[Elecraft] K3: KPA100 Squeal

[Don Wilhelm]

  Geoff,

How are you hearing any "QSK relay clicking" in the K3?  There are no 
relays changed between receive and transmit, it is all silent electronic 
switching.  If you are hearing something that sounds like a relay click, 
then that needs to be investigated - it should not be.

Sorry, but I cannot venture any guess about the source of the 12 kHz.
Have you tried turning the monitor down to zero?  Where does the source 
seem to be located?
Do you still hear it if you go to the CONFIG menu and set the KPA3 to 
"not installed"?

73,
Don W3FPR

On 6/30/2011 9:24 AM, Geoff Wolf AB3LS wrote:
> And, for even more information, I analyzed the audio that I recorded and the
> squeal is right around 12Khz. It peaks at -48dB (louder than the QSK relay
> clicking)
>
> http://imgur.com/V8o5t - image of the analysis
>