Steve Kallal wrote:
If I want to pass a 500 Hz signal, what bandwidth should I select in the
filter calibration? I guess the selected bandwidth isn't measured at 6 db
down, or is it?
As this is done by open loop control of a varicap control voltage, I'd
expect the relationship to vary considerably between units. If you need
finely tuned settings, you should probably set the filter using a
spectrum display, with white noise input, e.g. using the spectrogram
method. You can probably use your digital mode terminal program instead
of spectrogram.
I think it is probably safer to treat the displayed bandwidth as an
(approximately) monotonic function of true bandwidth, rather than
measuring the actual bandwidth.
--
David Woolley
Emails are not formal business letters, whatever businesses may want.
RFC1855 says there should be an address here, but, in a world of spam,
that is no longer good advice, as archive address hiding may not work.
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