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Assignment 13

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1. 

T2B13 Which of the following is true of the use of SSB phone in amateur bands above 50 MHz?
a.
It is permitted only by holders of a General Class or higher license
c.
It is permitted in at least some portion of all the amateur bands above 50 MHz
b.
It is permitted only on repeaters
d.
It is permitted only on when power is limited to no more than 100 watts
 

 2. 

T4A01 Which of the following is true concerning the microphone connectors on amateur transceivers?
a.
All transceivers use the same microphone connector type
c.
All transceivers using the same connector type are wired identically
b.
Some connectors include push-to-talk and voltages for powering the microphone
d.
Un-keyed connectors allow any microphone to be connected
 

 3. 

T4A03 Which is a good reason to use a regulated power supply for communications equipment?
a.
It prevents voltage fluctuations from reaching sensitive circuits
c.
A fuse or circuit breaker regulates the power
b.
A regulated power supply has FCC approval
d.
Power consumption is independent of load
 

 4. 

T4B06 Which of the following controls could be used if the voice pitch of a single-sideband signal seems too high or low?
a.
The AGC or limiter
c.
The tone squelch
b.
The bandwidth selection
d.
The receiver RIT or clarifier
 

 5. 

T4B07 What does the term “RIT” mean?
a.
Receiver Input Tone
c.
Rectifier Inverter Test
b.
Receiver Incremental Tuning
d.
Remote Input Transmitter
 

 6. 

T4B08 What is the advantage of having multiple receive bandwidth choices on a multimode transceiver?
a.
Permits monitoring several modes at once
c.
Increases the number of frequencies that can be stored in memory
b.
Permits noise or interference reduction by selecting a bandwidth matching the mode
d.
Increases the amount of offset between receive and transmit frequencies
 

 7. 

T4B09 Which of the following is an appropriate receive filter bandwidth to select in order to minimize noise and interference for SSB reception?
a.
500 Hz
c.
2400 Hz
b.
1000 Hz
d.
5000 Hz
 

 8. 

T4B10 Which of the following is an appropriate receive filter bandwidth to select in order to minimize noise and interference for CW reception?
a.
500 Hz
c.
2400 Hz
b.
1000 Hz
d.
5000 Hz
 

 9. 

T4B12 What is the function of automatic gain control or AGC?
a.
To keep received audio relatively constant
c.
To eliminate RF on the station cabling
b.
To protect an antenna from lightning
d.
An asymmetric goniometer control used for antenna matching
 

 10. 

T7A01 Which term describes the ability of a receiver to detect the presence of a signal?
a.
Linearity
c.
Selectivity
b.
Sensitivity
d.
Total Harmonic Distortion
 

 11. 

T7A02 What is a transceiver?
a.
A type of antenna switch
c.
A component in a repeater which filters out unwanted interference
b.
A unit combining the functions of a transmitter and a receiver
d.
A type of antenna matching network
 

 12. 

T7A03 Which of the following is used to convert a radio signal from one frequency to another?
a.
Phase splitter
c.
Inverter
b.
Mixer
d.
Amplifier
 

 13. 

T7A04 Which term describes the ability of a receiver to discriminate between multiple signals?
a.
Discrimination ratio
c.
Selectivity
b.
Sensitivity
d.
Harmonic Distortion
 

 14. 

T7A05 What is the name of a circuit that generates a signal of a desired frequency?
a.
Reactance modulator
c.
Low-pass filter
b.
Product detector
d.
Oscillator
 

 15. 

T7A06 What device takes the output of a low-powered 28 MHz SSB exciter and produces a 222 MHz output signal?
a.
High-pass filter
c.
Transverter
b.
Low-pass filter
d.
Phase converter
 

 16. 

T7A08 Which of the following describes combining speech with an RF carrier signal?
a.
Impedance matching
c.
Modulation
b.
Oscillation
d.
Low-pass filtering
 

 17. 

T7A09 Which of the following devices is most useful for VHF weak-signal communication?
a.
A quarter-wave vertical antenna
c.
An omni-directional antenna
b.
A multi-mode VHF transceiver
d.
A mobile VHF FM transceiver
 

 18. 

T7A11 Where is an RF preamplifier installed?
a.
Between the antenna and receiver
c.
Between a transmitter and antenna tuner
b.
At the output of the transmitter's power amplifier
d.
At the receiver's audio output
 

 19. 

T8A01 Which of the following is a form of amplitude modulation?
a.
Spread-spectrum
c.
Single sideband
b.
Packet radio
d.
Phase shift keying
 

 20. 

T8A03 Which type of voice mode is most often used for long-distance (weak signal) contacts on the VHF and UHF bands?
a.
FM
c.
SSB
b.
DRM
d.
PM
 

 21. 

T8A05 Which of the following types of emission has the narrowest bandwidth?
a.
FM voice
c.
CW
b.
SSB voice
d.
Slow-scan TV
 

 22. 

T8A06 Which sideband is normally used for 10 meter HF, VHF and UHF single-sideband communications?
a.
Upper sideband
c.
Suppressed sideband
b.
Lower sideband
d.
Inverted sideband
 

 23. 

T8A07 What is the primary advantage of single sideband over FM for voice transmissions?
a.
SSB signals are easier to tune
c.
SSB signals have narrower bandwidth
b.
SSB signals are less susceptible to interference
d.
All of these choices are correct
 

 24. 

T8A08 What is the approximate bandwidth of a single sideband voice signal?
a.
1 kHz
c.
6 kHz
b.
3 kHz
d.
15 kHz
 

 25. 

T8A11 What is the approximate maximum bandwidth required to transmit a CW signal?
a.
2.4 kHz
c.
1000 Hz
b.
150 Hz
d.
15 kHz
 



 
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