If you see low power it's a clue.  I operate my K3S + KPA500 as a 500W transceiver, except when I'm running IMD tests, so the last time it happened I was notified of bad audio.

The previous times the wattmeter or IMD tests were the clues.

Wes  N7WS

On 12/13/2018 12:03 PM, j...@kk9a.com wrote:
It would be nice to know what conditions caused this FET failure. Is there
an easy way to know when this failure occurs other than getting crappy
audio reports?

John KK9A


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