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

2. - G0B09

Which of the following is true of an emergency generator installation?

Select	Answer
A	All these choices are correct
B	The generator must be insulated from ground
C	Fuel should be stored near the generator for rapid refueling in case of an emergency
D	The generator should be operated in a well-ventilated area

3. - G1A10

What portion of the 10-meter band is available for repeater use?

Select	Answer
A	The portion above 29.5 MHz
B	The entire band
C	The portion between 28.1 MHz and 28.2 MHz
D	The portion between 28.3 MHz and 28.5 MHz

4. - G1B04

Which of the following transmissions is permitted for all amateur stations?

Select	Answer
A	Automatic retransmission of other amateur signals by any amateur station
B	Occasional retransmission of weather and propagation forecast information from US government stations
C	Encrypted messages, if not intended to facilitate a criminal act
D	Unidentified transmissions of less than 10 seconds duration for test purposes only

5. - G1C02

What is the maximum transmitter power an amateur station may use on the 12-meter band?

Select	Answer
A	50 watts PEP output
B	1500 watts PEP output
C	200 watts PEP output
D	An effective radiated power equivalent to 100 watts from a half-wave dipole

6. - G1D03

On which of the following band segments may you operate if you are a Technician class operator and have an unexpired Certificate of Successful Completion of Examination (CSCE) for General class privileges?

Select	Answer
A	On any General or Technician class band segment except 30 meters and 60 meters
B	On any General or Technician class band segment
C	Only on the Technician band segments until you have a receipt for the FCC application fee payment
D	Only the Technician band segments until your upgrade is posted in the FCC database

7. - G1E04

Which of the following conditions require a licensed amateur radio operator to take specific steps to avoid harmful interference to other users or facilities?

Select	Answer
A	All these choices are correct
B	When operating within one mile of an FCC Monitoring Station
C	When a station is transmitting spread spectrum emissions
D	When using a band where the Amateur Service is secondary

8. - G2A10

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

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

9. - G2B07

Which of the following complies with commonly accepted amateur practice when choosing a frequency on which to initiate a call?

Select	Answer
A	Identify your station by transmitting your call sign at least 3 times
B	All these choices are correct
C	Listen on the frequency for at least two minutes to be sure it is clear
D	Follow the voluntary band plan

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 faster than the CQ
D	The fastest speed at which you are comfortable copying, but no slower than the CQ

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

12. - G2E11

What is the primary purpose of an Amateur Radio Emergency Data Network (AREDN) mesh network?

Select	Answer
A	To provide DX spotting reports to aid contesters and DXers
B	To provide high-speed data services during an emergency or community event
C	To provide real time propagation data by monitoring amateur radio transmissions worldwide
D	To provide FM repeater coverage in remote areas

13. - G3A09

How can high geomagnetic activity benefit radio communications?

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

14. - G3B04

Which of the following is a way to determine current propagation on a desired band from your station?

Select	Answer
A	Check the A-index
B	All these choices are correct
C	Send a series of dots and listen for echoes
D	Use a network of automated receiving stations on the internet to see where your transmissions are being received

15. - G3C01

Which ionospheric region is closest to the surface of Earth?

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

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 eliminate receiver interference from impulse noise sources
D	To restrict the transmitter voice bandwidth

17. - G4B04

What signal source is connected to the vertical input of an oscilloscope when checking the RF envelope pattern of a transmitted signal?

Select	Answer
A	An external RF oscillator
B	The transmitter balanced mixer output
C	The attenuated RF output of the transmitter
D	The local oscillator of the transmitter

18. - G4C09

How can the effects of ground loops be minimized?

Select	Answer
A	Connect the AC neutral conductor to the ground wire
B	Bond equipment enclosures together
C	Avoid using lock washers and star washers when making ground connections
D	Connect all ground conductors in series

19. - G4D04

What does an S meter measure?

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

20. - G4E04

Why should DC power for a 100-watt HF transceiver not be supplied by a vehicle’s auxiliary power socket?

Select	Answer
A	The socket is not wired with an RF-shielded power cable
B	The socket’s wiring may be inadequate for the current drawn by the transceiver
C	The DC polarity of the socket is reversed from the polarity of modern HF transceivers
D	Drawing more than 50 watts from this socket could cause the engine to overheat

21. - G5A06

How does a capacitor react to AC?

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

22. - G5B03

How many watts of electrical power are consumed if 400 VDC is supplied to an 800-ohm load?

Select	Answer
A	200 watts
B	0.5 watts
C	400 watts
D	3200 watts

23. - G5C14

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

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

24. - G6A06

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

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

25. - G6B06

What kind of device is an integrated circuit operational amplifier?

Select	Answer
A	Programmable Logic
B	Digital
C	Analog
D	MMIC

26. - G7A07

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

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

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	Multiply the RF input power by the reciprocal of the RF output power
C	Divide the DC input power by the DC output power
D	Divide the RF output power by the DC input power

28. - G7C14

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

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

29. - G8A08

Which of the following is an effect of overmodulation?

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

30. - G8B10

What is the relationship between transmitted symbol rate and bandwidth?

Select	Answer
A	Lower symbol rates require wider bandwidth
B	Higher symbol rates require wider bandwidth
C	Bandwidth is half the symbol rate
D	Symbol rate and bandwidth are not related

31. - G8C10

How does forward error correction (FEC) allow the receiver to correct data errors?

Select	Answer
A	By using a parity bit with each character
B	By controlling transmitter output power for optimum signal strength
C	By transmitting redundant information with the data
D	By using the Varicode character set

32. - G9A09

What standing wave ratio results from connecting a 50-ohm feed line to a 200-ohm resistive load?

Select	Answer
A	4:1
B	1:4
C	2:1
D	1:2

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

34. - G9C05

What is the primary effect of increasing boom length and adding directors to a Yagi antenna?

Select	Answer
A	Front-to-back ratio decreases
B	Resonant frequency is lower
C	Beamwidth increases
D	Gain increases

35. - G9D06

Which of the following is an advantage of a log-periodic antenna?

Select	Answer
A	Higher gain per element than a Yagi antenna
B	Wide bandwidth
C	Harmonic suppression
D	Polarization diversity