[Elecraft] Raspy audio on ssb on one band

[Guy Olinger K2AV]

Is this only on one end of the band, high or low, or is it constant across
the entire band?

On Sat, Nov 12, 2011 at 10:01 PM, cbscholl <scholl at scholl.org> wrote:

> I bought the radio used earlier in the year. I believe that it is sn in
> late 2000 but it was to factory in 2010 for upgrades. I listened on same
> antenna with ic-765 and no issues. Are there and settings which are band
> dependent that could be causing the problem?
>
> Barney
>
> On Nov 12, 2011, at 9:28 PM, "w0mu [via Elecraft]" <
> ml-node+s365791n6989030h30 at n2.nabble.com> wrote:
>
> > The only distortion I have seen is with the NB on which he said he
> > checked.  Is this an early version of the radio?  Maybe this is a case
> > of oxidation on the connectors.  Only hearing it one band makes this a
> > very interesting problem.
> >
> > Mike W0MU
> >
> > J6M CQ WW DX CW Contest 2011
> > J6/W0MU November 21 - December 1 2011
> > W0MU-1 CC Cluster w0mu.net
> >
> >
> > On 11/12/2011 7:25 PM, Don Wilhelm wrote:
> >
> > > Whoops, I did not catch that on the first reading.  I concede and have
> > > no easy answers.  Even so, the SSB demodulation in the K3 is not band
> > > dependent either, so a good look at your antenna system and
> > > consideration for the reception of interfering signals from consumer
> > > devices are prime candidates for investigation.
> > >
> > > 73,
> > > Don W3FPR
> > >
> > > On 11/12/2011 9:15 PM, cbscholl wrote:
> > >> Why would rf feedback be causing an issue on receive?
> > >>
> > >> Barney
> > >>
> > >> On Nov 12, 2011, at 8:46 PM, "Don Wilhelm-4 [via Elecraft]"<[hidden
> email]>   wrote:
> > >>
> > >>> Barney,
> > >>>
> > >>> The most common cause for problems of that nature is RF feedback in
> the
> > >>> shack.  If you have another receiver, listen to the transmitted audio
> > >>> while the K3 is connected to a dummy load.  If there are no problems
> > >>> with that configuration, take a serious look at your antenna system
> for
> > >>> that troublesome band.
> > >>>
> > >>> There is nothing in the K3 modulation scheme that is band dependent
> - in
> > >>> other words, if it works OK on one band, it should work well on all
> > >>> bands unless something external to the K3 is causing a problem.
> > >>>
> > >>> 73,
> > >>> Don W3FPR
> > >>>
> > >>> On 11/12/2011 7:34 PM, cbscholl wrote:
> > >>>> I believe that I am hearing raspy or slightly distorted audio on
> receive on
> > >>>> my K3. It has current mods. I have noticed the problem only on 15
> meters.
> > >>>> The other band seem fine. Does anyone have any ideas or
> suggestions? Barney
> > >>>>
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