What is the function of the Variable Frequency Oscillator (VFO) circuit in a transceiver?
Set the receive and transmit frequency✓Bonne réponse
Provide automatic frequency control
Inject a variable frequency to allow CW reception
Generate and demodulate single sideband signals
Explication
The VFO is the tunable oscillator whose frequency, mixed with the radio's fixed conversion frequencies, determines where the radio listens and where it transmits, which is why turning the tuning knob moves both. Automatic frequency control and SSB generation are handled by other circuits.