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. - G0A08

Which of the following steps must an amateur operator take to ensure compliance with RF safety regulations?

Select	Answer
A	Post a copy of FCC Part 97.13 in the station
B	Perform a routine RF exposure evaluation and prevent access to any identified high exposure areas
C	All these choices are correct
D	Notify neighbors within a 100-foot radius of the antenna of the existence of the station and power levels

2. - G0B13

Where should lightning arrestors be located?

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

3. - G1A11

When General class licensees are not permitted to use the entire voice portion of a band, which portion of the voice segment is available to them?

Select	Answer
A	The upper frequency portion on frequencies below 7.3 MHz, and the lower portion on frequencies above 14.150 MHz
B	The lower frequency portion on frequencies below 7.3 MHz, and the upper portion on frequencies above 14.150 MHz
C	The upper frequency portion
D	The lower frequency portion

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	50 feet
B	100 feet
C	200 feet
D	250 feet

5. - G1C07

What must be done before using a new digital protocol on the air?

Select	Answer
A	Submit a rule-making proposal to the FCC describing the codes and methods of the technique
B	Obtain an experimental license from the FCC
C	Publicly document the technical characteristics of the protocol
D	Type-certify equipment to FCC standards

6. - G1D09

How long is a Certificate of Successful Completion of Examination (CSCE) valid for exam element credit?

Select	Answer
A	180 days
B	365 days
C	For as long as your current license is valid
D	30 days

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	Under no circumstances
C	Only during an FCC-declared general state of communications emergency
D	Only if the 10-meter repeater control operator holds at least a General class license

8. - G2A08

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

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

9. - G2B03

What is good amateur practice if propagation changes during a contact creating interference from other stations using the frequency?

Select	Answer
A	Advise the interfering stations that you are on the frequency and that you have priority
B	Switch to the opposite sideband
C	Attempt to resolve the interference problem with the other stations in a mutually acceptable manner
D	Decrease power and continue to transmit

10. - G2C08

What prosign is sent to indicate the end of a formal message when using CW?

Select	Answer
A	SK
B	BK
C	KN
D	AR

11. - G2D03

What procedure may be used by Volunteer Monitors to localize a station whose continuous carrier is holding a repeater on in their area?

Select	Answer
A	Compare beam headings on the repeater input from their home locations with that of other Volunteer Monitors
B	Compare vertical and horizontal signal strengths on the input frequency
C	All these choices are correct
D	Compare signal strengths between the input and output of the repeater

12. - G2E12

Which of the following describes Winlink?

Select	Answer
A	A form of Packet Radio
B	All of the above
C	A wireless network capable of both VHF and HF band operation
D	An amateur radio wireless network to send and receive email on the internet

13. - G3A09

How can high geomagnetic activity benefit radio communications?

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

14. - G3B03

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

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

15. - G3C11

Which ionospheric region is the most absorbent of signals below 10 MHz during daylight hours?

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

16. - G4A02

What is the benefit of using the opposite or “reverse” sideband when receiving CW?

Select	Answer
A	Interference from impulse noise will be eliminated
B	More stations can be accommodated within a given signal passband
C	It may be possible to reduce or eliminate interference from other signals
D	Accidental out-of-band operation can be prevented

17. - G4B09

When is an analog multimeter preferred to a digital multimeter?

Select	Answer
A	When testing logic circuits
B	When adjusting circuits for maximum or minimum values
C	When high precision is desired
D	When measuring the frequency of an oscillator

18. - G4C01

Which of the following might be useful in reducing RF interference to audio frequency circuits?

Select	Answer
A	Bypass inductor
B	Reverse-biased diode
C	Bypass capacitor
D	Forward-biased diode

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. - G4E02

What is the purpose of a corona ball on an HF mobile antenna?

Select	Answer
A	To increase the “Q” of the antenna
B	To reduce RF voltage discharge from the tip of the antenna while transmitting
C	To reduce the chance of damage if the antenna should strike an object
D	To narrow the operating bandwidth of the antenna

21. - G5A10

Which of the following devices can be used for impedance matching at radio frequencies?

Select	Answer
A	All these choices are correct
B	A transformer
C	A length of transmission line
D	A Pi-network

22. - G5B02

How does the total current relate to the individual currents in a circuit of parallel resistors?

Select	Answer
A	It decreases as more parallel branches are added to the circuit
B	It equals the sum of the currents through each branch
C	It is the sum of the reciprocal of each individual voltage drop
D	It equals the average of the branch currents

23. - G5C09

What is the capacitance of three 100-microfarad capacitors connected in series?

Select	Answer
A	0.33 microfarads
B	3.0 microfarads
C	33.3 microfarads
D	300 microfarads

24. - G6A10

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

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

25. - G6B04

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

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

26. - G7A07

What is the output waveform of an unfiltered full-wave rectifier connected to a resistive load?

Select	Answer
A	A sine wave at half the frequency of the AC input
B	A series of DC pulses at the same frequency as the AC input
C	A series of DC pulses at twice the frequency of the AC input
D	A steady DC voltage

27. - G7B09

What determines the frequency of an LC oscillator?

Select	Answer
A	The number of stages in the divider
B	The inductance and capacitance in the tank circuit
C	The time delay of the lag circuit
D	The number of stages in the counter

28. - G7C14

The bandwidth of a band-pass filter is measured between what two frequencies?

Select	Answer
A	Pole and zero
B	Upper and lower half-power
C	Cutoff and rolloff
D	Image and harmonic

29. - G8A06

Which of the following is characteristic of QPSK31?

Select	Answer
A	All these choices are correct
B	Its encoding provides error correction
C	Its bandwidth is approximately the same as BPSK31
D	It is sideband sensitive

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	5 kHz
C	8 kHz
D	16 kHz

31. - G8C06

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

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

32. - G9A07

What must be done to prevent standing waves on a feed line connected to an antenna?

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

33. - G9B10

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

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

34. - G9C08

What is meant by the “main lobe” of a directive antenna?

Select	Answer
A	The magnitude of the maximum vertical angle of radiation
B	The direction of maximum radiated field strength from the antenna
C	The point of maximum current in a radiating antenna element
D	The maximum voltage standing wave point on a radiating element

35. - G9D04

What is the primary function of antenna traps?

Select	Answer
A	To provide balanced feed point impedance
B	To enable multiband operation
C	To notch spurious frequencies
D	To prevent out-of-band operation