B-003-14: Station accessories for telegraphy, radiotelephony, digital modes
B-003-14-01:
What do many amateurs use to help form good Morse code characters?
An electronic keyer
A key-operated on/off switch
A notch filter
A DTMF keypad
B-003-14-02:
Where would you connect a microphone for voice operation?
To a transceiver
To a power supply
To an antenna switch
To an antenna
B-003-14-03:
What would you connect to a transceiver for voice operation?
A microphone
A receiver audio filter
A terminal-voice controller
A splatter filter
B-003-14-04:
Why might a dummy antenna get warm when in use?
Because it changes RF energy into heat
Because it absorbs static electricity
Because it stores radio waves
Because it stores electric current
B-003-14-05:
What is the circuit called which causes a transmitter to automatically transmit when an operator speaks into its microphone?
VOX
VXO
VCO
VFO
B-003-14-06:
What is the reason for using a properly adjusted speech processor with a single-sideband phone transmitter?
It improves signal intelligibility at the receiver
It reduces average transmitter power requirements
It reduces unwanted noise pickup from the microphone
It improves voice frequency fidelity
B-003-14-07:
If a single-sideband phone transmitter is 100% modulated, what will a speech processor do to the transmitter's power?
It will add nothing to the output PEP
It will increase the output PEP
It will decrease the peak power output
It will decrease the average power output
B-003-14-08:
When switching from receive to transmit:
the receiver should be muted
the transmit oscillator should be turned off
the receiving antenna should be connected
the power supply should be off
B-003-14-09:
A switching system to enable the use of one antenna for a transmitter and receiver should also:
disable the unit not being used
ground the antenna on receive
switch between meters
disconnect the antenna tuner
B-003-14-10:
An antenna changeover switch in a transmitter-receiver combination is necessary:
so that one antenna can be used for transmitter and receiver
to change antennas for operation on other frequencies
to prevent RF currents entering the receiver circuits
to allow more than one transmitter to be used
B-003-14-11:
Which of the following components could be used as a dynamic microphone?
loudspeaker
crystal earpiece
resistor
capacitor
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Color key:
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● = Review
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● = Learned
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● = Incorrect answer
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