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. - G1A13

What is the appropriate action if, when operating on either the 30-meter or 60-meter bands, a station in the primary service interferes with your contact?

Select	Answer
A	Increase your transmitter's power to overcome the interference
B	Notify the FCCs regional Engineer in Charge of the interference
C	Move to a clear frequency or stop transmitting
D	Attempt to contact the station and request that it stop the interference

2. - G1B06

When is an amateur station permitted to transmit secret codes?

Select	Answer
A	During a declared communications emergency
B	Only when the information is of a routine, personal nature
C	To control a space station
D	Only with Special Temporary Authorization from the FCC

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	300 baud
C	56 kilobaud
D	1200 baud

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

5. - G1E03

What is required to conduct communications with a digital station operating under automatic control outside the automatic control band segments?

Select	Answer
A	The station initiating the contact must be under local or remote control
B	The control operator of the interrogating station must hold an Extra Class license
C	No third party traffic maybe be transmitted
D	The interrogating transmission must be made by another automatically controlled station

6. - G2A11

What does the expression "CQ DX" usually indicate?

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

7. - G2B04

When selecting a CW transmitting frequency, what minimum separation should be used to minimize interference to stations on adjacent frequencies?

Select	Answer
A	150 to 500 Hz
B	5 to 50 Hz
C	3 to 6 kHz
D	1 to 3 kHz

8. - G2C02

What should you do if a CW station sends "QRS"?

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

9. - G2D03

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

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

10. - G2E05

What is the standard sideband used to generate a JT65 or JT9 digital signal when using AFSK in any amateur band?

Select	Answer
A	SSB
B	LSB
C	USB
D	DSB

11. - G3A13

What does the A-index indicate?

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

12. - G3B12

What factor or factors affect the MUF?

Select	Answer
A	All of these choices are correct
B	Time of day and season
C	Path distance and location
D	Solar radiation and ionospheric disturbances

13. - G3C07

What makes HF scatter signals often sound distorted?

Select	Answer
A	The E-region is not present
B	The ionospheric layer involved is unstable
C	Ground waves are absorbing much of the signal
D	Energy is scattered into the skip zone through several different radio wave paths

14. - G4A11

Which of the following is a use for the IF shift control on a receiver?

Select	Answer
A	To avoid interference from stations very close to the receive frequency
B	To permit listening on a different frequency from that on which you are transmitting
C	To tune in stations that are slightly off frequency without changing your transmit frequency
D	To change frequency rapidly

15. - G4B12

What problem can occur when making measurements on an antenna system with an antenna analyzer?

Select	Answer
A	Strong signals from nearby transmitters can affect the accuracy of measurements
B	Permanent damage to the analyzer may occur if it is operated into a high SWR
C	The analyzer can be damaged if measurements outside the ham bands are attempted
D	Connecting the analyzer to an antenna can cause it to absorb harmonics

16. - G4C01

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

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

17. - G4D09

What frequency range is occupied by a 3 kHz USB signal with the displayed carrier frequency set to 14.347 MHz?

Select	Answer
A	14.347 to 14.350 MHz
B	14.347 to 14.647 MHz
C	14.3455 to 14.3485 MHz
D	14.344 to 14.347 MHz

18. - G4E05

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

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

19. - G5A04

Which of the following causes opposition to the flow of alternating current in a capacitor?

Select	Answer
A	Reluctance
B	Reactance
C	Conductance
D	Admittance

20. - G5B10

What percentage of power loss would result from a transmission line loss of 1 dB?

Select	Answer
A	10.9 percent
B	20.5 percent
C	12.2 percent
D	25.9 percent

21. - G5C03

Which of the following components should be added to an existing resistor to increase the resistance?

Select	Answer
A	A capacitor in parallel
B	A resistor in parallel
C	A resistor in series
D	A capacitor in series

22. - G6A02

What is an advantage of the low internal resistance of nickel-cadmium batteries?

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

23. - G6B01

Which of the following is an analog integrated circuit?

Select	Answer
A	NAND Gate
B	Linear voltage regulator
C	Frequency Counter
D	Microprocessor

24. - G7A06

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

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

25. - G7B06

What is a shift register?

Select	Answer
A	A clocked array of circuits that passes data in steps along the array
B	An analog mixer
C	An array of operational amplifiers used for tri-state arithmetic operations
D	A digital mixer

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	Detector
B	Balanced modulator
C	Mixer
D	IF amplifier

27. - G8A09

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

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

28. - G8B01

What receiver stage combines a 14.250 MHz input signal with a 13.795 MHz oscillator signal to produce a 455 kHz intermediate frequency (IF) signal?

Select	Answer
A	BFO
B	VFO
C	Mixer
D	Discriminator

29. - G8C08

Which of the following statements is true about PSK31?

Select	Answer
A	Upper case letters make the signal stronger
B	Higher power is needed as compared to RTTY for similar error rates
C	Varicode Error Correction is used to ensure accurate message reception
D	Upper case letters use longer Varicode signals and thus slow down transmission

30. - G9A10

What standing wave ratio will result when connecting a 50 ohm feed line to a non-reactive load having 10 ohm impedance?

Select	Answer
A	50:1
B	5:1
C	2:1
D	1:5

31. - G9B06

Where should the radial wires of a ground-mounted vertical antenna system be placed?

Select	Answer
A	At the center of the antenna
B	Parallel to the antenna element
C	On the surface of the Earth or buried a few inches below the ground
D	As high as possible above the ground

32. - G9C19

How does antenna gain stated in dBi compare to gain stated in dBd for the same antenna?

Select	Answer
A	dBi gain figures are 2.15 dB lower then dBd gain figures
B	dBi gain figures are the same as the square root of dBd gain figures multiplied by 2.15
C	dBi gain figures are the reciprocal of dBd gain figures + 2.15 dB
D	dBi gain figures are 2.15 dB higher than dBd gain figures

33. - G9D08

Why is a Beverage antenna not used for transmitting?

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

34. - G0A03

How can you determine that your station complies with FCC RF exposure regulations?

Select	Answer
A	By calculation based on FCC OET Bulletin 65
B	By measurement of field strength using calibrated equipment
C	All of these choices are correct
D	By calculation based on computer modeling

35. - G0B08

What should be done by any person preparing to climb a tower that supports electrically powered devices?

Select	Answer
A	Make sure all circuits that supply power to the tower are locked out and tagged
B	All of these choices are correct
C	Notify the electric company that a person will be working on the tower
D	Unground the base of the tower