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. - G0A06

What must you do if your station fails to meet the FCC RF exposure exemption criteria?

Select	Answer
A	Contact the FCC for permission to transmit
B	Use an FCC-approved band-pass filter
C	Perform an RF Exposure Evaluation in accordance with FCC OET Bulletin 65
D	Perform an RF exposure evaluation in accordance with World Meteorological Organization guidelines

2. - G0B12

What is the purpose of a power supply interlock?

Select	Answer
A	To prevent unauthorized changes to the circuit that would void the manufacturer’s warranty
B	To shut down the unit if it becomes too hot
C	To ensure that dangerous voltages are removed if the cabinet is opened
D	To shut off the power supply if too much voltage is produced

3. - G1A09

Which of the following frequencies is within the General class portion of the 15-meter band?

Select	Answer
A	24900 kHz
B	18155 kHz
C	14250 kHz
D	21300 kHz

4. - G1B07

What are the restrictions on the use of abbreviations or procedural signals in the amateur service?

Select	Answer
A	They may be used if they do not obscure the meaning of a message
B	They are limited to those expressly listed in Part 97 of the FCC rules
C	They are not permitted
D	Only “Q” signals are permitted

5. - G1C06

What is the limit for transmitter power on the 1.8 MHz band?

Select	Answer
A	1000 watts PEP output
B	1500 watts PEP output
C	200 watts PEP output
D	1200 watts PEP output

6. - G1D01

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

Select	Answer
A	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
B	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
C	Anyone who held an FCC-issued amateur radio license that expired not less than 5 and not more than 15 years ago
D	Only persons who once held an FCC issued Novice, Technician, or Technician Plus license

7. - G1E12

When may third-party messages be transmitted via remote control?

Select	Answer
A	Only when the message is intended for third parties in areas where licensing is controlled by the FCC
B	Under any circumstances in which third party messages are permitted by FCC rules
C	Only when the message is intended for licensed radio amateurs
D	Under no circumstances except for emergencies

8. - G2A10

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

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

9. - G2B01

Which of the following is true concerning access to frequencies?

Select	Answer
A	Except during emergencies, no amateur station has priority access to any frequency
B	Contest operations should yield to non-contest use of frequencies
C	Nets have priority
D	QSOs in progress have priority

10. - G2C02

What should you do if a CW station sends “QRS?”

Select	Answer
A	Increase your power
B	Send slower
C	Change frequency
D	Repeat everything twice

11. - G2D02

Which of the following are objectives of the Volunteer Monitor Program?

Select	Answer
A	To encourage amateur radio operators to self-regulate and comply with the rules
B	To conduct efficient and orderly amateur licensing examinations
C	To provide emergency and public safety communications
D	To coordinate repeaters for efficient and orderly spectrum usage

12. - G2E06

What is the most common frequency shift for RTTY emissions in the amateur HF bands?

Select	Answer
A	425 Hz
B	850 Hz
C	85 Hz
D	170 Hz

13. - G3A12

What does the K-index measure?

Select	Answer
A	The relative position of sunspots on the surface of the Sun
B	The short-term stability of Earth’s geomagnetic field
C	The short-term stability of the Sun’s magnetic field
D	The solar radio flux at Boulder, Colorado

14. - G3B09

What is the approximate maximum distance along the Earth’s surface normally covered in one hop using the F2 region?

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

15. - G3C11

Which ionospheric region is the most absorbent of signals below 10 MHz during daylight hours?

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

16. - G4A03

How does a noise blanker work?

Select	Answer
A	By temporarily increasing received bandwidth
B	By redirecting noise pulses into a filter capacitor
C	By clipping noise peaks
D	By reducing receiver gain during a noise pulse

17. - G4B08

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

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

18. - G4C09

How can the effects of ground loops be minimized?

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

19. - G4D10

How close to the lower edge of a band’s phone segment should your displayed carrier frequency be when using 3 kHz wide LSB?

Select	Answer
A	At least 1 kHz above the edge of the segment
B	At least 3 kHz below the edge of the segment
C	At least 3 kHz above the edge of the segment
D	At least 1 kHz below the edge of the segment

20. - G4E09

What is the approximate open-circuit voltage from a fully illuminated silicon photovoltaic cell?

Select	Answer
A	0.5 VDC
B	1.38 VDC
C	0.02 VDC
D	0.2 VDC

21. - G5A10

Which of the following devices can be used for impedance matching at radio frequencies?

Select	Answer
A	A Pi-network
B	All these choices are correct
C	A transformer
D	A length of transmission line

22. - G5B09

What is the RMS voltage of a sine wave with a value of 17 volts peak?

Select	Answer
A	24 volts
B	8.5 volts
C	12 volts
D	34 volts

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	5.9 ohms
C	80 ohms
D	0.17 ohms

24. - G6A02

What is an advantage of batteries with low internal resistance?

Select	Answer
A	High voltage
B	Rapid recharge
C	Long life
D	High discharge current

25. - G6B02

What is meant by the term MMIC?

Select	Answer
A	Monolithic Microwave Integrated Circuit
B	Multi-Mode Integrated Circuit
C	Mode Modulated Integrated Circuit
D	Metal Monolayer Integrated Circuit

26. - G7A13

Which symbol in Figure G7-1 represents a tapped inductor?

Select	Answer
A	Symbol 6
B	Symbol 7
C	Symbol 11
D	Symbol 1

27. - G7B05

How many states does a 3-bit binary counter have?

Select	Answer
A	3
B	16
C	6
D	8

28. - G7C14

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

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

29. - G8A09

What type of modulation is used by FT8?

Select	Answer
A	Vestigial sideband
B	8-tone frequency shift keying
C	Amplitude compressed AM
D	8-bit direct sequence spread spectrum

30. - G8B13

Which of the following is an odd-order intermodulation product of frequencies F1 and F2?

Select	Answer
A	3F1-F2
B	All these choices are correct
C	5F1-3F2
D	2F1-F2

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 using the Varicode character set
D	By transmitting redundant information with the data

32. - G9A10

What standing wave ratio results from connecting a 50-ohm feed line to a 10-ohm resistive load?

Select	Answer
A	1:5
B	2:1
C	5:1
D	1:2

33. - G9B02

Which of the following is a common way to adjust the feed point impedance of an elevated quarter-wave ground-plane vertical antenna to be approximately 50 ohms?

Select	Answer
A	Coil the radials
B	Slope the radials upward
C	Lengthen the radials beyond one wavelength
D	Slope the radials downward

34. - G9C11

What is a beta or hairpin match?

Select	Answer
A	A series capacitor selected to cancel the inductive reactance of a folded dipole antenna
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 shorted transmission line stub placed at the feed point of a Yagi antenna to provide impedance matching
D	A section of 300-ohm twin-lead transmission line used to match a folded dipole antenna

35. - G9D11

Which of the following is a disadvantage of multiband antennas?

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

Figure G7-1