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

2. - G0B08

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

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

3. - G1A08

Which HF bands have segments exclusively allocated to Amateur Extra licensees?

Select	Answer
A	All HF bands
B	60 meters, 30 meters, 17 meters, and 12 meters
C	80 meters, 40 meters, 20 meters, and 15 meters
D	All HF bands except 160 meters and 10 meters

4. - G1B03

Which of the following is a purpose of a beacon station as identified in the FCC rules?

Select	Answer
A	Transmission of bulletins of general interest to amateur radio licensees
B	Automatic identification of repeaters
C	Observation of propagation and reception
D	All these choices are correct

5. - G1C09

What is the maximum power limit on the 60-meter band?

Select	Answer
A	ERP of 100 watts PEP with respect to an isotropic antenna
B	10 watts RMS
C	1500 watts PEP
D	ERP of 100 watts PEP with respect to a dipole

6. - G1D11

What action is required to obtain a new General class license after a previously held license has expired and the two-year grace period has passed?

Select	Answer
A	The applicant must show proof of the appropriate expired license grant and pass the current Element 2 exam
B	They must have a letter from the FCC showing they once held an amateur or commercial license
C	Contact the FCC to have the license reinstated
D	There are no requirements other than being able to show a copy of the expired license

7. - G1E05

What are the restrictions on messages sent to a third party in a country with which there is a Third-Party Agreement?

Select	Answer
A	They must be for other licensed amateurs
B	They must relate to emergencies or disaster relief
C	The message must be limited to no longer than 1 minute in duration and the name of the third party must be recorded in the station log
D	They must relate to amateur radio, or remarks of a personal character, or messages relating to emergencies or disaster relief

8. - G2A08

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

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

9. - G2B08

What is the voluntary band plan restriction for US stations transmitting within the 48 contiguous states in the 50.1 MHz to 50.125 MHz band segment?

Select	Answer
A	Only SSTV contacts
B	Only contacts with stations not within the 48 contiguous states
C	Only contacts with other stations within the 48 contiguous states
D	Only digital contacts

10. - G2C03

What does it mean when a CW operator sends “KN” at the end of a transmission?

Select	Answer
A	Listening only for a specific station or stations
B	Closing station now
C	No US stations should call
D	Operating full break-in

11. - G2D07

Which of the following are examples of the NATO Phonetic Alphabet?

Select	Answer
A	America, Boston, Canada, Denmark
B	Adam, Boy, Charles, David
C	Able, Baker, Charlie, Dog
D	Alpha, Bravo, Charlie, Delta

12. - G2E01

Which mode is normally used when sending RTTY signals via AFSK with an SSB transmitter?

Select	Answer
A	DSB
B	LSB
C	USB
D	CW

13. - G3A06

What is a geomagnetic storm?

Select	Answer
A	A thunderstorm that affects radio propagation
B	A temporary disturbance in Earth’s geomagnetic field
C	A sudden drop in the solar flux index
D	Ripples in the geomagnetic force

14. - G3B05

How does the ionosphere affect radio waves with frequencies below the MUF and above the LUF?

Select	Answer
A	They are refracted and trapped in the ionosphere to circle Earth
B	They pass through the ionosphere
C	They are amplified by interaction with the ionosphere
D	They are refracted back to Earth

15. - G3C06

What is a characteristic of HF scatter?

Select	Answer
A	Phone signals have high intelligibility
B	Signals have a fluttering sound
C	Scatter propagation occurs only at night
D	There are very large, sudden swings in signal strength

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	Desired power output without exceeding maximum allowable plate current
C	Highest plate voltage while minimizing grid current
D	Minimum plate current without exceeding maximum allowable grid current

17. - G4B13

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

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

18. - G4C10

What could be a symptom caused by a ground loop in your station’s audio connections?

Select	Answer
A	An item of station equipment starts to draw excessive amounts of current
B	The SWR reading for one or more antennas is suddenly very high
C	You receive reports of “hum” on your station’s transmitted signal
D	You receive reports of harmonic interference from your station

19. - G4D05

How does a signal that reads 20 dB over S9 compare to one that reads S9 on a receiver, assuming a properly calibrated S meter?

Select	Answer
A	It is 20 times less powerful
B	It is 100 times more powerful
C	It is 20 times more powerful
D	It is 10 times less powerful

20. - G4E05

Which of the following most limits an HF mobile installation?

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

21. - G5A05

How does an inductor react to AC?

Select	Answer
A	As the frequency of the applied AC increases, the reactance increases
B	As the frequency of the applied AC increases, the reactance decreases
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. - G5B08

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

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

23. - G5C05

Why is the primary winding wire of a voltage step-up transformer usually a larger size than that of the secondary winding?

Select	Answer
A	To prevent parasitic oscillations due to resistive losses in the primary
B	To ensure that the volume of the primary winding is equal to the volume of the secondary winding
C	To improve the coupling between the primary and secondary
D	To accommodate the higher current of the primary

24. - G6A12

What is the primary purpose of a screen grid in a vacuum tube?

Select	Answer
A	To decrease plate resistance
B	To increase efficiency
C	To reduce grid-to-plate capacitance
D	To increase the control grid resistance

25. - G6B10

How does a ferrite bead or core reduce common-mode RF current on the shield of a coaxial cable?

Select	Answer
A	It converts common-mode current to differential mode current
B	Ferrites expel magnetic fields
C	By creating an impedance in the current’s path
D	By creating an out-of-phase current to cancel the common-mode current

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 sine wave at half the frequency of the AC input
C	A series of DC pulses at the same frequency as the AC input
D	A series of DC pulses at twice the frequency of the AC input

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 number of stages in the counter
D	The time delay of the lag circuit

28. - G7C14

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

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

29. - G8A12

What is QPSK modulation?

Select	Answer
A	Modulation using quasi-parallel to serial conversion to reduce bandwidth
B	Modulation using Fast Fourier Transforms to generate frequencies at the first, second, third, and fourth harmonics of the carrier frequency to improve noise immunity
C	Modulation using quadra-pole sideband keying to generate spread spectrum signals
D	Modulation in which digital data is transmitted using 0-, 90-, 180- and 270-degrees phase shift to represent pairs of bits

30. - G8B12

What process combines two signals in a non-linear circuit to produce unwanted spurious outputs?

Select	Answer
A	Rolloff
B	Heterodyning
C	Detection
D	Intermodulation

31. - G8C12

Which type of code is used for sending characters in a PSK31 signal?

Select	Answer
A	Viterbi
B	Binary
C	Volumetric
D	Varicode

32. - G9A07

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

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

33. - G9B04

What is the radiation pattern of a dipole antenna in free space in a plane containing the conductor?

Select	Answer
A	It has a pair of lobes on one side of the antenna and a single lobe on the other side
B	It is a figure-eight at right angles to the antenna
C	It is a figure-eight off both ends of the antenna
D	It is a circle (equal radiation in all directions)

34. - G9C07

What does “front-to-back ratio” mean in reference to a Yagi antenna?

Select	Answer
A	The relative position of the driven element with respect to the reflectors and directors
B	The power radiated in the major lobe compared to that in the opposite direction
C	The number of directors versus the number of reflectors
D	The ratio of forward gain to dipole gain

35. - G9D09

What is the primary use of a Beverage antenna?

Select	Answer
A	Directional receiving for MF and low HF bands
B	Portable direction finding at higher HF frequencies
C	Portable direction finding at lower HF frequencies
D	Directional transmitting for low HF bands