ORIGINAL MESSAGE:
At 07:37 PM 1/10/2006, Bill Coleman wrote:
>I'd wonder if you want AFC on at all when CQing. If more than one
>caller calls you at the same time, what frequency will the program
>tune to?
>
>You also might have nearby QRM that might cause the AFC to drift away
>from the CQ frequency.
>
>Would it be better to use a narrow filter and adjust for off-
>frequency callers by using RIT? I've also found that RTTY
>demodulators produce pretty good copy even if you are many dozen of
>Hz off frequency. This is what I've done in my limited RTTY experience.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Your concerns are quite justified. When I'm CQing with AFC on there
are times when two stations of near equal strength but slightly
different freqs will call. When that happens I do indeed grab the RIT
and do the best I can. This is pretty rare, though, maybe once or
twice a contest. Most of the time AFC does the job just fine. Nothing
wrong with doing it manually though.
I've never seen nearby QRM cause AFC to drift, but that's probably
because I use a relatively narrow bandwidth, 250 Hz. If they're
inside that bandwidth, they're not QRM, they're the next QSO. :-)
Bill, W6WRT
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