I was operating the CQWW SSB contest yesterday on 10M.? My SWR is fine on that band, as shown my by almost 100 Q's before having a problem.? Then it just went into bypass mode and when I reset it to operate, it put out perhaps 200 watts. ?This has happened before and Palstar replaced one of the LDMOS.
My antenna is a fan dipole up in the trees and the wind was blowing, so conceivably the swr could vary over time, but the amp has high swr protection that would cut off xmit if the SWR went above 2:1, I would think.???
Anyone else have an LDMOS failure and what did you determine caused this problem?? How did you prevent it from happening again??
I'm new to solid state amps, so wonder if this is to be expected compared to old tube amps.
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Thanks,
Frank
W4TG
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