Your software has access to the entire transceiver pass band -- it
can hear what you would QRM if you transmitted. If there is no
signal within the transceiver pass band, then the range of
frequencies on which you will transmit is clear, and you can
transmit with confidence that you aren't QRMing an ongoing QSO.
73,
Dave, AA6YQ
--- In [email protected], "expeditionradio"
<[EMAIL PROTECTED]> wrote:
>
> --- In [email protected], Bill Turner <dezrat@> wrote:
> >
> > ORIGINAL MESSAGE:
> >
> > At 01:41 AM 6/22/2006, expeditionradio wrote:
> >
> > >I can sit here and decode and participate in an Olivia 500/16
> > >QSO on 20meters that I cannot hear by ear and I cannot see any
signal
> > >on the waterfall. Is that frequency "busy"?
> >
> > *********** REPLY SEPARATOR ***********
> >
> > Of course it is "busy". If software can find a signal, that
channel
> > is busy. Whether you can hear it by ear is irrelevant.
> >
> > Bill, W6WRT
> >
>
> Hi Bill,
>
> If my "software" isn't within 100Hz of the signal, I can't decode
it,
> so I don't know it is there. Is the frequency still busy?
>
> Bonnie KQ6XA
>
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