Technician exam question T4B02
Subelement T4, AMATEUR RADIO PRACTICES· Group T4B
Which of the following can be used to enter a transceiver’s operating frequency?
- A.The keypad or VFO knob (correct answer)
- B.The CTCSS or DTMF encoder
- C.The Automatic Frequency Control
- D.All these choices are correct
WhyA transceiver's operating frequency can be entered using the keypad or the VFO knob. A transceiver's operating frequency is set directly with its keypad or VFO tuning knob, answer A. CTCSS/DTMF encoders (B) generate sub-audible or touch-tone signaling tones, not frequency changes, Automatic Frequency Control (C) is a receiver circuit that tracks a signal on its own rather than something used to enter a frequency, and D is wrong because only A actually describes a frequency-entry method.
Published 2026-08-28 · Last updated 2026-08-28 · Question text is verbatim from the 2026-2030 NCVEC Element 2 pool (public domain); the explanation above is original writing, see our methodology.
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