[Elecraft] KPA100 problem

[Eric Wosten]

Noticed that my K2/100 using SSB was probably oscillating on 40 when the 
temperature
of the PA heatsink is warm. Not overheated but warm.
No warnings on the display of the K2, signal was run thru
a KAT100 and Drake 1kW dummy.


My K2 has all the latest and greatest mods, so the PA shield is also new.

I used to have this problem of fake high swr and hi cur stuff before on a 
badly tuned antenna,
but this is different.

Output during this oscillation is >100 watts

On other bands no problem AFAIK. When K2 is cold, no problem. In CW no problem.

If this sounds familiar, please let me know what you did to solve it.


vy 73 Eric PA3CEV


K2-100 #960



http://www.qsl.net/pa3cev/KPA100/