[Elecraft] KAT500/KPA500 issue

[Michael Blake]

Jack, I had a similar thing happen and it turned out to be a tree branch had grown into the antenna path and when on high power the antenna was arcing to the tree branch.  Might not be a tree branch but look for any signs of possible arching in the antenna, feed line or connectors.

73 - Mike - K9JRI







> On Jan 27, 2019, at 8:10 AM, Jack Satterfield <jack at satterfield.org> wrote:
> 
> After 5 years of perfect operation, now a very strange issue
> 
> Bypass SWR 3 or 4:1
> 
> KAT500 tunes to 1.3:1
> 
> Switch amp to operate, operating SBB on first voice KAT500 goes full scale
> swr and amp faults on high swr
> 
> Never had a issue before, antenna is g5rv
> 
> Any ideas appreciated.
> 
> Jack
> 
> W4GRJ
> 
> 
> 
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