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. - G1A11

When General Class licensees are not permitted to use the entire voice portion of a particular band, which portion of the voice segment is generally available to them?

Select	Answer
A	The upper frequency end
B	The lower frequency end
C	The lower frequency end on frequencies below 7.3 MHz and the upper end on frequencies above 14.150 MHz
D	The upper frequency end on frequencies below 7.3 MHz and the lower end on frequencies above 14.150 MHz

2. - G1B01

What is the maximum height above ground to which an antenna structure may be erected without requiring notification to the FAA and registration with the FCC, provided it is not at or near a public use airport?

Select	Answer
A	200 feet
B	100 feet
C	300 feet
D	50 feet

3. - G1C02

What is the maximum transmitting power an amateur station may use on the 12-meter band?

Select	Answer
A	1500 watts PEP output
B	An effective radiated power equivalent to 100 watts from a half-wave dipole
C	50 watts PEP output
D	200 watts PEP output

4. - G1D03

On which of the following band segments may you operate if you are a Technician Class operator and have a CSCE for General Class privileges?

Select	Answer
A	On any General or Technician Class band segment except 30-meters and 60-meters
B	Only the Technician band segments until your upgrade is posted in the FCC database
C	On any General or Technician Class band segment
D	Only on the Technician band segments until your license arrives in the mail

5. - G1E02

When may a 10-meter repeater retransmit the 2-meter signal from a station having a Technician Class control operator?

Select	Answer
A	Only during an FCC declared general state of communications emergency
B	Under no circumstances
C	Only if the station on 10-meters is operating under a Special Temporary Authorization allowing such retransmission
D	Only if the 10-meter repeater control operator holds at least a General Class license

6. - G2A04

Which mode is most commonly used for voice communications on the 17-meter and 12-meter bands?

Select	Answer
A	Double sideband
B	Vestigial sideband
C	Lower sideband
D	Upper sideband

7. - G2B10

When may the FCC restrict normal frequency operations of amateur stations participating in RACES?

Select	Answer
A	When they declare a temporary state of communication emergency
B	When they seize your equipment for use in disaster communications
C	When the President's War Emergency Powers have been invoked
D	Only when all amateur stations are instructed to stop transmitting

8. - G2C01

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

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

9. - G2D09

What information is traditionally contained in a station log?

Select	Answer
A	Call sign of station contacted and the signal report given
B	Date and time of contact
C	All of these choices are correct
D	Band and/or frequency of the contact

10. - G2E06

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

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

11. - G3A16

What is a possible benefit to radio communications resulting from periods of high geomagnetic activity?

Select	Answer
A	Improved HF long path propagation
B	Reduced long delayed echoes
C	Higher signal strength for HF signals passing through the polar regions
D	Auroras that can reflect VHF signals

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

13. - G3C12

Which ionospheric layer is the most absorbent of long skip signals during daylight hours on frequencies below 10 MHz?

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

14. - G4A14

What is likely to happen if a transceiver's ALC system is not set properly when transmitting AFSK signals with the radio using single sideband mode?

Select	Answer
A	ALC will invert the modulation of the AFSK mode
B	Improper action of ALC distorts the signal and can cause spurious emissions
C	When using digital modes, too much ALC activity can cause the transmitter to overheat
D	All of these choices are correct

15. - G4B11

Which of the following must be connected to an antenna analyzer when it is being used for SWR measurements?

Select	Answer
A	All of these choices are correct
B	Transmitter
C	Antenna and feed line
D	Receiver

16. - G4C08

Which of the following would reduce RF interference caused by common-mode current on an audio cable?

Select	Answer
A	Adding shunt inductors to the conductors
B	Placing a ferrite choke around the cable
C	Adding an additional insulating jacket to the cable
D	Adding series capacitors to the conductors

17. - G4D03

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

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

18. - G4E04

Why is it best NOT to draw the DC power for a 100 watt HF transceiver from a vehicle's auxiliary power socket?

Select	Answer
A	The socket's wiring may be inadequate for the current drawn by the transceiver
B	The DC polarity of the socket is reversed from the polarity of modern HF transceivers
C	The socket is not wired with an RF-shielded power cable
D	Drawing more than 50 watts from this socket could cause the engine to overheat

19. - G5A03

Which of the following causes opposition to the flow of alternating current in an inductor?

Select	Answer
A	Admittance
B	Reluctance
C	Reactance
D	Conductance

20. - G5B13

What is the output PEP of an unmodulated carrier if an average reading wattmeter connected to the transmitter output indicates 1060 watts?

Select	Answer
A	1500 watts
B	1060 watts
C	2120 watts
D	530 watts

21. - G5C08

What is the equivalent capacitance of two 5.0 nanofarad capacitors and one 750 picofarad capacitor connected in parallel?

Select	Answer
A	3583 picofarads
B	10.750 nanofarads
C	1733 picofarads
D	576.9 nanofarads

22. - G6A17

Which of the following is a reason not to use wire-wound resistors in an RF circuit?

Select	Answer
A	The resistor could overheat
B	The resistor's inductance could make circuit performance unpredictable
C	The resistor's tolerance value would not be adequate for such a circuit
D	The resistor's internal capacitance would detune the circuit

23. - G6B17

What is the general description of a DIN type connector?

Select	Answer
A	A special connector for microwave interfacing
B	A DC power connector rated for currents between 30 and 50 amperes
C	A special watertight connector for use in marine applications
D	A family of multiple circuit connectors suitable for audio and control signals

24. - G7A10

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

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

25. - 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

26. - G7C09

Which of the following is needed for a Digital Signal Processor IF filter?

Select	Answer
A	A digital processor chip
B	All of the these choices are correct
C	An analog to digital converter
D	A digital to analog converter

27. - G8A11

What is the modulation envelope of an AM signal?

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

28. - G8B05

What is the approximate bandwidth of a PACTOR3 signal at maximum data rate?

Select	Answer
A	500 Hz
B	2300 Hz
C	31.5 Hz
D	1800 Hz

29. - G8C04

Which of the following describes Baudot code?

Select	Answer
A	A 7-bit code with start, stop and parity bits
B	A code using SELCAL and LISTEN
C	A code using error detection and correction
D	A 5-bit code with additional start and stop bits

30. - G9A06

In what units is RF feed line loss usually expressed?

Select	Answer
A	Ohms per 1000 feet
B	Decibels per 100 feet
C	Ohms per 100 feet
D	Decibels per 1000 feet

31. - G9B12

What is the approximate length for a 1/4 wave vertical antenna cut for 28.5 MHz?

Select	Answer
A	8 feet
B	21 feet
C	11 feet
D	16 feet

32. - G9C13

Approximately how long is each side of the driven element of a quad antenna?

Select	Answer
A	1 wavelength
B	1/4 wavelength
C	3/4 wavelength
D	1/2 wavelength

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 receiving for low HF bands
D	Directional transmitting for low HF bands

34. - G0A12

What precaution should you take whenever you make adjustments or repairs to an antenna?

Select	Answer
A	Wear a radiation badge
B	Ensure that you and the antenna structure are grounded
C	Turn off the transmitter and disconnect the feed line
D	All of these choices are correct

35. - G0B10

Which of the following is a danger from lead-tin solder?

Select	Answer
A	Lead can contaminate food if hands are not washed carefully after handling the solder
B	RF energy can convert the lead into a poisonous gas
C	High voltages can cause lead-tin solder to disintegrate suddenly
D	Tin in the solder can "cold flow" causing shorts in the circuit

Figure G7-1