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

2. - G0B04

Where should the station’s lightning protection ground system be located?

Select	Answer
A	Parallel to the water supply line
B	As close to the station equipment as possible
C	Next to the closest power pole
D	Outside the building

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	30 meters
C	12 meters
D	60 meters

4. - G1B09

On what HF frequencies are automatically controlled beacons permitted?

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

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	Publicly document the technical characteristics of the protocol
C	Type-certify equipment to FCC standards
D	Obtain an experimental license from the FCC

6. - G1D05

When operating a US station by remote control from outside the country, what license is required of the control operator?

Select	Answer
A	Only an appropriate US operator/primary license and a special remote station permit from the FCC
B	Only a license from the foreign country, as long as the call sign includes identification of portable operation in the US
C	A license from the foreign country and a special remote station permit from the FCC
D	A US operator/primary station license

7. - G1E03

What is required to conduct communications with a digital station operating under automatic control outside the automatic control band segments?

Select	Answer
A	The interrogating transmission must be made by another automatically controlled station
B	The station initiating the contact must be under local or remote control
C	No third-party traffic may be transmitted
D	The control operator of the interrogating station must hold an Amateur Extra class license

8. - G2A11

Generally, who should respond to a station in the contiguous 48 states calling “CQ DX”?

Select	Answer
A	Only stations in Germany
B	Only contest stations
C	Any caller is welcome to respond
D	Any stations outside the lower 48 states

9. - G2B03

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

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

10. - G2C07

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

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

11. - G2D11

Why are signal reports typically exchanged at the beginning of an HF contact?

Select	Answer
A	To be sure the contact will count for award programs
B	To follow standard radiogram structure
C	To allow each station to calibrate their frequency display
D	To allow each station to operate according to conditions

12. - G2E13

What is another name for a Winlink Remote Message Server?

Select	Answer
A	Terminal Node Controller
B	Printer/Server
C	Gateway
D	RJ-45

13. - G3A05

What is the solar flux index?

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

14. - G3B04

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

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

15. - G3C01

Which ionospheric region is closest to the surface of Earth?

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

16. - G4A08

What is the correct adjustment for the LOAD or COUPLING control of a vacuum tube RF power amplifier?

Select	Answer
A	Minimum SWR on the antenna
B	Minimum plate current without exceeding maximum allowable grid current
C	Desired power output without exceeding maximum allowable plate current
D	Highest plate voltage while minimizing grid current

17. - G4B13

Which of the following can be measured with an antenna analyzer?

Select	Answer
A	Power output from a transmitter
B	Impedance of coaxial cable
C	Front-to-back ratio of an antenna
D	Gain of a directional antenna

18. - G4C05

What is a possible cause of high voltages that produce RF burns?

Select	Answer
A	Insulated wire has been used for the ground wire
B	The ground rod is resonant
C	Flat braid rather than round wire has been used for the ground wire
D	The ground wire has high impedance on that frequency

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

20. - G4E05

Which of the following most limits an HF mobile installation?

Select	Answer
A	Efficiency of the electrically short antenna
B	The wire gauge of the DC power line to the transceiver
C	FCC rules limiting mobile output power on the 75-meter band
D	“Picket fencing”

21. - G5A02

What is reactance?

Select	Answer
A	Opposition to the flow of direct current caused by resistance
B	Opposition to the flow of alternating current caused by capacitance or inductance
C	Reinforcement of the flow of direct current caused by resistance
D	Reinforcement of the flow of alternating current caused by capacitance or inductance

22. - G5B08

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

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

23. - G5C11

What is the inductance of a circuit with a 20-millihenry inductor connected in series with a 50-millihenry inductor?

Select	Answer
A	14.3 millihenries
B	70 millihenries
C	7 millihenries
D	1,000 millihenries

24. - G6A03

What is the approximate forward threshold voltage of a germanium diode?

Select	Answer
A	1.0 volts
B	0.1 volt
C	0.7 volts
D	0.3 volts

25. - G6B07

Which of the following describes a type N connector?

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

26. - G7A03

Which type of rectifier circuit uses two diodes and a center-tapped transformer?

Select	Answer
A	Full-wave bridge
B	Synchronous
C	Full-wave
D	Half-wave

27. - G7B08

How is the efficiency of an RF power amplifier determined?

Select	Answer
A	Divide the DC input power by the DC output power
B	Divide the RF output power by the DC input power
C	Multiply the RF input power by the reciprocal of the RF output power
D	Add the RF input power to the DC output power

28. - G7C01

What circuit is used to select one of the sidebands from a balanced modulator?

Select	Answer
A	Carrier oscillator
B	IF amplifier
C	Filter
D	RF amplifier

29. - G8A01

How is direct binary FSK modulation generated?

Select	Answer
A	By changing an oscillator’s frequency directly with a digital control signal
B	By reconfiguring the CW keying input to act as a tone generator
C	By keying an FM transmitter with a sub-audible tone
D	By using a transceiver’s computer data interface protocol to change frequencies

30. - G8B02

What is the term for interference from a signal at twice the IF frequency from the desired signal?

Select	Answer
A	Mixer interference
B	Quadrature response
C	Intermediate interference
D	Image response

31. - G8C01

On what band do amateurs share channels with the unlicensed Wi-Fi service?

Select	Answer
A	2.4 GHz
B	902 MHz
C	10.7 GHz
D	432 MHz

32. - G9A05

How does the attenuation of coaxial cable change with increasing frequency?

Select	Answer
A	Attenuation decreases
B	Attenuation increases
C	Attenuation is independent of frequency
D	Attenuation follows Marconi’s Law of Attenuation

33. - G9B11

What is the approximate length for a 1/2 wave dipole antenna cut for 3.550 MHz?

Select	Answer
A	132 feet
B	84 feet
C	263 feet
D	42 feet

34. - G9C01

Which of the following would increase the bandwidth of a Yagi antenna?

Select	Answer
A	Tapered-diameter elements
B	Larger-diameter elements
C	Closer element spacing
D	Loading coils in series with the element

35. - G9D08

How does a “screwdriver” mobile antenna adjust its feed point impedance?

Select	Answer
A	By extending and retracting the whip
B	By deploying a capacitance hat
C	By varying the base loading inductance
D	By varying its body capacitance