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

2. - G0B05

Which of the following conditions will cause a ground fault circuit interrupter (GFCI) to disconnect AC power?

Select	Answer
A	All these choices are correct
B	Current flowing from one or more of the hot wires to the neutral wire
C	Overvoltage on the hot wires
D	Current flowing from one or more of the hot wires directly to ground

3. - G1A03

On which of the following bands is image transmission prohibited?

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

4. - G1B01

What is the maximum height above ground for an antenna structure not near a public use airport without requiring notification to the FAA and registration with the FCC?

Select	Answer
A	100 feet
B	250 feet
C	200 feet
D	50 feet

5. - G1C03

What is the maximum bandwidth permitted by FCC rules for amateur radio stations transmitting on USB frequencies in the 60-meter band?

Select	Answer
A	5.6 kHz
B	2.8 kHz
C	1.8 kHz
D	3 kHz

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	Anyone who held an FCC-issued amateur radio license that expired not less than 5 and not more than 15 years ago
C	Only persons who once held an FCC issued Novice, Technician, or Technician Plus license
D	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

7. - G1E06

The frequency allocations of which ITU region apply to radio amateurs operating in North and South America?

Select	Answer
A	Region 2
B	Region 4
C	Region 3
D	Region 1

8. - G2A08

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

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

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	3 kHz to 6 kHz
C	150 Hz to 500 Hz
D	1 kHz to 3 kHz

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

11. - G2D04

Which of the following describes an azimuthal projection map?

Select	Answer
A	A map that shows accurate land masses
B	A map that shows the angle at which an amateur satellite crosses the equator
C	A map that shows true bearings and distances from a specific location
D	A map that shows the number of degrees longitude that an amateur satellite appears to move westward at the equator with each orbit

12. - G2E03

What symptoms may result from other signals interfering with a PACTOR or VARA transmission?

Select	Answer
A	All these choices are correct
B	Failure to establish a connection between stations
C	Frequent retries or timeouts
D	Long pauses in message transmission

13. - G3A05

What is the solar flux index?

Select	Answer
A	A measure of solar radiation with a wavelength of 10.7 centimeters
B	A count of sunspots that is adjusted for solar emissions
C	A measure of the highest frequency that is useful for ionospheric propagation between two points on Earth
D	Another name for the American sunspot number

14. - G3B03

Which frequency will have the least attenuation for long-distance skip propagation?

Select	Answer
A	Just below the MUF
B	Just below the critical frequency
C	Just above the critical frequency
D	Just above the LUF

15. - G3C05

Why is long-distance communication on the 40-, 60-, 80-, and 160-meter bands more difficult during the day?

Select	Answer
A	The D region absorbs signals at these frequencies during daylight hours
B	The E region is unstable during daylight hours
C	The F region is unstable during daylight hours
D	The F region absorbs signals at these frequencies during daylight hours

16. - G4A01

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

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

17. - G4B01

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

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

18. - G4C12

Why must all metal enclosures of station equipment be grounded?

Select	Answer
A	It ensures that the neutral wire is grounded
B	It ensures that hazardous voltages cannot appear on the chassis
C	It prevents a blown fuse in the event of an internal short circuit
D	It prevents signal overload

19. - G4D11

How close to the upper edge of a band’s phone segment should your displayed carrier frequency be when using 3 kHz wide USB?

Select	Answer
A	At least 3 kHz above the edge of the band
B	At least 1 kHz above the edge of the segment
C	At least 3 kHz below the edge of the band
D	At least 1 kHz below the edge of the segment

20. - G4E07

Which of the following may cause receive interference to an HF transceiver installed in a vehicle?

Select	Answer
A	The battery charging system
B	The fuel delivery system
C	The control computers
D	All these choices are correct

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. - G5B07

What value of an AC signal produces the same power dissipation in a resistor as a DC voltage of the same value?

Select	Answer
A	The RMS value
B	The reciprocal of the RMS value
C	The peak value
D	The peak-to-peak value

23. - G5C13

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

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

24. - G6A07

What are the operating points for a bipolar transistor used as a switch?

Select	Answer
A	Saturation and cutoff
B	The active region (between cutoff and saturation)
C	Enhancement and depletion modes
D	Peak and valley current points

25. - G6B07

Which of the following describes a type N connector?

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

26. - G7A13

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

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

27. - G7B06

What is a shift register?

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

28. - G7C09

What is the phase difference between the I and Q RF signals that software-defined radio (SDR) equipment uses for modulation and demodulation?

Select	Answer
A	180 degrees
B	45 degrees
C	90 degrees
D	Zero

29. - G8A09

What type of modulation is used by FT8?

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

30. - G8B07

What is the frequency deviation for a 12.21 MHz reactance modulated oscillator in a 5 kHz deviation, 146.52 MHz FM phone transmitter?

Select	Answer
A	60 kHz
B	101.75 Hz
C	416.7 Hz
D	5 kHz

31. - G8C08

Which of the following statements is true about PSK31?

Select	Answer
A	Upper case letters are sent with more power
B	Error correction is used to ensure accurate message reception
C	Upper case letters use longer Varicode bit sequences and thus slow down transmission
D	Higher power is needed as compared to RTTY for similar error rates

32. - G9A04

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

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

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. - 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. - G9D01

Which of the following antenna types will be most effective as a near vertical incidence skywave (NVIS) antenna for short-skip communications on 40 meters during the day?

Select	Answer
A	A horizontal dipole placed between 1/10 and 1/4 wavelength above the ground
B	A vertical antenna placed between 1/4 and 1/2 wavelength above the ground
C	A vertical dipole placed at approximately 1/2 wavelength above the ground
D	A horizontal dipole placed at approximately 1/2 wavelength above the ground

Figure G7-1