[Elecraft] K2 Transmit audio bubbly

[Vic K2VCO]

Don Wilhelm wrote:

> Unless you have an 'RF in the shack' condition that creates mic 
> feedback, I can't think of anything that would be caused by the addition 
> of the KAT100 - except for the additional data traffic on the ribbon 
> cable to the KPA100 needed to talk with the KAT100, and dressing that 
> cable will help if that is the cause.

There have been problems with KPA100 oscillation that was triggered by 
particular reactance/resistance combinations seen by the amplifier; and 
this may be created by adding a KAT100 (or using a particular feedline 
length). I experienced this myself.

The latest KPA100 mods are supposed to have addressed this problem, so 
it is worth verifying that you have them installed.
-- 
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco