[Elecraft] Weird K3 SSB problems fixed

[Brian Alsop]

Thanks to tips from several people of the list this problem was solved.

It turns out that a scope showed there was a 300 mv audio signal on line 
in.

Line in was not selected and I don't understand how it got to the mic 
input. Bleed through?  I normally use line in for PSK in the data A mode.

Never the less, I had shot myself if the foot.  The SDR RX/Rocky 
connected to the K3 normally has its audio sent to a sound card with no 
speaker/earphones connected.  Today I listened to it a bit on a 
different sound card.  Resetting the sound card choice, I'd sent it to 
the SC used for PSK transmit tones.

73 de Brian/K3KO

On 12/25/2013 17:28, Brian Alsop wrote:
> I was using the K3 today.  The VOX kept cycling to transmit and back
> with no voice input.
>
> Sounded like an easy problem to fix.  Just touch up the antivox.
>
> Nope.
>
> Listening in the monitor, there is a rushing sound with clicking (like
> fans in the background or something with a superimposed woodpecker).
> Clearly that spurious noise is what was tripping the vox off/on.
>
> Next removing the mike plug, the rushing sound was still there.
>
> With no mike input where is it coming from?  Unlikely to be RFI since it
> is there at 1 watt.
>
> Setting the mike gain to zero and compression doesn't fix it.
> Compression level does substantial increase or decrease it.
>
> Any suggestions?
>
> 73 de Brian/K3KO
>
>
>
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No virus found in this message.
Checked by AVG - www.avg.com
Version: 2012.0.2247 / Virus Database: 3658/6449 - Release Date: 12/25/13