[Elecraft] KAT3A 160M issue

[Victor Rosenthal 4X6GP]

If I had a problem with a KAT3, the first thing I would check would be 
the relays.
But where is the LP100 connected? It must be AFTER the KAT3, so a 
problem in the KAT3 would not change the SWR indicated on the LP100 (or 
the P3 for that matter).
Maybe you had a cable, connector, or antenna problem that damaged the 
KAT3 somehow?

73,
Victor, 4X6GP
Rehovot, Israel
Formerly K2VCO
CWops no. 5
http://www.qsl.net/k2vco/
On 11/04/2019 15:44, Gary Smith wrote:
> I have been having unusual transmit issues
> with 160M, SWR issues I have long thought
> was antenna related.
> 
> Last night I found when transmitting on
> 160 the SWR on the LP-100 suddenly showed
> 9.1 and the same with the remote sensor
> for the P3 but no output shown on the P3
> wattmeter. I connected a dummy to the amp,
> same issue. attached it to the back of the
> K3s & the same issue with the autotuner
> unable to get a good match (HIGH SWR).
> 
> This was only on 160, all other bands were
> fine.
> 
> I pulled a KAT3 from my backup K3 and all
> now works well, 160M had what showed as a
> beautiful SWR & the amp was very happy
> showing a 1.2 SWR
> 
> Before I call Elecraft & take up their
> tech time on a phone call, is there
> anything I might check on this KAT3A
> regarding a 160 failure before starting a
> RMA? The 160 toroid looks fine and no
> obvious issues show to inspection.
> 
> thanks & 73,
> 
> Gary
> KA1J
> 
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