[Elecraft] K2-100 Parasitic

[John Huffman]

Kurt -

I've had the same problem.  I had assumed RF was getting into my setup on 40 
meters.  The KAT100 would not find a match and only one LED would light up at a 
time.  It often caused the KDPS2 to disconnect requiring a shut off and on to 
get it back.

Separating the KAT100 from the K2/100 by a couple of feet was a temporary fix.

I'll give moving RFC10 a try.  Did you move it back away from the back panel? 
Did you move it closer to T4 on the other side of the board?  Did you need to 
readjust C1 for SWR null?

73 de K1ESE
John

> Tom sent me a proposed modifcation to the KAP-100 amp. the required moving the 
> RFC10 that's mounted on the SO-239 over so it is not covering the open slot on 
> the PC board. The modifcation was easy to do and cured the problem in my 
> setup. In my case the RFC was only moved about 1/8", which seemed rather 
> insigficant at the time, but it sure made things work in my K2100 - KAP100 
> combo.