[Amps] Alpha 76CA low drive answered - now for the plate choke

rick darwicki n6pe at yahoo.com
Thu Dec 29 09:33:24 PST 2011


Thanks to all...... five 470 ohm 2 watt carbon films installed. Special thanks to Bob W6VY for sending me the Alpha instructions. Without them I would not have know to change the jumpers. Turns out who ever cut out 9 of the resistors also move the jumpers.
 
I've ordered an Ameritron plate choke and some doorknob caps for the coupling. Anyone have info on the swap as far as changing anything other than the big choke. I saw one mod where the second small rfc was replaced with a resistor and it looked like doorknobs were added on the dc line bypass.

I have relays and will start the pcb soon for the QSK switchout. The 8874s are at full output so I'm happy with the amp :-)

 
Rick, N6PE
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