[Amps] Tentec Hercukes II PA Bias

Gary Hendricks k4mt1950 at charter.net
Mon Jun 10 12:00:21 EDT 2019


Does anyone know the proper spec for the Hercules II PA bias.  It has 
MRF458 devices.

I read somewhere it needs to be 500 ma per pair of transistors which is 
consistent with radio PAs that use these.

Amp I just acquired has PA bias set at 1.5 amps per  pair.  This amp 
looks unmolested as screws show no screwdriver marks. Is that bias of 
1.5A factory set?


Thanks

Gary K4MT



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