Question
Which of the following can be used to enter a transceiver’s operating frequency?
Answer Options
- A) A keypad or VFO knob
- B) A key click filter
- C) A CTCSS or DTMF drop-out generator
- D) A field programmable diode
Correct Answer: A
Explanation
The two main methods used to set the operating frequency on an amateur radio transceiver are the electronic controls. First, the operator can manually enter the exact frequency using a keypad (like a 10-digit pad).
Alternatively, they can slowly adjust the frequency using the main tuning dial, which controls the VFO (Variable Frequency Oscillator) knob. Some newer radios also allow for touch-screen entry, but the VFO knob and keypad are the traditional and most common methods of controlling the operating frequency.
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