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. - G0A09

What type of instrument can be used to accurately measure an RF field strength?

Select	Answer
A	A calibrated field strength meter with a calibrated antenna
B	A receiver with digital signal processing (DSP) noise reduction
C	An SWR meter with a peak-reading function
D	An oscilloscope with a high-stability crystal marker generator

2. - G0B01

Which wire or wires in a four-conductor 240 VAC circuit should be attached to fuses or circuit breakers?

Select	Answer
A	Only the hot wires
B	Only the ground wire
C	Only the neutral wire
D	All wires

3. - G1A04

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

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

4. - G1B09

On what HF frequencies are automatically controlled beacons permitted?

Select	Answer
A	On any frequency if power is less than 1 watt
B	28.20 MHz to 28.30 MHz
C	On any frequency if transmissions are in Morse code
D	21.08 MHz to 21.09 MHz

5. - G1C08

What is the maximum symbol rate permitted for RTTY or data emission transmitted at frequencies below 28 MHz?

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

6. - G1D11

What action is required to obtain a new General class license after a previously held license has expired and the two-year grace period has passed?

Select	Answer
A	They must have a letter from the FCC showing they once held an amateur or commercial license
B	There are no requirements other than being able to show a copy of the expired license
C	Contact the FCC to have the license reinstated
D	The applicant must show proof of the appropriate expired license grant and pass the current Element 2 exam

7. - G1E08

What is the maximum PEP output allowed for spread spectrum transmissions?

Select	Answer
A	10 watts
B	100 watts
C	100 milliwatts
D	1500 watts

8. - G2A10

Which of the following statements is true of VOX operation versus PTT operation?

Select	Answer
A	It provides more power output
B	It occupies less bandwidth
C	The received signal is more natural sounding
D	It allows “hands free” operation

9. - G2B11

How often may RACES training drills and tests be routinely conducted without special authorization?

Select	Answer
A	No more than 2 hours per week
B	No more than 2 hours per month
C	No more than 1 hour per month
D	No more than 1 hour per week

10. - G2C09

What does the Q signal “QSL” mean?

Select	Answer
A	We have worked before
B	I have received and understood
C	Send slower
D	We have already confirmed the contact

11. - G2D05

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

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

12. - G2E15

Which of the following is a common location for FT8?

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

13. - G3A07

At what point in the solar cycle does the 20-meter band usually support worldwide propagation during daylight hours?

Select	Answer
A	Only at the minimum point
B	At any point
C	At the summer solstice
D	Only at the maximum point

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. - G3C06

What is a characteristic of HF scatter?

Select	Answer
A	Signals have a fluttering sound
B	Phone signals have high intelligibility
C	There are very large, sudden swings in signal strength
D	Scatter propagation occurs only at night

16. - G4A06

What is the purpose of an antenna tuner?

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

17. - G4B05

Why do voltmeters have high input impedance?

Select	Answer
A	It decreases the loading on circuits being measured
B	It improves the resolution of the readings
C	It allows for higher voltages to be safely measured
D	It improves the frequency response

18. - G4C08

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

Select	Answer
A	Place a ferrite choke on the cable
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	Ground the center conductor of the audio cable causing the interference

19. - G4D01

What is the purpose of a speech processor in a transceiver?

Select	Answer
A	Decrease high-frequency voice output to prevent out-of-band operation
B	Increase the apparent loudness of transmitted voice signals
C	Prevent distortion of voice signals
D	Increase transmitter bass response for more natural-sounding SSB signals

20. - G4E03

Which of the following direct, fused power connections would be the best for a 100-watt HF mobile installation?

Select	Answer
A	To the alternator or generator using insulated heavy duty balanced transmission line
B	To the battery using insulated heavy duty balanced transmission line
C	To the battery using heavy-gauge wire
D	To the alternator or generator using heavy-gauge wire

21. - G5A05

How does an inductor react to AC?

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

22. - G5B08

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

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

23. - G5C05

Why is the primary winding wire of a voltage step-up transformer usually a larger size than that of the secondary winding?

Select	Answer
A	To prevent parasitic oscillations due to resistive losses in the primary
B	To accommodate the higher current of the primary
C	To ensure that the volume of the primary winding is equal to the volume of the secondary winding
D	To improve the coupling between the primary and secondary

24. - G6A08

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

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

25. - G6B05

What is an advantage of using a ferrite core toroidal inductor?

Select	Answer
A	Most of the magnetic field is contained in the core
B	Large values of inductance may be obtained
C	The magnetic properties of the core may be optimized for a specific range of frequencies
D	All these choices are correct

26. - G7A13

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

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

27. - G7B06

What is a shift register?

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

28. - G7C04

How is a product detector used?

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

29. - G8A09

What type of modulation is used by FT8?

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

30. - G8B13

Which of the following is an odd-order intermodulation product of frequencies F1 and F2?

Select	Answer
A	5F1-3F2
B	3F1-F2
C	2F1-F2
D	All these choices are correct

31. - G8C09

Which is true of mesh network microwave nodes?

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

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

33. - G9B07

How does the feed point impedance of a horizontal 1/2 wave dipole antenna change as the antenna height is reduced to 1/10 wavelength above ground?

Select	Answer
A	It peaks at about 1/8 wavelength above ground
B	It is unaffected by the height above ground
C	It steadily increases
D	It steadily decreases

34. - G9C12

Which of the following is a characteristic of using a gamma match with a Yagi antenna?

Select	Answer
A	It does not require the driven element to be insulated from the boom
B	All these choices are correct
C	It is useful for matching multiband antennas
D	It does not require any inductors or capacitors

35. - G9D02

What is the feed point impedance of an end-fed half-wave antenna?

Select	Answer
A	Approximately 300 ohms
B	Very low
C	Very high
D	Approximately 50 ohms

Figure G7-1