[Elecraft] Strange Amplifier behavior

[Tom Doligalski]

I have a relatively old K3, which I use together with a KPA500 and a KAT500. Most of the time this works flawlessly. 

However, occasionally the K3 gets confused and doesn’t realize that the KPA500 is in “Operate” mode (rather an in standby). This results in the K3 sending 100 watts to the amp, and the amp faults. 

Again, this doesn’t happen often, and I can’t ascertain why it occurs. Most of the time all is OK. 

The K3, KPA500 and the KAT500 all are running the latest firmware. 

Any idea?

73

Tom W4KX