[Elecraft] Using A 6 Meter LNA & Amplifier with the K3S

[ANDY DURBIN]

"The ONLY good use of ALC between rig and amp is to protect the amp from a failure in the antenna system. "


The KPA500 doesn't work that way so I'd be surprised if the KPA1500 did. For the KPA500 a badly mismatched load will trip the reflected power fault without making any change to the ALC voltage. I know this because ALC voltage is included in my logger data set and I have several logger records for Fault 09. (It's not that I'm really careless about antenna switching. FL09 was a deliberate test case for evaluating a KPA500 firmware defect.)


73,

Andy k3wyc