Canadian Basic pool, section 3-14

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Subelement 3

Station Assembly, Practice and Safety

Section 3-14

station accessories for telegraphy, radiotelephony, digital modes

3-14-01

What do many amateurs use to help form good Morse code characters?

Correct Answer
A.
An electronic keyer
B.
A key-operated on/off switch
C.
A notch filter
D.
A DTMF keypad

3-14-01

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3-14-02

Where would you connect a microphone for voice operation?

Correct Answer
A.
To a transceiver
B.
To a power supply
C.
To an antenna switch
D.
To an antenna

3-14-02

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3-14-03

What would you connect to a transceiver for voice operation?

A.
A receiver audio filter
B.
A terminal-voice controller
Correct Answer
C.
A microphone
D.
A splatter filter

3-14-03

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3-14-04

Why might a dummy antenna get warm when in use?

A.
Because it absorbs static electricity
B.
Because it stores radio waves
Correct Answer
C.
Because it changes RF energy into heat
D.
Because it stores electric current

3-14-04

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3-14-05

What is the circuit called which causes a transmitter to automatically transmit when an operator speaks into its microphone?

A.
VXO
B.
VCO
C.
VFO
Correct Answer
D.
VOX

3-14-05

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3-14-06

What is the reason for using a properly adjusted speech processor with a singlesideband phone transmitter?

Correct Answer
A.
It improves signal intelligibility at the receiver
B.
It reduces average transmitter power requirements
C.
It reduces unwanted noise pickup from the microphone
D.
It improves voice frequency fidelity

3-14-06

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3-14-07

If a single-sideband phone transmitter is 100% modulated, what will a speech processor do to the transmitter's power?

Correct Answer
A.
It will add nothing to the output PEP
B.
It will increase the output PEP
C.
It will decrease the peak power output
D.
It will decrease the average power output

3-14-07

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3-14-08

When switching from receive to transmit:

Correct Answer
A.
the receiver should be muted
B.
the transmit oscillator should be turned off
C.
the receiving antenna should be connected
D.
the power supply should be off

3-14-08

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3-14-09

A switching system to enable the use of one antenna for a transmitter and receiver should also:

A.
ground the antenna on receive
Correct Answer
B.
disable the unit not being used
C.
switch between meters
D.
disconnect the antenna tuner

3-14-09

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3-14-10

An antenna changeover switch in a transmitter-receiver combination is necessary:

Correct Answer
A.
so that one antenna can be used for transmitter and receiver
B.
to change antennas for operation on other frequencies
C.
to prevent RF currents entering the receiver circuits
D.
to allow more than one transmitter to be used

3-14-10

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3-14-11

Which of the following components could be used as a dynamic microphone?

A.
crystal earpiece
B.
resistor
Correct Answer
C.
loudspeaker
D.
capacitor

3-14-11

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