[Elecraft] KPA500 Question

This is a question I've been wanting to ask... I've had a KPA500 for 4 years and I've noticed that 20 meters requires more drive. Most bands require 30 watts or less, but 20 requires 35-37 for 500 watts out. In the phone portion of 20, an SWR of 1.4:1 WILL cause a fault. It's just real

Re: [Elecraft] KPA500 Issue

Looks like the Kenwood switches high during transmit and the KPA500 requires a low for transmit. KPA500 specs in my manual say +5V max, open circuit on receive, closed to ground on transmit. My old KPA500 manual doesn't show Kenwood interconnections. Only the K3, Yaesu and Icom. Yup, ya

Re: [Elecraft] KPA500 clicking

I have clicking, but it doesn't following the keying. (Maybe you meant AFTER keying.) It happens after a long transmission...for the most part. It has to do with flexing of the heatsink or other parts of the chassis when the unit heats and cools. I believe it's been covered here before.