[Elecraft] High SWR problem

[Don Wilhelm]

Rob,

You may have something in your antenna system that is arcing at high 
power, but is working just fine at low power.

73,
Don W3FPR

Rob May wrote:
> All has been fine with my K3 until today.  The display is indicating  
> "High SWR" when I transmit on SSB.  The KAT3 indicates a 1.0:1 match, 
> but the when I transmit the swr meter is high and I get the high swr 
> message on the screen.  If I turn it down to 5 watts and send a tone 
> with Digipan, the swr is fine, but turn it up to 100 watts and the swr 
> is back up.  Nothing obvious has changed, the antenna is 2:1 on my 
> analyzer with no tuner.  If I bypass the antenna tuner, the bar graph 
> meter on the K3 shows about 2:1.  But if I switch in the KAT3 and 
> tune, it indicates 1.0:1 but when I transmit it's high.  I've swapped 
> coax jumpers between the radio and the antenna with no difference.  
> Thanks for any suggestions.
> Rob
> NV5E
>