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. - G0A11

What precaution should be taken if you install an indoor transmitting antenna?

Select	Answer
A	Position the antenna along the edge of a wall to reduce parasitic radiation
B	Locate the antenna close to your operating position to minimize feed-line radiation
C	Make sure that MPE limits are not exceeded in occupied areas
D	Make sure the antenna is properly shielded

2. - G0B07

Which of these choices should be observed when climbing a tower using a safety harness?

Select	Answer
A	Confirm that the harness is rated for the weight of the climber and that it is within its allowable service life
B	Always hold on to the tower with one hand
C	Ensure that all heavy tools are securely fastened to the harness
D	All these choices are correct

3. - G1A08

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

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

4. - G1B11

Who or what determines “good engineering and good amateur practice,” as applied to the operation of an amateur station in all respects not covered by the Part 97 rules?

Select	Answer
A	The FCC
B	The control operator
C	The ITU
D	The IEEE

5. - G1C10

What is the maximum symbol rate permitted for RTTY or data emission transmissions on the 10-meter band?

Select	Answer
A	300 baud
B	1200 baud
C	19.6 kilobaud
D	56 kilobaud

6. - G1D01

Who may receive partial credit for the elements represented by an expired amateur radio license?

Select	Answer
A	Anyone who held an FCC-issued amateur radio license that expired not less than 5 and not more than 15 years ago
B	Only persons who once held an FCC issued Novice, Technician, or Technician Plus license
C	Any person who can demonstrate that they once held an FCC-issued General, Advanced, or Amateur Extra class license that was not revoked by the FCC
D	Any person who previously held an amateur license issued by another country, but only if that country has a current reciprocal licensing agreement with the FCC

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

8. - G2A07

Which of the following statements is true of single sideband (SSB)?

Select	Answer
A	Only one sideband is transmitted; the other sideband and carrier are suppressed
B	SSB is the only voice mode authorized on the 20-, 15-, and 10-meter amateur bands
C	Only one sideband and the carrier are transmitted; the other sideband is suppressed
D	SSB is the only voice mode authorized on the 160-, 75-, and 40-meter amateur bands

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	Follow the voluntary band plan
D	Listen on the frequency for at least two minutes to be sure it is clear

10. - G2C01

Which of the following describes full break-in CW operation (QSK)?

Select	Answer
A	Breaking stations send the Morse code prosign “BK”
B	Automatic keyers, instead of hand keys, are used to send Morse code
C	An operator must activate a manual send/receive switch before and after every transmission
D	Transmitting stations can receive between code characters and elements

11. - G2D03

What procedure may be used by Volunteer Monitors to localize a station whose continuous carrier is holding a repeater on in their area?

Select	Answer
A	All these choices are correct
B	Compare signal strengths between the input and output of the repeater
C	Compare beam headings on the repeater input from their home locations with that of other Volunteer Monitors
D	Compare vertical and horizontal signal strengths on the input frequency

12. - G2E15

Which of the following is a common location for FT8?

Select	Answer
A	Approximately 14.110 MHz to 14.113 MHz
B	Anywhere in the CW portion of the band
C	Approximately 14.074 MHz to 14.077 MHz
D	Anywhere in the voice portion of the band

13. - G3A03

Approximately how long does it take the increased ultraviolet and X-ray radiation from a solar flare to affect radio propagation on Earth?

Select	Answer
A	20 to 40 hours
B	28 days
C	8 minutes
D	1 to 2 hours

14. - G3B10

What is the approximate maximum distance along the Earth’s surface normally covered in one hop using the E region?

Select	Answer
A	2,500 miles
B	12,000 miles
C	1,200 miles
D	180 miles

15. - G3C05

Why is long-distance communication on the 40-, 60-, 80-, and 160-meter bands more difficult during the day?

Select	Answer
A	The F region is unstable during daylight hours
B	The D region absorbs signals at these frequencies during daylight hours
C	The E region is unstable during daylight hours
D	The F region absorbs signals at these frequencies during daylight hours

16. - G4A01

What is the purpose of the notch filter found on many HF transceivers?

Select	Answer
A	To restrict the transmitter voice bandwidth
B	To eliminate receiver interference from impulse noise sources
C	To remove interfering splatter generated by signals on adjacent frequencies
D	To reduce interference from carriers in the receiver passband

17. - G4B12

What effect can strong signals from nearby transmitters have on an antenna analyzer?

Select	Answer
A	Desensitization which can cause intermodulation products which interfere with impedance readings
B	All these choices are correct
C	Generation of harmonics which interfere with frequency readings
D	Received power that interferes with SWR readings

18. - G4C10

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

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

19. - G4D01

What is the purpose of a speech processor in a transceiver?

Select	Answer
A	Increase the apparent loudness of transmitted voice signals
B	Prevent distortion of voice signals
C	Increase transmitter bass response for more natural-sounding SSB signals
D	Decrease high-frequency voice output to prevent out-of-band operation

20. - G4E08

In what configuration are the individual cells in a solar panel connected together?

Select	Answer
A	Series-parallel
B	Full-wave bridge
C	Bypass
D	Shunt

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 alternating current caused by capacitance or inductance
D	Reinforcement of the flow of direct current caused by resistance

22. - G5B03

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

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

23. - G5C10

What is the inductance of three 10-millihenry inductors connected in parallel?

Select	Answer
A	30 millihenries
B	0.30 henries
C	3.3 henries
D	3.3 millihenries

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 could overheat
C	The resistor’s tolerance value would not be adequate
D	The resistor’s internal capacitance would detune the circuit

25. - G6B08

How is an LED biased when emitting light?

Select	Answer
A	Reverse biased
B	Forward biased
C	At the Zener voltage
D	In the tunnel-effect region

26. - G7A09

Which symbol in figure G7-1 represents a field effect transistor?

Select	Answer
A	Symbol 1
B	Symbol 2
C	Symbol 4
D	Symbol 5

27. - G7B08

How is the efficiency of an RF power amplifier determined?

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

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. - G8A10

What is meant by the term “flat-topping,” when referring to an amplitude-modulated phone signal?

Select	Answer
A	Signal distortion caused by insufficient collector current
B	The transmitter’s carrier is properly suppressed
C	Signal distortion caused by excessive drive or speech levels
D	The transmitter’s automatic level control (ALC) is properly adjusted

30. - G8B03

What is another term for the mixing of two RF signals?

Select	Answer
A	Synthesizing
B	Phase inversion
C	Heterodyning
D	Frequency inversion

31. - G8C15

What does an FT8 signal report of +3 mean?

Select	Answer
A	The signal-to-noise ratio is equivalent to +3dB in a 2.5 kHz bandwidth
B	The signal is 3 dB over S9
C	The signal is 3 times the noise level of an equivalent SSB signal
D	The signal is S3 (weak signals)

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 must be at DC ground potential
C	The feed line must be an odd number of electrical quarter wavelengths long
D	The antenna feed point impedance must be matched to the characteristic impedance of the feed line

33. - G9B03

Which of the following best describes the radiation pattern of a quarter-wave ground-plane vertical antenna?

Select	Answer
A	Isotropic
B	Bi-directional in azimuth
C	Hemispherical
D	Omnidirectional in azimuth

34. - G9C10

Which of the following can be adjusted to optimize forward gain, front-to-back ratio, or SWR bandwidth of a Yagi antenna?

Select	Answer
A	The spacing of each element along the boom
B	The number of elements on the boom
C	The physical length of the boom
D	All these choices are correct

35. - G9D11

Which of the following is a disadvantage of multiband antennas?

Select	Answer
A	They have poor harmonic rejection
B	They present low impedance on all design frequencies
C	They must be used with an antenna tuner
D	They must be fed with open wire line

Figure G7-1