[Elecraft] KAT 500 Loses Match

[Ken WA8JXM]

Your situation sounds like 1) something is heating up and changing value 
or 2) something is arcing and changing value.  Are you using a balun or 
choke that is underrated?

Ken WA8JXM


On 1/13/2024 12:28 AM, Michael Reynolds, NO6O wrote:
> Greetings,
>
> I joined this list today, after sending a message to Elecraft support, 
> describing a similar problem.  I have an Icom IC-7610, with the KPA500 
> and KAT500, and my SWR spontaneously climbs into the red sometimes 
> during transmissions.  It takes some effort to correct it, and I 
> typically lose a QSO in the process.  The relays go nuts trying to 
> re-tune, and sometimes produces a fault condition. Usually, I can 
> correct it by restarting both the amplifier and tuner.  I have a Comet 
> CHA-250HD, which has a almost a flat 1.1 SWR from 80m to 6m.  I don't 
> need a tuner while barefoot.  However, when I first hooked up the 
> KPA500, the SWR was not flat, and added the KAT500 this week, which 
> led to my SWR issue.
>
> I hope the cause and resolution can be determined.
>
> Michael
> NO6O m