[AMPS] FAILURE OF PARASITIC RESISTORS IN AL-811X AMPLIFIER

[Brian Miller]

Hi there

We have recently purchased a second-hand Ameritron AL-811X amplifier. It
works fine on all bands except 10/12m where it is difficult to output more
than 300W without turning the anode parasitic resistors into smoke!

I have tried replacing the original carbon composition resistors with carbon
film types but the problem persists. It looks like this is a design flaw.

Has anyone else encountered this problem? If so did you find a solution? Any
advice would be appreciated.

Thanks & 73

Brian Miller
ZL1AZE


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