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

Anonymous User

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

Logging in (or registering) will help the system to select questions that you need to focus on.

1. - G1A02

On which of the following bands is phone operation prohibited?

Select	Answer
A	160 meters
B	17 meters
C	12 meters
D	30 meters

2. - G1B05

When may music be transmitted by an amateur station?

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

3. - G1C04

Which of the following limitations apply to transmitter power on every amateur band?

Select	Answer
A	Power must be limited to 200 watts when transmitting between 14.100 MHz and 14.150 MHz
B	Power should be limited as necessary to avoid interference to another radio service on the frequency
C	Effective radiated power cannot exceed 1500 watts
D	Only the minimum power necessary to carry out the desired communications should be used

4. - G1D06

When must you add the special identifier "AG" after your call sign if you are a Technician Class licensee and have a CSCE for General Class operator privileges, but the FCC has not yet posted your upgrade on its website ?

Select	Answer
A	Whenever you operate using Technician frequency privileges
B	A special identifier is not required as long as your General Class license application has been filed with the FCC
C	Whenever you operate using General Class frequency privileges
D	Whenever you operate on any amateur frequency

5. - G1E13

On what bands may automatically controlled stations transmitting RTTY or data emissions communicate with other automatically controlled digital stations?

Select	Answer
A	Anywhere in the 1.25-meter or shorter wavelength bands, and in specified segments of the 80-meter through 2-meter bands
B	Only in the non-phone Extra Class segments of the bands
C	Anywhere in the non-phone segments of the 10-meter or shorter wavelength bands
D	On any band segment where digital operation is permitted

6. - G2A01

Which sideband is most commonly used for voice communications on frequencies of 14 MHz or higher?

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

7. - G2B08

What is the "DX window" in a voluntary band plan?

Select	Answer
A	An FCC rule that prohibits contacts between stations within the United States and possessions in that portion of the band
B	A portion of the band that should not be used for contacts between stations within the 48 contiguous United States
C	A portion of the band that has been voluntarily set aside for digital contacts only
D	An FCC rule that allows only digital contacts in that portion of the band

8. - G2C08

What prosign is sent to indicate the end of a formal message when using CW?

Select	Answer
A	SK
B	BK
C	KN
D	AR

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

10. - G2E02

How can a PACTOR modem or controller be used to determine if the channel is in use by other PACTOR stations?

Select	Answer
A	Unplug the data connector temporarily and see if the channel-busy indication is turned off
B	Put the modem or controller in a mode which allows monitoring communications without a connection
C	Transmit UI packets several times and wait to see if there is a response from another PACTOR station
D	Send the message: "Is this frequency in use?"

11. - G3A10

What causes HF propagation conditions to vary periodically in a 28 day cycle?

Select	Answer
A	The Sun's rotation on its axis
B	Long term oscillations in the upper atmosphere
C	Cyclic variation in the Earth's radiation belts
D	The position of the Moon in its orbit

12. - G3B09

What is the approximate maximum distance along the Earth's surface that is normally covered in one hop using the F2 region?

Select	Answer
A	12,000 miles
B	180 miles
C	2,500 miles
D	1,200 miles

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. - G4A05

What is a reason to use Automatic Level Control (ALC) with an RF power amplifier?

Select	Answer
A	To increase overall efficiency
B	To reduce harmonic radiation
C	To balance the transmitter audio frequency response
D	To reduce distortion due to excessive drive

15. - G4B07

What signals are used to conduct a two-tone test?

Select	Answer
A	Two audio signals of the same frequency shifted 90 degrees
B	Two non-harmonically related audio signals
C	Two audio frequency range square wave signals of equal amplitude
D	Two swept frequency tones

16. - G4C07

What is one good way to avoid unwanted effects of stray RF energy in an amateur station?

Select	Answer
A	Install an RF filter in series with the ground wire
B	Use a ground loop for best conductivity
C	Connect all equipment grounds together
D	Install a few ferrite beads on the ground wire where it connects to your station

17. - G4D01

What is the purpose of a speech processor as used in a modern transceiver?

Select	Answer
A	Decrease high-frequency voice output to prevent out of band operation
B	Increase the intelligibility of transmitted phone signals during poor conditions
C	Prevent distortion of voice signals
D	Increase transmitter bass response for more natural sounding SSB signals

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

19. - G5A11

Which of the following describes one method of impedance matching between two AC circuits?

Select	Answer
A	Increase the power output of the first circuit
B	Insert a circulator between the two circuits
C	Insert an LC network between the two circuits
D	Reduce the power output of the first circuit

20. - G5B01

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

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

21. - G5C18

What is the value in microfarads of a 4700 nanofarad (nF) capacitor?

Select	Answer
A	4.7 microfarads
B	47 microfarads
C	47,000 microfarads
D	0.47 microfarads

22. - G6A11

Which of the following solid state devices is most like a vacuum tube in its general operating characteristics?

Select	Answer
A	A varistor
B	A tunnel diode
C	A field effect transistor
D	A bipolar transistor

23. - G6B02

What is meant by the term MMIC?

Select	Answer
A	Multi Megabyte Integrated Circuit
B	Monolithic Microwave Integrated Circuit
C	Mode Modulated Integrated Circuit
D	Military Manufactured Integrated Circuit

24. - G7A11

Which symbol in figure G7-1 represents an NPN junction transistor?

Select	Answer
A	Symbol 7
B	Symbol 2
C	Symbol 11
D	Symbol 1

25. - G7B11

For which of the following modes is a Class C power stage appropriate for amplifying a modulated signal?

Select	Answer
A	CW
B	SSB
C	AM
D	All of these choices are correct

26. - G7C06

What should be the impedance of a low-pass filter as compared to the impedance of the transmission line into which it is inserted?

Select	Answer
A	Twice the transmission line impedance
B	Substantially higher
C	Substantially lower
D	About the same

27. - G8A05

What type of modulation varies the instantaneous power level of the RF signal?

Select	Answer
A	Phase modulation
B	Amplitude modulation
C	Frequency modulation
D	Frequency shift keying

28. - G8B08

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

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

29. - G8C01

Which of the following digital modes is designed to operate at extremely low signal strength on the HF bands?

Select	Answer
A	FSK441 and Hellschreiber
B	RTTY
C	JT9 and JT65
D	Clover

30. - G9A07

What must be done to prevent standing waves on an antenna feed line?

Select	Answer
A	The antenna feed point impedance must be matched to the characteristic impedance of the feed line
B	The antenna feed point must be at DC ground potential
C	The feed line must be cut to a length equal to an odd number of electrical quarter wavelengths
D	The feed line must be cut to a length equal to an even number of physical half wavelengths

31. - G9B09

Which of the following is an advantage of a horizontally polarized as compared to a vertically polarized HF antenna?

Select	Answer
A	Lower radiation resistance
B	Shorter Radials
C	Lower ground reflection losses
D	Lower feed point impedance

32. - G9C11

What is the purpose of a gamma match used with Yagi antennas?

Select	Answer
A	To match the relatively high feed point impedance to 50 ohms
B	To increase the main lobe gain
C	To match the relatively low feed point impedance to 50 ohms
D	To increase the front-to-back ratio

33. - G9D11

Which of the following is a disadvantage of multiband antennas?

Select	Answer
A	They present low impedance on all design frequencies
B	They must be fed with open wire line
C	They have poor harmonic rejection
D	They must be used with an antenna tuner

34. - G0A03

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

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

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	100 amperes
B	30 amperes
C	60 amperes
D	15 amperes

Figure G7-1