[Elecraft] K3 Intermittent Transmit Problem

[Don Wilhelm]

David,

You can find out if it is an RF in the Shack problem or not by 
transmitting into a dummy load.  If the problem goes away, you can blame 
it on the RF.

If RF is a problem, the proper place for ferrites is on the antenna 
feedline to choke RF common mode currents on the outside of the coax 
shield.  Trap that RF before it gets to the shack.

73,,
Don W3FPR

On 2/18/2014 2:18 PM, David B. Ritchie wrote:
> While transmitting CW into an amp (KPA500, Alpha 78, Alpha 9500) and using
> Writelog to key the K3 (happens on different computers) every once in a
> while the transmission get garbled.  Hit escape and retransmit and its fine.
> More power seems to make it happen more often.  I assume RF is getting into
> the K3.  Has anyone experienced this problem and if so, what did you do to
> fix it?  I've tried ferrites on most everything and that does not seem to
> help.
>