US Amateur Radio - General (Element 3, 2015-2019) Practice Test

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US Amateur Radio - General (Element 3, 2015-2019) Practice Test

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1. - G1A10

Which of the following frequencies is available to a control operator holding a General Class license?

Select	Answer
A	28.020 MHz
B	28.550 MHz
C	All of these choices are correct
D	28.350 MHz

2. - G1B05

When may music be transmitted by an amateur station?

Select	Answer
A	At any time, as long as it produces no spurious emissions
B	When it is an incidental part of a manned space craft retransmission
C	When it is transmitted on frequencies above 1215 MHz
D	When it is unintentionally transmitted from the background at the transmitter

3. - G1C05

Which of the following is a limitation on transmitter power on the 28 MHz band for a General Class control operator?

Select	Answer
A	1500 watts PEP output
B	100 watts PEP output
C	1000 watts PEP output
D	2000 watts PEP output

4. - G1D08

Which of the following criteria must be met for a non-U.S. citizen to be an accredited Volunteer Examiner?

Select	Answer
A	None of these choices is correct; a non-U.S. citizen cannot be a Volunteer Examiner
B	The person must be a resident of the U.S. for a minimum of 5 years
C	The person's home citizenship must be in ITU region 2
D	The person must hold an FCC granted Amateur Radio license of General Class or above

5. - G1E08

Which of the following is a requirement for a non-licensed person to communicate with a foreign Amateur Radio station from a station with an FCC-granted license at which an FCC licensed control operator is present?

Select	Answer
A	The foreign amateur station must be in a country with which the United States has a third party agreement
B	All of these choices are correct
C	Information must be exchanged in English
D	The control operator must have at least a General Class license

6. - G2A08

Which of the following is a recommended way to break into a contact when using phone?

Select	Answer
A	Say "CQ" followed by the call sign of either station
B	Say your call sign during a break between transmissions by the other stations
C	Say "Break Break Break" and wait for a response
D	Say "QRZ" several times followed by your call sign

7. - G2B12

When is an amateur station allowed to use any means at its disposal to assist another station in distress?

Select	Answer
A	Only on authorized HF frequencies
B	Only when transmitting in RACES
C	At any time when transmitting in an organized net
D	At any time during an actual emergency

8. - G2C01

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

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

9. - G2D11

Which HF antenna would be the best to use for minimizing interference?

Select	Answer
A	A quarter-wave vertical antenna
B	An isotropic antenna
C	A directional antenna
D	An omnidirectional antenna

10. - G2E09

How do you join a contact between two stations using the PACTOR protocol?

Select	Answer
A	Send broadcast packets containing your call sign while in MONITOR mode
B	Transmit a steady carrier until the PACTOR protocol times out and disconnects
C	Joining an existing contact is not possible, PACTOR connections are limited to two stations
D	Send a NAK response continuously so that the sending station has to pause

11. - G3A14

How are radio communications usually affected by the charged particles that reach the Earth from solar coronal holes?

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

12. - G3B03

Which of the following applies when selecting a frequency for lowest attenuation when transmitting on HF?

Select	Answer
A	Select a frequency just above the LUF
B	Select a frequency just above the critical frequency
C	Select a frequency just below the critical frequency
D	Select a frequency just below the MUF

13. - G3C10

Which of the following might be an indication that signals heard on the HF bands are being received via scatter propagation?

Select	Answer
A	The communication is during a sudden ionospheric disturbance
B	The signal is heard on a frequency above the Maximum Usable Frequency
C	The communication is during a sunspot maximum
D	The signal is heard on a frequency below the Maximum Usable Frequency

14. - G4A15

Which of the following can be a symptom of transmitted RF being picked up by an audio cable carrying AFSK data signals between a computer and a transceiver?

Select	Answer
A	The VOX circuit does not un-key the transmitter
B	All of these choices are correct
C	The transmitter signal is distorted
D	Frequent connection timeouts

15. - G4B06

What is an advantage of a digital voltmeter as compared to an analog voltmeter?

Select	Answer
A	Better for measuring computer circuits
B	Faster response
C	Better precision for most uses
D	Better for RF measurements

16. - G4C06

What effect can be caused by a resonant ground connection?

Select	Answer
A	Overheating of ground straps
B	A ground loop
C	High RF voltages on the enclosures of station equipment
D	Corrosion of the ground rod

17. - G4D10

How close to the lower edge of the 40-meter General Class phone segment should your displayed carrier frequency be when using 3 kHz wide LSB?

Select	Answer
A	Your displayed carrier frequency may be set at the edge of the segment
B	At least 3 kHz below the edge of the segment
C	At least 1 kHz above the edge of the segment
D	At least 3 kHz above the edge of the segment

18. - G4E01

What is the purpose of a capacitance hat on a mobile antenna?

Select	Answer
A	To allow automatic band changing
B	To increase the power handling capacity of a whip antenna
C	To electrically lengthen a physically short antenna
D	To allow remote tuning

19. - G5A13

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

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

20. - G5B06

What is the output PEP from a transmitter if an oscilloscope measures 200 volts peak-to-peak across a 50 ohm dummy load connected to the transmitter output?

Select	Answer
A	100 watts
B	400 watts
C	1.4 watts
D	353.5 watts

21. - G5C05

If three equal value resistors in series produce 450 ohms, what is the value of each resistor?

Select	Answer
A	175 ohms
B	1500 ohms
C	90 ohms
D	150 ohms

22. - G6A14

Which of the following is an advantage of ceramic capacitors as compared to other types of capacitors?

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

23. - G6B04

What is meant by the term ROM?

Select	Answer
A	Resistor Operated Memory
B	Random Operational Memory
C	Read Only Memory
D	Resistant to Overload Memory

24. - G7A10

Which symbol in figure G7-1 represents a Zener diode?

Select	Answer
A	Symbol 5
B	Symbol 11
C	Symbol 4
D	Symbol 1

25. - G7B14

Which of the following describes a linear amplifier?

Select	Answer
A	Any RF power amplifier used in conjunction with an amateur transceiver
B	A Class C high efficiency amplifier
C	An amplifier in which the output preserves the input waveform
D	An amplifier used as a frequency multiplier

26. - G7C08

What type of circuit is used in many FM receivers to convert signals coming from the IF amplifier to audio?

Select	Answer
A	Phase inverter
B	Discriminator
C	Mixer
D	Product detector

27. - G8A09

What control is typically adjusted for proper ALC setting on an amateur single sideband transceiver?

Select	Answer
A	The RF clipping level
B	Attenuator level
C	Transmit audio or microphone gain
D	Antenna inductance or capacitance

28. - G8B03

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

Select	Answer
A	Synthesizing
B	Cancellation
C	Phase inverting
D	Heterodyning

29. - G8C06

What action results from a failure to exchange information due to excessive transmission attempts when using PACTOR or WINMOR?

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

30. - G9A12

What standing wave ratio will result when connecting a 50 ohm feed line to a non-reactive load having 25 ohm impedance?

Select	Answer
A	You cannot determine SWR from impedance values
B	1.25:1
C	2:1
D	2.5:1

31. - G9B05

How does antenna height affect the horizontal (azimuthal) radiation pattern of a horizontal dipole HF antenna?

Select	Answer
A	If the antenna is less than 1/2 wavelength high, the azimuthal pattern is almost omnidirectional
B	Antenna height has no effect on the pattern
C	If the antenna is too high, the pattern becomes unpredictable
D	If the antenna is less than 1/2 wavelength high, radiation off the ends of the wire is eliminated

32. - G9C09

How does the gain of two 3-element horizontally polarized Yagi antennas spaced vertically 1/2 wavelength apart typically compare to the gain of a single 3-element Yagi?

Select	Answer
A	Approximately 9 dB higher
B	Approximately 6 dB higher
C	Approximately 3 dB higher
D	Approximately 1.5 dB higher

33. - G9D09

Which of the following is an application for a Beverage antenna?

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

34. - G0A08

Which of the following steps must an amateur operator take to ensure compliance with RF safety regulations when transmitter power exceeds levels specified in FCC Part 97.13?

Select	Answer
A	All of these choices are correct
B	Post a copy of FCC Part 97.13 in the station
C	Post a copy of OET Bulletin 65 in the station
D	Perform a routine RF exposure evaluation

35. - G0B03

Which size of fuse or circuit breaker would be appropriate to use with a circuit that uses AWG number 14 wiring?

Select	Answer
A	30 amperes
B	15 amperes
C	60 amperes
D	100 amperes

Figure G7-1