[Elecraft] Raspy audio on ssb on one band

[cbscholl]

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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