Raspy audio on ssb on one band
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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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Is the noise blanker on?
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 5:34 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 > > -- > View this message in context: http://elecraft.365791.n2.nabble.com/Raspy-audio-on-ssb-on-one-band-tp6988925p6988925.html > Sent from the Elecraft mailing list archive at Nabble.com. > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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That was the first thing I looked at. Barney
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Re: Raspy audio on ssb on one band
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In reply to this post by cbscholl
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 > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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Why would rf feedback be causing an issue on receive? Barney
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Re: Raspy audio on ssb on one band
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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 >>> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:[hidden email] >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> >> >> If you reply to this email, your message will be added to the discussion below: >> http://elecraft.365791.n2.nabble.com/Raspy-audio-on-ssb-on-one-band-tp6988925p6989005.html >> To unsubscribe from Raspy audio on ssb on one band, click here. >> See how NAML generates this email > > -- > View this message in context: http://elecraft.365791.n2.nabble.com/Raspy-audio-on-ssb-on-one-band-tp6988925p6989022.html > Sent from the Elecraft mailing list archive at Nabble.com. > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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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 >>>> >>> ______________________________________________________________ >>> Elecraft mailing list >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>> Help: http://mailman.qth.net/mmfaq.htm >>> Post: mailto:[hidden email] >>> >>> This list hosted by: http://www.qsl.net >>> Please help support this email list: http://www.qsl.net/donate.html >>> >>> >>> If you reply to this email, your message will be added to the discussion below: >>> http://elecraft.365791.n2.nabble.com/Raspy-audio-on-ssb-on-one-band-tp6988925p6989005.html >>> To unsubscribe from Raspy audio on ssb on one band, click here. >>> See how NAML generates this email >> -- >> View this message in context: http://elecraft.365791.n2.nabble.com/Raspy-audio-on-ssb-on-one-band-tp6988925p6989022.html >> Sent from the Elecraft mailing list archive at Nabble.com. >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:[hidden email] >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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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
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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 <[hidden email]> 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]" < > [hidden email]> 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 > > >>>> > > >>> ______________________________________________________________ > > >>> Elecraft mailing list > > >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft > > >>> Help: http://mailman.qth.net/mmfaq.htm > > >>> Post: mailto:[hidden email] > > >>> > > >>> This list hosted by: http://www.qsl.net > > >>> Please help support this email list: http://www.qsl.net/donate.html > > >>> > > >>> > > >>> If you reply to this email, your message will be added to the > discussion below: > > >>> > http://elecraft.365791.n2.nabble.com/Raspy-audio-on-ssb-on-one-band-tp6988925p6989005.html > > >>> To unsubscribe from Raspy audio on ssb on one band, click here. > > >>> See how NAML generates this email > > >> -- > > >> View this message in context: > http://elecraft.365791.n2.nabble.com/Raspy-audio-on-ssb-on-one-band-tp6988925p6989022.html > > >> Sent from the Elecraft mailing list archive at Nabble.com. > > >> ______________________________________________________________ > > >> Elecraft mailing list > > >> Home: http://mailman.qth.net/mailman/listinfo/elecraft > > >> Help: http://mailman.qth.net/mmfaq.htm > > >> Post: mailto:[hidden email] > > >> > > >> This list hosted by: http://www.qsl.net > > >> Please help support this email list: http://www.qsl.net/donate.html > > >> > > > ______________________________________________________________ > > > Elecraft mailing list > > > Home: http://mailman.qth.net/mailman/listinfo/elecraft > > > Help: http://mailman.qth.net/mmfaq.htm > > > Post: mailto:[hidden email] > > > > > > This list hosted by: http://www.qsl.net > > > Please help support this email list: http://www.qsl.net/donate.html > > ______________________________________________________________ > > Elecraft mailing list > > Home: http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/mmfaq.htm > > Post: mailto:[hidden email] > > > > This list hosted by: http://www.qsl.net > > Please help support this email list: http://www.qsl.net/donate.html > > > > > > If you reply to this email, your message will be added to the discussion > below: > > > http://elecraft.365791.n2.nabble.com/Raspy-audio-on-ssb-on-one-band-tp6988925p6989030.html > > To unsubscribe from Raspy audio on ssb on one band, click here. > > See how NAML generates this email > > > -- > View this message in context: > http://elecraft.365791.n2.nabble.com/Raspy-audio-on-ssb-on-one-band-tp6988925p6989060.html > Sent from the Elecraft mailing list archive at Nabble.com. > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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I honestly do not know. I have only listened in ssb band. I have listed up at top or down in cq. I will try. Barney
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