[Elecraft] SSB TX audio problem. Need help !

[Jean-François Ménard]

Hi,

I have a K2 that work great since 2003, but this morning.... Nop.

Nothing change on my setup, I was just operate my rig this morning as 
usual and found this morning that my SSB TX audio looks horrible... 
sounds like RF feedback a few hams told me..... but...

I tried the K2 on a dummy load and listened up with my KX1, and I found 
that when I start to speak, the audio is like «scribble» or like a 
defective speaker that fuzz. It seems to be worst at the beginning of 
the transmission. I have only 1 bar or 2 on ALC reading. It sounds like 
overdriven, but ALC reading on the bar graph seems OK.

I also remove every options and installed my un-mod kit to replace 
options. I'm running the basic K2 with only the SSB adapter... nothing else.

I did again the SSB calibration procedure, nothing at all, everything is 
OK on this side.

I tried every audio gain and compressor combination, the problem still 
there, not worse, not better.

Does somebody have something to suggest me to start with ??? This is my 
first real problem from the beginning, so I don't have much experience 
in finding problem.

I have a scope, but with not much experience on how to test...

Thanks for your help !!

J-F VA2VYZ




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