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	Only stations transmitting more than 500 watts PEP
B	All stations with a time-averaged transmission of more than one milliwatt
C	Only stations with antennas lower than one wavelength above the ground
D	All commercial stations; amateur radio stations are exempt

2. - G0B08

What should be done before climbing a tower that supports electrically powered devices?

Select	Answer
A	All these choices are correct
B	Unground the base of the tower
C	Make sure all circuits that supply power to the tower are locked out and tagged
D	Notify the electric company that a person will be working on the tower

3. - G1A03

On which of the following bands is image transmission prohibited?

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

4. - G1B07

What are the restrictions on the use of abbreviations or procedural signals in the amateur service?

Select	Answer
A	Only “Q” signals are permitted
B	They are not permitted
C	They are limited to those expressly listed in Part 97 of the FCC rules
D	They may be used if they do not obscure the meaning of a message

5. - G1C01

What is the maximum transmitter power an amateur station may use on 10.140 MHz?

Select	Answer
A	1000 watts PEP output
B	2000 watts PEP output
C	200 watts PEP output
D	1500 watts PEP output

6. - G1D04

Who must observe the administration of a Technician class license examination?

Select	Answer
A	At least three Volunteer Examiners of Technician class
B	At least three Volunteer Examiners of General class or higher
C	At least two Volunteer Examiners of Technician class or higher
D	At least two Volunteer Examiners of General class or higher

7. - G1E07

In what part of the 2.4 GHz band may an amateur station communicate with non-licensed Wi-Fi stations?

Select	Answer
A	Channels 1 through 4
B	Channels 42 through 45
C	Anywhere in the band
D	No part

8. - G2A02

Which mode is most commonly used for voice communications on the 160-, 75-, and 40-meter bands?

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

9. - G2B02

What is the first thing you should do if you are communicating with another amateur station and hear a station in distress break in?

Select	Answer
A	Immediately decrease power to avoid interfering with the station in distress
B	Acknowledge the station in distress and determine what assistance may be needed
C	Immediately cease all transmissions
D	Inform your local emergency coordinator

10. - G2C07

When sending CW, what does a “C” mean when added to the RST report?

Select	Answer
A	Key clicks
B	Report was read from an S meter rather than estimated
C	100 percent copy
D	Chirpy or unstable signal

11. - G2D02

Which of the following are objectives of the Volunteer Monitor Program?

Select	Answer
A	To provide emergency and public safety communications
B	To coordinate repeaters for efficient and orderly spectrum usage
C	To conduct efficient and orderly amateur licensing examinations
D	To encourage amateur radio operators to self-regulate and comply with the rules

12. - G2E08

In what segment of the 20-meter band are most digital mode operations commonly found?

Select	Answer
A	At the top of the SSB phone segment, near 14.325 MHz
B	Between 14.070 MHz and 14.100 MHz
C	At the bottom of the slow-scan TV segment, near 14.230 MHz
D	In the middle of the CW segment, near 14.100 MHz

13. - G3A08

How can a geomagnetic storm affect HF propagation?

Select	Answer
A	Degrade ground wave propagation
B	Improve high-latitude HF propagation
C	Degrade high-latitude HF propagation
D	Improve ground wave propagation

14. - G3B01

What is a characteristic of skywave signals arriving at your location by both short-path and long-path propagation?

Select	Answer
A	Periodic fading approximately every 10 seconds
B	Signal strength increased by 3 dB
C	A slightly delayed echo might be heard
D	The signal might be cancelled causing severe attenuation

15. - G3C07

What makes HF scatter signals often sound distorted?

Select	Answer
A	The ionospheric region involved is unstable
B	Ground waves are absorbing much of the signal
C	Energy is scattered into the skip zone through several different paths
D	The E region is not present

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. - G4B11

Which of the following must be connected to an antenna analyzer when it is being used for SWR measurements?

Select	Answer
A	Transmitter
B	Receiver
C	All these choices are correct
D	Antenna and feed line

18. - G4C02

Which of the following could be a cause of interference covering a wide range of frequencies?

Select	Answer
A	Arcing at a poor electrical connection
B	Using a balun to feed an unbalanced antenna
C	Not using a balun or line isolator to feed balanced antennas
D	Lack of rectification of the transmitter’s signal in power conductors

19. - G4D07

How much must the power output of a transmitter be raised to change the S meter reading on a distant receiver from S8 to S9?

Select	Answer
A	Approximately 2 times
B	Approximately 4 times
C	Approximately 8 times
D	Approximately 1.5 times

20. - G4E02

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

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

21. - G5A01

What happens when inductive and capacitive reactance are equal in a series LC circuit?

Select	Answer
A	Impedance is equal to the geometric mean of the inductance and capacitance
B	Resonance causes impedance to be very low
C	Impedance is equal to the arithmetic mean of the inductance and capacitance
D	Resonance causes impedance to be very high

22. - G5B11

What is the ratio of PEP to average power for an unmodulated carrier?

Select	Answer
A	1.00
B	1.414
C	0.707
D	2.00

23. - G5C14

Which of the following components should be added to an inductor to increase the inductance?

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

24. - G6A06

Why should wire-wound resistors not be used in RF circuits?

Select	Answer
A	The resistor’s inductance could make circuit performance unpredictable
B	The resistor’s internal capacitance would detune the circuit
C	The resistor could overheat
D	The resistor’s tolerance value would not be adequate

25. - G6B05

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

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

26. - G7A08

Which of the following is characteristic of a switchmode power supply as compared to a linear power supply?

Select	Answer
A	Fewer circuit components are required
B	Faster switching time makes higher output voltage possible
C	High-frequency operation allows the use of smaller components
D	Inherently more stable

27. - G7B11

For which of the following modes is a Class C power stage appropriate for amplifying a modulated signal?

Select	Answer
A	FM
B	AM
C	SSB
D	All these choices are correct

28. - G7C08

Which parameter affects receiver sensitivity?

Select	Answer
A	Demodulator stage bandwidth
B	Input amplifier gain
C	Input amplifier noise figure
D	All these choices are correct

29. - G8A09

What type of modulation is used by FT8?

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

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	101.75 Hz
B	416.7 Hz
C	5 kHz
D	60 kHz

31. - G8C09

Which is true of mesh network microwave nodes?

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

32. - G9A10

What standing wave ratio results from connecting a 50-ohm feed line to a 10-ohm resistive load?

Select	Answer
A	5:1
B	1:5
C	2:1
D	1:2

33. - G9B12

What is the approximate length for a 1/4 wave monopole antenna cut for 28.5 MHz?

Select	Answer
A	16 feet
B	8 feet
C	21 feet
D	11 feet

34. - G9C02

What is the approximate length of the driven element of a Yagi antenna?

Select	Answer
A	1 wavelength
B	1/2 wavelength
C	1/4 wavelength
D	3/4 wavelength

35. - G9D02

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

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