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. - G1A08

Which of the following frequencies is within the General Class portion of the 80-meter band?

Select	Answer
A	2560 kHz
B	3650 kHz
C	1855 kHz
D	3560 kHz

2. - G1B09

When may an amateur station transmit communications in which the licensee or control operator has a pecuniary (monetary) interest?

Select	Answer
A	Never
B	Only when there is no other means of communications readily available
C	When other amateurs are being notified of the sale of any item with a monetary value less than $200 and such activity is not done on a regular basis
D	When other amateurs are being notified of the sale of apparatus normally used in an amateur station and such activity is not done on a regular basis

3. - G1C03

What is the maximum bandwidth permitted by FCC rules for Amateur Radio stations transmitting on USB frequencies in the 60-meter band?

Select	Answer
A	2.8 kHz
B	5.6 kHz
C	1.8 kHz
D	3 kHz

4. - G1D01

Who may receive 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	Only persons who once held an FCC issued Novice, Technician, or Technician Plus license
D	Anyone who held an FCC issued amateur radio license that has been expired for not less than 5 years and not more than 15 years

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

6. - G2A06

Which of the following is an advantage when using single sideband as compared to other analog voice modes on the HF amateur bands?

Select	Answer
A	Very high fidelity voice modulation
B	Ease of tuning on receive and immunity to impulse noise
C	Less subject to interference from atmospheric static crashes
D	Less bandwidth used and greater power efficiency

7. - G2B06

What is a practical way to avoid harmful interference on an apparently clear frequency before calling CQ on CW or phone?

Select	Answer
A	Send "QSY" on CW or if using phone, announce "the frequency is in use", then give your call and listen for a response
B	Send "QRL?" on CW, followed by your call sign; or, if using phone, ask if the frequency is in use, followed by your call sign
C	Send the letter "V" in Morse code several times and listen for a response or say "test" several times and listen for a response
D	Listen for 2 minutes before calling CQ

8. - G2C09

What does the Q signal "QSL" mean?

Select	Answer
A	Send slower
B	We have already confirmed by card
C	I acknowledge receipt
D	We have worked before

9. - G2D07

Which of the following is required by the FCC rules when operating in the 60-meter band?

Select	Answer
A	You must keep a record of the manufacturer of your equipment and the antenna used
B	You must keep a record of all third party traffic
C	If you are using other than a dipole antenna, you must keep a record of the gain of your antenna
D	You must keep a record of the date, time, frequency, power level and stations worked

10. - G2E09

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

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

11. - G3A13

What does the A-index indicate?

Select	Answer
A	The relative position of sunspots on the surface of the Sun
B	The amount of polarization of the Sun's electric field
C	The long term stability of the Earth's geomagnetic field
D	The solar radio flux at Boulder, Colorado

12. - G3B04

What is a reliable way to determine if the MUF is high enough to support skip propagation between your station and a distant location on frequencies between 14 and 30 MHz?

Select	Answer
A	Send a series of dots on the band and listen for echoes from your signal
B	Check the strength of TV signals from Western Europe
C	Check the strength of signals in the MF AM broadcast band
D	Listen for signals from an international beacon in the frequency range you plan to use

13. - G3C11

Which of the following antenna types will be most effective for skip communications on 40-meters during the day?

Select	Answer
A	A horizontal dipole placed between 1/8 and 1/4 wavelength above the ground
B	A vertical antenna
C	A right-hand circularly polarized antenna
D	A left-hand circularly polarized antenna

14. - G4A04

What reading on the plate current meter of a vacuum tube RF power amplifier indicates correct adjustment of the plate tuning control?

Select	Answer
A	A pronounced peak
B	A slow, rhythmic oscillation
C	A pronounced dip
D	No change will be observed

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. - G4C11

Which of the following is a function of a digital signal processor?

Select	Answer
A	To provide adequate grounding
B	To increase antenna bandwidth
C	To remove noise from received signals
D	To increase antenna gain

17. - G4D03

Which of the following can be the result of an incorrectly adjusted speech processor?

Select	Answer
A	Distorted speech
B	Splatter
C	All of these choices are correct
D	Excessive background pickup

18. - G4E07

Which of the following may cause interference to be heard in the receiver of an HF radio installed in a recent model vehicle?

Select	Answer
A	All of these choices are correct
B	The battery charging system
C	The vehicle control computer
D	The fuel delivery system

19. - G5A12

What is one reason to use an impedance matching transformer?

Select	Answer
A	To maximize the transfer of power
B	To minimize radiation resistance
C	To minimize transmitter power output
D	To reduce power supply ripple

20. - G5B11

What is the ratio of peak envelope power to average power for an unmodulated carrier?

Select	Answer
A	0.707
B	1.414
C	2.00
D	1.00

21. - G5C12

What is the capacitance of a 20 microfarad capacitor connected in series with a 50 microfarad capacitor?

Select	Answer
A	14.3 microfarads
B	1000 microfarads
C	70 microfarads
D	0.07 microfarads

22. - G6A03

What is the approximate junction threshold voltage of a germanium diode?

Select	Answer
A	1.0 volts
B	0.3 volts
C	0.1 volt
D	0.7 volts

23. - G6B04

What is meant by the term ROM?

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

24. - G7A04

What is the peak-inverse-voltage across the rectifier in a half-wave power supply?

Select	Answer
A	One-half the normal output voltage of the power supply
B	Two times the normal peak output voltage of the power supply
C	Equal to the normal output voltage of the power supply
D	One-half the normal peak output voltage of the power supply

25. - G7B07

What are the basic components of virtually all sine wave oscillators?

Select	Answer
A	An amplifier and a divider
B	A frequency multiplier and a mixer
C	A circulator and a filter operating in a feed-forward loop
D	A filter and an amplifier operating in a feedback loop

26. - G7C03

What circuit is used to process signals from the RF amplifier and local oscillator then send the result to the IF filter in a superheterodyne receiver?

Select	Answer
A	IF amplifier
B	Mixer
C	Detector
D	Balanced modulator

27. - G8A10

What is meant by the term flat-topping when referring to a single sideband phone transmission?

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

28. - G8B08

Why is it important to know the duty cycle of the mode you are using when transmitting?

Select	Answer
A	To aid in tuning your transmitter
B	To allow time for the other station to break in during a transmission
C	All of these choices are correct
D	Some modes have high duty cycles which could exceed the transmitter's average power rating.

29. - G8C05

In the PACTOR protocol, what is meant by an NAK response to a transmitted packet?

Select	Answer
A	The entire file has been received correctly
B	The receiver is busy decoding the packet
C	The receiver is reporting the packet was received without error
D	The receiver is requesting the packet be retransmitted

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

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

32. - G9C06

What configuration of the loops of a two-element quad antenna must be used for the antenna to operate as a beam antenna, assuming one of the elements is used as a reflector?

Select	Answer
A	The driven element must be fed with a balun transformer
B	The reflector element must be approximately 5 percent shorter than the driven element
C	There must be an open circuit in the driven element at the point opposite the feed point
D	The reflector element must be approximately 5 percent longer than the driven element

33. - G9D03

At what height above ground is an NVIS antenna typically installed?

Select	Answer
A	Between 1/10 and 1/4 wavelength
B	As close to 1/2 wavelength as possible
C	As close to one wavelength as possible
D	Height is not critical as long as it is significantly more than 1/2 wavelength

34. - G0A05

What must you do if an evaluation of your station shows RF energy radiated from your station exceeds permissible limits?

Select	Answer
A	File an Environmental Impact Statement (EIS-97) with the FCC
B	Take action to prevent human exposure to the excessive RF fields
C	All of these choices are correct
D	Secure written permission from your neighbors to operate above the controlled MPE limits

35. - G0B06

Why must the metal enclosure of every item of station equipment be grounded?

Select	Answer
A	It prevents signal overload
B	It prevents a blown fuse in the event of an internal short circuit
C	It ensures that hazardous voltages cannot appear on the chassis
D	It ensures that the neutral wire is grounded