Sounds like one of the output transistors went bad (probably open). This would give you half power and higher input (IC821 to amp) swr.

Regards,

Reid, W4UPD

mikehooles wrote:

Hi, my 70 cms amp has suddenly gone low power (50-60w) and the input swr appears high. where can I get a copy of the circuit do do some fault finding and is this a common problem as my IC821 with a 3 ele yagi does not have sufficient power to get me onto VO-52, Regards Mike G3LGR _______________________________________________ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb

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