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. - 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	Only stations with antennas lower than one wavelength above the ground
D	All commercial stations; amateur radio stations are exempt

2. - G0B13

Where should lightning arrestors be located?

Select	Answer
A	In series with each ground lead
B	At the closest power pole ground electrode
C	Where the feed lines enter the building
D	On the antenna, opposite the feed point

3. - G1A08

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

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

4. - G1B05

Which of the following one-way transmissions are permitted?

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

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. - G1D01

Who may receive partial credit for the elements represented by an expired amateur radio license?

Select	Answer
A	Any person who previously held an amateur license issued by another country, but only if that country has a current reciprocal licensing agreement with the FCC
B	Any person who can demonstrate that they once held an FCC-issued General, Advanced, or Amateur Extra class license that was not revoked by the FCC
C	Anyone who held an FCC-issued amateur radio license that expired not less than 5 and not more than 15 years ago
D	Only persons who once held an FCC issued Novice, Technician, or Technician Plus license

7. - G1E03

What is required to conduct communications with a digital station operating under automatic control outside the automatic control band segments?

Select	Answer
A	The interrogating transmission must be made by another automatically controlled station
B	The station initiating the contact must be under local or remote control
C	The control operator of the interrogating station must hold an Amateur Extra class license
D	No third-party traffic may be transmitted

8. - G2A04

Which mode is most commonly used for voice communications on the 17- and 12-meter bands?

Select	Answer
A	Suppressed sideband
B	Upper sideband
C	Double sideband
D	Lower sideband

9. - G2B04

When selecting a CW transmitting frequency, what minimum separation from other stations should be used to minimize interference to stations on adjacent frequencies?

Select	Answer
A	5 Hz to 50 Hz
B	150 Hz to 500 Hz
C	3 kHz to 6 kHz
D	1 kHz to 3 kHz

10. - G2C04

What does the Q signal “QRL?” mean?

Select	Answer
A	“Will you keep the frequency clear?”
B	“Are you busy?” or “Is this frequency in use?”
C	“Are you operating full break-in?” or “Can you operate full break-in?”
D	“Are you listening only for a specific station?”

11. - G2D05

Which of the following indicates that you are looking for an HF contact with any station?

Select	Answer
A	Transmit an unmodulated carried for approximately 10 seconds, followed by “this is” and your call sign, and pause to listen -- repeat as necessary
B	Repeat “CQ” a few times, followed by “this is,” then your call sign a few times, then pause to listen, repeat as necessary
C	Sign your call sign once, followed by the words “listening for a call” -- if no answer, change frequency and repeat
D	Say “QTC” followed by “this is” and your call sign -- if no answer, change frequency and repeat

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

13. - G3A01

How does a higher sunspot number affect HF propagation?

Select	Answer
A	A zero sunspot number indicates undisturbed conditions
B	Higher sunspot numbers generally indicate a greater probability of good propagation at higher frequencies
C	Lower sunspot numbers generally indicate greater probability of sporadic E propagation
D	A zero sunspot number indicates that radio propagation is not possible on any band

14. - G3B06

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

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

15. - G3C09

What type of propagation allows signals to be heard in the transmitting station’s skip zone?

Select	Answer
A	Faraday rotation
B	Short-path
C	Chordal hop
D	Scatter

16. - G4A01

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

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

17. - G4B03

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

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

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 “hum” on your station’s transmitted signal
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 harmonic interference from your station

19. - G4D04

What does an S meter measure?

Select	Answer
A	Impedance
B	Transmitter power output
C	Received signal strength
D	Carrier suppression

20. - G4E09

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

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

21. - G5A06

How does a capacitor react to AC?

Select	Answer
A	As the amplitude of the applied AC increases, the reactance increases
B	As the frequency of the applied AC increases, the reactance increases
C	As the frequency of the applied AC increases, the reactance decreases
D	As the amplitude of the applied AC increases, the reactance decreases

22. - G5B10

What percentage of power loss is equivalent to a loss of 1 dB?

Select	Answer
A	20.6 percent
B	10.9 percent
C	25.9 percent
D	12.2 percent

23. - G5C02

What is the output voltage if an input signal is applied to the secondary winding of a 4:1 voltage step-down transformer instead of the primary winding?

Select	Answer
A	Additional resistance must be added in parallel with the secondary to prevent overload
B	The input voltage is divided by 4
C	Additional resistance must be added in series with the primary to prevent overload
D	The input voltage is multiplied by 4

24. - G6A08

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

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

25. - G6B07

Which of the following describes a type N connector?

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

26. - G7A04

What is characteristic of a half-wave rectifier in a power supply?

Select	Answer
A	The ripple frequency is twice that of a full-wave rectifier
B	More current can be drawn from the half-wave rectifier
C	The output voltage is two times the peak input voltage
D	Only one diode is required

27. - G7B08

How is the efficiency of an RF power amplifier determined?

Select	Answer
A	Add the RF input power to the DC output power
B	Divide the RF output power by the DC input power
C	Divide the DC input power by the DC output power
D	Multiply the RF input power by the reciprocal of the RF output power

28. - G7C13

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

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

29. - G8A08

Which of the following is an effect of overmodulation?

Select	Answer
A	Frequency drift
B	Insufficient audio
C	Insufficient bandwidth
D	Excessive bandwidth

30. - G8B06

What is the total bandwidth of an FM phone transmission having 5 kHz deviation and 3 kHz modulating frequency?

Select	Answer
A	3 kHz
B	8 kHz
C	5 kHz
D	16 kHz

31. - G8C11

How are the two separate frequencies of a Frequency Shift Keyed (FSK) signal identified?

Select	Answer
A	High and low
B	Mark and space
C	Dot and dash
D	On and off

32. - G9A11

What is the effect of transmission line loss on SWR measured at the input to the line?

Select	Answer
A	Transmission line loss does not affect the SWR measurement
B	Higher loss reduces SWR measured at the input to the line
C	Higher loss increases the accuracy of SWR measured at the input to the line
D	Higher loss increases SWR measured at the input to the 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	11 feet
C	8 feet
D	16 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 simultaneous vertical and horizontal polarization
B	It narrows the main lobe in azimuth
C	It narrows the main lobe in elevation
D	It allows quick selection of vertical or horizontal polarization