[AMRadio] Subj change - HB designs


Geoff/W5OMR ars.w5omr at gmail.com
Tue Jul 24 20:18:31 EDT 2007


Jim Wilhite wrote:
> You are right Tony.  Why do 3 or 4 of them requiring a lot of filament 
> current when one could use one 4-250 or 4-400 or even two 4-125s.
>
> One 4-65 will only give 100 watts out in ideal circumstances if run 
> full bore.  Might as well have a DX 100.

That's kind of the plan, Jim.  I want to build a table-top transmitter, 
using a single 4-65, modulated by a pair, in AB1.

I have a modulation transformer with a screen winding on it.  I could 
use a common supply, running around 2kV from a BC-610 plate transformer 
and a pair of 866's.

--
73
W5OMR



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