Just feed the Orion audio into a soundcard and run spectrum analysis
software. Vary the offset until you see the passband centered over
the sidetone frequency. Very quick, very easy.
73,
Barry N1EU
On 10/16/07, Ron Castro <ronc@sonic.net> wrote:
> I have an old 'boat anchor' signal generator that I use, but you can also
> use another rig running into a dummy load or a local ham you can hear on
> ground wave who can put out a dead carrier for a few seconds. I found that
> no adjustment was needed, even on the 300 Hz filter. After tweaking the
> settings, the defaults were still the best.
> > It seems that one really needs a stable steady
> > signal, both in frequency and level to do this job.
> >
> > Short of homebrewing a crystal calibrator (since
> > these seem to be few are far between these days,
> > even on ebay), what do people use for a good steady
> > signal source for this job. Off the air signals
> > seem to have enough QSB to be a problem and without
> > a second rig to use for a source, I was curious
> > what other people used...
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