[Elecraft] No transmit SSB in K3 Rx works fine.

[Gary Smith]

Sorry, should have worded the subject line 
better so I corrected it here...

> Folks,
> 
> Some history... 
> 
> I had to send my K3s to Elecraft for 
> repair. I purchased a K3 a couple years 
> back to set up for a close friend and 
> though it has all the factory updates, it 
> had a low serial # and he wanted one with 
> a high one. I sold him my equally updated 
> K3 with a higher Serial # and kept this 
> one. It has sat on the shelf as my backup 
> radio for the last two years
> 
> I rarely use SSB, only CW & have maybe 3-4 
> SSB conversations/year. With the remote 
> preamp attached it became problematic to 
> the wiring and to simplify things I 
> updated the K3 with the new KXV3B and 
> KIO3B boards so it will match the 
> connections of the K3s and simplify wiring 
> issues and not need an external soundcard.
> 
> I found I could not transmit with WSJT-X 
> but I could receive and decode just fine, 
> CAT and Test PTT worked perfectly, 
> clicking on tune showed the K3 led red as 
> in transmit but zero output regardless of 
> line level or power out adjustment. The 
> DATA MD is indeed set to DATA A. The 
> computer sound settings showed the K3s USB 
> was selected for default and the levels 
> were both at 52. I exhausted all I could 
> think of to do to get it to work but 
> nothing out. 
> 
> However, the K3 transmitted perfectly in 
> CW and the auto-tuner worked as expected.
> 
> I discovered later that the K3 will not 
> transmit in SSB. In AM it sends out the 
> carrier appropriately proportional to the 
> power setting but nothing of audio was 
> transmitted.
> 
> There is nothing plugged into the back of 
> the K3 in the audio/line KXV3B I/O module.
> 
> I loaded the config from two years ago 
> when I brought it home and after changing 
> the config to see the new components there 
> were no changes in SSB transmission. 
> 
> I did a full EE factory reset, re-set the 
> configuration to reflect the new K3s 
> boards and still no SSB out.
> 
> Since WSJT uses SSB to transmit, I assume 
> this is the cause of no transmit with that 
> software (it worked fine with the K3s).
> 
> One assumption is the K3 I bought has a 
> defective component from when I bought it 
> and I didn't know that because I didn't 
> try SSB. I thought I had while setting it 
> up for my friend (now SK) but it was 
> awhile ago and I don't remember if I did 
> or not.
> 
> -----
> 
> So with all the history above, has anyone 
> had an issue like this that you found the 
> resolution to? Maybe there is some setting 
> in the K3 I need to engage? There's 
> nothing to unplug from the rear and 
> everything else works perfectly.
> 
> Ideas & suggestions? 
> 
> Thanks & 73,
> 
> Gary
> KA1J