[Milsurplus] Re: BC 191, etc

[WA5CAB at cs.com]

Only the RA-34-H originally used a pair of FG-17 (967).  All other models use 
a pair of 866-A (VT-46-A).  As a comment, it doesn't look like it would be 
difficult to convert any of the other models, at least to the way the control 
was applied in the -H.  Except for the fact that a winding on the main 
transformer with a bridge rectifier developed the control voltage.  Easiest solution, 
lacking an -H transformer, would probably be to install another transformer to 
supply the 12 VDC/2.4 A mic and control voltage and use that winding.

In a message dated 9/29/2007 11:54:40 AM Central Daylight Time, 
arc5 at ix.netcom.com writes: 
> >Yo Dave &Dennis aka D&D
> >
> >I think subject '375 has a shaky HB* supply &owner coming to same
> >opinion... too many served well w/o chirp complaints.  D'ya run urs on 
> >dyno?
> 
> Yeppers.
> I love the sound of dynos in the morning.
> Sounds like...... Victory.
> 
> >
> >*Look @ regulation pains in RA34C supply for scr188.  FG17 thyratrons
> >&mag-amp deal employed.
> 
> Some doofuss modified mine for 866s.  Will put it back one of these days,
> if I ever get the bench fortified with enough steel to hold it
> or a fork-lift to lift it.
> 

Robert Downs - Houston
<http://www.wa5cab.com> (Web Store)
MVPA 9480
<wa5cab at cs.com> (Primary email)
<wa5cab at comcast.net> (Backup email)
   
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