Re: Compensating for VFO drift
Radio books from the 1960s or early 70s may be the best source of information on building stable VFOs. Before that people were more likely to be 'rock-bound' (crystal osc). After that synthesisers started appearing.
My guess is that much of the drift comes from the coil. Reducing the oscillator amplitude might help. Good VFO coils were usually purpose-built.
|