Re: [Elecraft] Raspy audio on ssb on one band

2011-11-13 Thread 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 sch...@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+s365791n6989030...@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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Re: [Elecraft] Raspy audio on ssb on one band

2011-11-13 Thread cbscholl
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

On Nov 13, 2011, at 2:42 PM, Guy, K2AV [via Elecraft] 
ml-node+s365791n6990641...@n2.nabble.com wrote:

 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 

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[Elecraft] Raspy audio on ssb on one band

2011-11-12 Thread cbscholl
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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Re: [Elecraft] Raspy audio on ssb on one band

2011-11-12 Thread W0MU Mike Fatchett
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.
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Re: [Elecraft] Raspy audio on ssb on one band

2011-11-12 Thread cbscholl
That was the first thing I looked at. 

Barney

On Nov 12, 2011, at 7:39 PM, w0mu [via Elecraft] 
ml-node+s365791n6988937...@n2.nabble.com wrote:

 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. 
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Re: [Elecraft] Raspy audio on ssb on one band

2011-11-12 Thread Don Wilhelm
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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Re: [Elecraft] Raspy audio on ssb on one band

2011-11-12 Thread cbscholl
Why would rf feedback be causing an issue on receive?

Barney

On Nov 12, 2011, at 8:46 PM, Don Wilhelm-4 [via Elecraft] 
ml-node+s365791n6989005...@n2.nabble.com 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 
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 below:
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Re: [Elecraft] Raspy audio on ssb on one band

2011-11-12 Thread Don Wilhelm
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]ml-node+s365791n6989005...@n2.nabble.com  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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Re: [Elecraft] Raspy audio on ssb on one band

2011-11-12 Thread W0MU Mike Fatchett
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]ml-node+s365791n6989005...@n2.nabble.com   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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Re: [Elecraft] Raspy audio on ssb on one band

2011-11-12 Thread 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+s365791n6989030...@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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