Stephan Grossklass wrote:

Pierre L schrieb:

I'll bet that with many digitally-tuned radios,
there's drifting too, back and forth, only, because the display stays fixed
at the frequency you punched-in, you don't notice it.

Indeed, receivers with PLL synthesizers also drift. However, their
accuracy only depends on the reference crystal (that's why TCXOs exist),
which eliminates a lot of other sources of drift found in rigs with
analog frequency synthesis. As for an example of "digitals" drifting, my
ICF-SW7600G will drift a few 100 Hz if the temperature changes by a few
°C, it also needs some warmup until fine tuning no longer needs to be
adjusted for SSB.

Do you know what the first I.F. frequency is for the '7600'?


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