[amsat-bb] IC-910H no audio on SO-50 downlink

[Paul Stoetzer]

The 910 is generally very effective at filtering out harmonics from
the transmitter. However, harmonics can be generated beyond the
transmitter by poor connections, bad feedlines, or a damaged antenna.
Check your entire antenna system to make sure there are not any
problems.

73,

Paul, N8HM

On Fri, Mar 27, 2020 at 12:59 PM Roy Dean via AMSAT-BB
<amsat-bb at amsat.org> wrote:
>
> >
> > All,Has anyone else had the problem of not hearing your own downlink when
> > working SO-50?  In the past I was able to hear myself, but lately I cannot
> > not.  I don't know if I change some setting or that the Icom is going bad.
> > Thanks for any help.  I appreciate it in advance.
> > Jim, Ke4kol
>
>
> Jim,
>
> With SO-50, especially, this is very common.   The 2m uplink has a harmonic
> very close to the downlink, which if not filtered out, can wipe out your
> local downlink whenever you are transmitting.  I'm not familiar with the
> 910 enough to know how well it does at this, though.
>
> You were getting in fine this morning, though (not sure if you copied my
> QSL)!
>
> --Roy
> K3RLD
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