[Elecraft] KAT500/KPA500 - Sanity Check Please

[Andy Durbin]

"Should the key line cables from the KAT500 to the KPA500 and the rig (using a Flex) prevent keying the amp if the SWR exceeds 10:1 automatically?"

I'd suggest installing and running the KAT500 Utility.   It will give a clear indication of whether the KAT500 is inhibiting the KPA500 key line (Operate tab, others, Amp Key Interrupt) .   To the best of my recollection Bypass VSWR is never used to interrupt the keying line.  However, if you are  bypassed, and transmitting with excessive VSWR, then the key line will be interrupted because of the current VSWR.   VSWR thresholds can be set with KAT500 Utility, Configuration tab, VSWR thesholds.

Andy, k3wyc