[Elecraft] Problem with K2 transmit quality

[Giulio Pico - IW3HVB]

Don Wilhelm wrote:
> Giulio,
>
> Can you please describe the distortion?  Also, please say whether the 
> distortion is heard in the sidetone or on a different monitoring 
> receiver.
>
> Does all this happen when operating into a dummy load?  Or is it only 
> when operating into an antenna?
>
> Is this with a hand key? or with paddles?  If with paddles, does it 
> happen with a string of dashes? or a string of dots? or both.
>
> If you have not cleaned your key contacts, that could be the problem.  
> Put a strip of paper between the key contacts, close the key and 
> extract the paper - that should clean the contacts.
>
> I cannot comment on the SSB until the CW is corrected.
>
> 73,
> Don W3FPR

Instead of a clean note i have a sound like prrrrr prrrrr  :-)  it is 
wide in frequency like when an amplifier is working in a non linear region.

I have it on both antenna and dummy load. Not on the side tone, but on a 
second receiver (Tried on HF and 144 MHz with XV144, same result....)

I'm using bencher paddles, on both dot and dashes. The K2 is modified 
with external PTT mod.

73 de Giulio IW3HVB