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	3650 kHz
B	3560 kHz
C	1855 kHz
D	2560 kHz

2. - G1B08

When choosing a transmitting frequency, what should you do to comply with good amateur practice?

Select	Answer
A	All of these choices are correct
B	Follow generally accepted band plans agreed to by the Amateur Radio community
C	Insure that the frequency and mode selected are within your license class privileges
D	Monitor the frequency before transmitting

3. - G1C09

What is the maximum symbol rate permitted for RTTY or data emission transmitted on the 1.25-meter and 70-centimeter bands?

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

4. - G1D11

If a person has an expired FCC issued amateur radio license of General Class or higher, what is required before they can receive a new license?

Select	Answer
A	They must have a letter from the FCC showing they once held an amateur or commercial license
B	The applicant must be able to produce a copy of a page from a call book published in the USA showing his or her name and address
C	There are no requirements other than being able to show a copy of the expired license
D	The applicant must pass the current element 2 exam

5. - G1E12

Under what circumstances are messages that are sent via digital modes exempt from Part 97 third party rules that apply to other modes of communication?

Select	Answer
A	When messages are not encrypted
B	When messages are encrypted
C	When under automatic control
D	Under no circumstances

6. - G2A11

What does the expression "CQ DX" usually indicate?

Select	Answer
A	The caller is listening for a station in Germany
B	The caller is looking for any station outside their own country
C	A distress call
D	A general call for any station

7. - G2B01

Which of the following is true concerning access to frequencies in non-emergency situations?

Select	Answer
A	Contest operations must always yield to non-contest use of frequencies
B	Except during FCC declared emergencies, no one has priority access to frequencies
C	Nets always have priority
D	QSOs in progress always have priority

8. - G2C05

What is the best speed to use when answering a CQ in Morse code?

Select	Answer
A	At the standard calling speed of 5 wpm
B	The speed at which the CQ was sent
C	The fastest speed at which you are comfortable copying
D	A slow speed until contact is established

9. - G2D03

What skills learned during hidden transmitter hunts are of help to the Amateur Auxiliary?

Select	Answer
A	Identification of different call signs
B	Identification of out of band operation
C	Direction finding used to locate stations violating FCC Rules
D	Hunters have an opportunity to transmit on non-amateur frequencies

10. - G2E12

Which of the following describes a waterfall display?

Select	Answer
A	Frequency is horizontal, signal strength is vertical, time is intensity
B	Frequency is vertical, signal strength is horizontal, time is intensity
C	Frequency is horizontal, signal strength is intensity, time is vertical
D	Frequency is vertical, signal strength is intensity, time is horizontal

11. - G3A04

Which of the following are least reliable for long distance communications during periods of low solar activity?

Select	Answer
A	15 meters, 12 meters and 10 meters
B	30 meters and 20 meters
C	80 meters and 160 meters
D	60 meters and 40 meters

12. - G3B06

What usually happens to radio waves with frequencies below the LUF?

Select	Answer
A	They pass through the ionosphere
B	They are bent back to the Earth
C	They are completely absorbed by the ionosphere
D	They are bent and trapped in the ionosphere to circle the Earth

13. - G3C09

What type of radio wave propagation allows a signal to be detected at a distance too far for ground wave propagation but too near for normal sky-wave propagation?

Select	Answer
A	Sporadic-E skip
B	Scatter
C	Short-path skip
D	Faraday rotation

14. - G4A09

Why is a time delay sometimes included in a transmitter keying circuit?

Select	Answer
A	To prevent stations from interfering with one another
B	To allow time for transmit-receive changeover operations to complete properly before RF output is allowed
C	To allow time for a warning signal to be sent to other stations
D	To allow the transmitter power regulators to charge properly

15. - G4B04

What signal source is connected to the vertical input of an oscilloscope when checking the RF envelope pattern of a transmitted signal?

Select	Answer
A	The attenuated RF output of the transmitter
B	The local oscillator of the transmitter
C	The transmitter balanced mixer output
D	An external RF oscillator

16. - G4C01

Which of the following might be useful in reducing RF interference to audio frequency devices?

Select	Answer
A	Forward-biased diode
B	Bypass inductor
C	Reverse-biased diode
D	Bypass capacitor

17. - G4D03

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

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

18. - G4E05

Which of the following most limits the effectiveness of an HF mobile transceiver operating in the 75-meter band?

Select	Answer
A	The wire gauge of the DC power line to the transceiver
B	The antenna system
C	FCC rules limiting mobile output power on the 75-meter band
D	"Picket Fencing" signal variation

19. - G5A12

What is one reason to use an impedance matching transformer?

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

20. - G5B01

What dB change represents a two-times increase or decrease in power?

Select	Answer
A	Approximately 6 dB
B	Approximately 12 dB
C	Approximately 3 dB
D	Approximately 2 dB

21. - G5C10

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

Select	Answer
A	3.3 henrys
B	0.30 henrys
C	30 millihenrys
D	3.3 millihenrys

22. - G6A17

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

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

23. - G6B14

Which of these connector types is commonly used for audio signals in Amateur Radio stations?

Select	Answer
A	PL-259
B	BNC
C	Type N
D	RCA Phono

24. - G7A05

What portion of the AC cycle is converted to DC by a half-wave rectifier?

Select	Answer
A	360 degrees
B	180 degrees
C	90 degrees
D	270 degrees

25. - G7B05

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

Select	Answer
A	8
B	16
C	3
D	6

26. - G7C10

How is Digital Signal Processor filtering accomplished?

Select	Answer
A	By using direct signal phasing
B	By differential spurious phasing
C	By converting the signal from analog to digital and using digital processing
D	By converting the signal from digital to analog and taking the difference of mixing products

27. - G8A06

What is one advantage of carrier suppression in a single sideband phone transmission versus full carrier amplitude modulation?

Select	Answer
A	Available transmitter power can be used more effectively
B	Simpler receiving equipment can be used
C	Greater modulation percentage is obtainable with lower distortion
D	Audio fidelity is improved

28. - G8B03

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

Select	Answer
A	Cancellation
B	Heterodyning
C	Synthesizing
D	Phase inverting

29. - G8C09

What does the number 31 represent in "PSK31"?

Select	Answer
A	The year in which PSK31 was invented
B	The version of the PSK protocol
C	The number of characters that can be represented by PSK31
D	The approximate transmitted symbol rate

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	2:1
B	1.25:1
C	You cannot determine SWR from impedance values
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 too high, the pattern becomes unpredictable
B	If the antenna is less than 1/2 wavelength high, radiation off the ends of the wire is eliminated
C	If the antenna is less than 1/2 wavelength high, the azimuthal pattern is almost omnidirectional
D	Antenna height has no effect on the pattern

32. - G9C16

How does the gain of a two-element delta-loop beam compare to the gain of a two-element quad antenna?

Select	Answer
A	2.54 dB higher
B	3 dB higher
C	3 dB lower
D	About the same

33. - G9D08

Why is a Beverage antenna not used for transmitting?

Select	Answer
A	It has poor directivity
B	It has high losses compared to other types of antennas
C	All of these choices are correct
D	Its impedance is too low for effective matching

34. - G0A10

What is one thing that can be done if evaluation shows that a neighbor might receive more than the allowable limit of RF exposure from the main lobe of a directional antenna?

Select	Answer
A	Post a warning sign that is clearly visible to the neighbor
B	Change to a non-polarized antenna with higher gain
C	Take precautions to ensure that the antenna cannot be pointed in their direction
D	Use an antenna with a higher front-to-back ratio

35. - G0B06

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

Select	Answer
A	It ensures that the neutral wire is grounded
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 prevents signal overload