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. - G0A03

How can you determine that your station complies with FCC RF exposure regulations?

Select	Answer
A	All these choices are correct
B	By calculation based on computer modeling
C	By calculation based on FCC OET Bulletin 65
D	By measurement of field strength using calibrated equipment

2. - G0B04

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

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

3. - G1A03

On which of the following bands is image transmission prohibited?

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

4. - G1B05

Which of the following one-way transmissions are permitted?

Select	Answer
A	Regular transmissions offering equipment for sale, if intended for amateur radio use
B	Unidentified test transmissions of less than 10 seconds in duration
C	All these choices are correct
D	Transmissions to assist with learning the International Morse code

5. - G1C09

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

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

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

7. - G1E11

On what bands may automatically controlled stations transmitting RTTY or data emissions communicate with other automatically controlled digital stations?

Select	Answer
A	On any band segment where digital operation is permitted
B	Anywhere in the 6-meter or shorter wavelength bands, and in limited segments of some of the HF bands
C	Anywhere in the non-phone segments of the 10-meter or shorter wavelength bands
D	Only in the non-phone Extra Class segments of the bands

8. - G2A11

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

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

9. - G2B09

Who may be the control operator of an amateur station transmitting in RACES to assist relief operations during a disaster?

Select	Answer
A	A person holding an FCC-issued amateur operator license or an appropriate government official
B	Only a RACES net control operator
C	Any control operator when normal communication systems are operational
D	Only a person holding an FCC-issued amateur operator license

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 10 wpm
B	At the standard calling speed of 5 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. - G2D04

Which of the following describes an azimuthal projection map?

Select	Answer
A	A map that shows accurate land masses
B	A map that shows true bearings and distances from a specific location
C	A map that shows the angle at which an amateur satellite crosses the equator
D	A map that shows the number of degrees longitude that an amateur satellite appears to move westward at the equator with each orbit

12. - G2E03

What symptoms may result from other signals interfering with a PACTOR or VARA transmission?

Select	Answer
A	Long pauses in message transmission
B	Failure to establish a connection between stations
C	All these choices are correct
D	Frequent retries or timeouts

13. - G3A14

How is long distance radio communication usually affected by the charged particles that reach Earth from solar coronal holes?

Select	Answer
A	VHF/UHF ducting is disturbed
B	HF communication is improved
C	HF communication is disturbed
D	VHF/UHF ducting is improved

14. - G3B12

Which of the following is typical of the lower HF frequencies during the summer?

Select	Answer
A	Heavy distortion on signals due to photon absorption
B	Poor propagation at any time of day
C	High levels of atmospheric noise or static
D	World-wide propagation during daylight hours

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	The E region is not present
D	Energy is scattered into the skip zone through several different paths

16. - G4A12

Which of the following is a common use of the dual-VFO feature on a transceiver?

Select	Answer
A	To transmit on one frequency and listen on another
B	To permit full duplex operation -- that is, transmitting and receiving at the same time
C	To improve frequency accuracy by allowing variable frequency output (VFO) operation
D	To allow transmitting on two frequencies at once

17. - G4B08

What transmitter performance parameter does a two-tone test analyze?

Select	Answer
A	Linearity
B	Percentage of frequency modulation
C	Percentage of suppression of the carrier and undesired sideband for SSB
D	Percentage of carrier phase shift

18. - G4C01

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

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

19. - G4D04

What does an S meter measure?

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

20. - G4E10

Why should a series diode be connected between a solar panel and a storage battery that is being charged by the panel?

Select	Answer
A	To prevent overload by regulating the charging voltage
B	To limit the current flowing from the panel to a safe value
C	To prevent damage to the battery due to excessive voltage at high illumination levels
D	To prevent discharge of the battery through the panel during times of low or no illumination

21. - G5A07

What is the term for the inverse of impedance?

Select	Answer
A	Reluctance
B	Conductance
C	Susceptance
D	Admittance

22. - G5B07

What value of an AC signal produces the same power dissipation in a resistor as a DC voltage of the same value?

Select	Answer
A	The RMS value
B	The peak value
C	The peak-to-peak value
D	The reciprocal of the RMS value

23. - G5C03

What is the total resistance of a 10-, a 20-, and a 50-ohm resistor connected in parallel?

Select	Answer
A	17 ohms
B	0.17 ohms
C	80 ohms
D	5.9 ohms

24. - G6A08

Which of the following is characteristic of low voltage ceramic capacitors?

Select	Answer
A	Tight tolerance
B	High capacitance for given volume
C	Comparatively low cost
D	High stability

25. - G6B06

What kind of device is an integrated circuit operational amplifier?

Select	Answer
A	Programmable Logic
B	Digital
C	MMIC
D	Analog

26. - G7A11

Which symbol in figure G7-1 represents an NPN junction transistor?

Select	Answer
A	Symbol 2
B	Symbol 1
C	Symbol 7
D	Symbol 11

27. - G7B09

What determines the frequency of an LC oscillator?

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

28. - G7C11

Which of these functions is performed by software in a software-defined radio (SDR)?

Select	Answer
A	Modulation
B	Filtering
C	Detection
D	All these choices are correct

29. - G8A11

What is the modulation envelope of an AM signal?

Select	Answer
A	The bandwidth of the modulated signal
B	The carrier frequency that contains the signal
C	Spurious signals that envelop nearby frequencies
D	The waveform created by connecting the peak values of the modulated signal

30. - G8B04

What is the stage in a VHF FM transmitter that generates a harmonic of a lower frequency signal to reach the desired operating frequency?

Select	Answer
A	Mixer
B	Balanced converter
C	Reactance modulator
D	Multiplier

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

32. - G9A06

In what units is RF feed line loss usually expressed?

Select	Answer
A	Ohms per 1,000 feet
B	Ohms per 100 feet
C	Decibels per 100 feet
D	Decibels per 1,000 feet

33. - G9B08

How does the feed point impedance of a 1/2 wave dipole change as the feed point is moved from the center toward the ends?

Select	Answer
A	It steadily decreases
B	It peaks at about 1/8 wavelength from the end
C	It is unaffected by the location of the feed point
D	It steadily increases

34. - G9C11

What is a beta or hairpin match?

Select	Answer
A	A shorted transmission line stub placed at the feed point of a Yagi antenna to provide impedance matching
B	A 1/4 wavelength section of 75-ohm coax in series with the feed point of a Yagi to provide impedance matching
C	A series capacitor selected to cancel the inductive reactance of a folded dipole antenna
D	A section of 300-ohm twin-lead transmission line used to match a folded dipole antenna

35. - G9D05

What is an advantage of vertically stacking horizontally polarized Yagi antennas?

Select	Answer
A	It allows simultaneous vertical and horizontal polarization
B	It narrows the main lobe in elevation
C	It allows quick selection of vertical or horizontal polarization
D	It narrows the main lobe in azimuth

Figure G7-1