[AMRadio] Re: age pole - JKO

Geoff/W5OMR ars.w5omr at gmail.com
Thu Jul 26 16:24:12 EDT 2007

Jim Candela wrote:
> BTW, that was back in 1975 time frame. Those same 8417's are still in use at ARS W5OMR..
In use in the Speech Amp as push-pull parallel 8417's in a Bogen CB-120.

The audio comes straight off the plates and into a 6k Ohm isolation 
transformer whose secondary acts as a high-Z choke, and the audio goes 
on to the bases of a pair of ECG164's lashed up in an emitter follower, 
with the emitter output lines directly driving the grids of the 250TH 

73 = Best Regards,

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