[Elecraft] K3 s/n 1169 21MHz band distortion

[Jack Colson]

I have noticed whenever I used the transciever on 21MHz (rare since band 
conditons are so poor) a distortion of received signals.  I listened to 
the transmitted signal using on other receiver(s) and it is quite 
noticeable.  Especially when comparing the purity of the CW note on 14 
and 28 MHz.

The recieved signal distortion is difficult to describe.  The amount of 
distortion varies from signal to signal.  And it does not seem to be a 
function of received signal strength.

I switched power supplies, no change.  Switched from using an external 
antenna to a dummy load and no change in the sound of the transmitted 
signal purity.

I think the best illustration of this would be for me to call a service 
technician and let them listen to it.  That would at least let them hear 
what I am experiencing.

Thank you for your assistance.

Jack Colson, W3TMZ