How does a signal that reads 20 dB over S9 compare to one that reads S9 on a receiver, assuming a properly calibrated S meter?

Select	Answer
A	It is 20 times more powerful
B	It is 10 times less powerful
C	It is 20 times less powerful
D	It is 100 times more powerful

20. - G4E05

Which of the following most limits an HF mobile installation?

Select	Answer
A	Efficiency of the electrically short antenna
B	“Picket fencing”
C	The wire gauge of the DC power line to the transceiver
D	FCC rules limiting mobile output power on the 75-meter band

21. - G5A12

What occurs in an LC circuit at resonance?

Select	Answer
A	Current and voltage are equal
B	Inductive reactance and capacitive reactance cancel
C	The circuit radiates all its energy in the form of radio waves
D	Resistance is cancelled

22. - G5B12

What is the RMS voltage across a 50-ohm dummy load dissipating 1200 watts?

Select	Answer
A	346 volts
B	692 volts
C	173 volts
D	245 volts

23. - G5C07

What transformer turns ratio matches an antenna’s 600-ohm feed point impedance to a 50-ohm coaxial cable?

Select	Answer
A	12 to 1
B	3.5 to 1
C	144 to 1
D	24 to 1

24. - G6A08

Which of the following is characteristic of low voltage ceramic capacitors?

Select	Answer
A	Tight tolerance
B	Comparatively low cost
C	High stability
D	High capacitance for given volume

25. - G6B07

Which of the following describes a type N connector?

Select	Answer
A	A small bayonet connector used for data circuits
B	A low noise figure VHF connector
C	A moisture-resistant RF connector useful to 10 GHz
D	A nickel plated version of the PL-259

26. - G7A09

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

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

27. - G7B01

What is the purpose of neutralizing an amplifier?

Select	Answer
A	To cut off the final amplifier during standby periods
B	To limit the modulation index
C	To eliminate self-oscillations
D	To keep the carrier on frequency

28. - G7C06

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

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

29. - G8A09

What type of modulation is used by FT8?

Select	Answer
A	Amplitude compressed AM
B	8-tone frequency shift keying
C	8-bit direct sequence spread spectrum
D	Vestigial sideband

30. - G8B10

What is the relationship between transmitted symbol rate and bandwidth?

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

31. - G8C03

What part of a packet radio frame contains the routing and handling information?

Select	Answer
A	Directory
B	Trailer
C	Header
D	Preamble

32. - G9A02

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

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

33. - G9B10

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

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

34. - G9C01

Which of the following would increase the bandwidth of a Yagi antenna?

Select	Answer
A	Tapered-diameter elements
B	Larger-diameter elements
C	Closer element spacing
D	Loading coils in series with the element

35. - G9D05

What is an advantage of vertically stacking horizontally polarized Yagi antennas?

Select	Answer
A	It allows quick selection of vertical or horizontal polarization
B	It allows simultaneous vertical and horizontal polarization
C	It narrows the main lobe in elevation
D	It narrows the main lobe in azimuth

Figure G7-1