[AMRadio] Stancor Modulation Transformer Wiring?

[manualman at juno.com]

Try this:
http://www.amwindow.org/tech/htm/modtran/stancor/stancor1.htm

Pete, wa2cwa

On Fri, 27 Jan 2012 00:14:38 -0500 Steve WA1QIX <wa1qix at piesky.com>
writes:
> Hi !
> 
> I'm modifying a Ranger transmitter, and am replacing the existing 
> modulation transformer with a Stancor A3893.  This, along with a 
> direct-coupled audio driver, running the modulator (using 6DQ5s) in 
> AB2 
> (with plenty of negative feedback) should result in an excellent 
> sounding 
> driver for my friend's linear amplifier.
> 
> I am not sure of the wiring of the A3893, and can't seem to locate a 
> wiring 
> diagram.  I've traced it out, feeding low voltage into one side and 
> 
> measuring the output on the other.  The turns ratio, full primary to 
> full 
> secondary is about 1.176:1 .  This will work very well, and the 
> modulator 
> should be able to deliver enough audio to modulate the carrier 
> around 180% 
> positive.  There will be a 3-diode negative peak limiter as part of 
> the 
> modulator.
> 
> Does any one have a diagram for these Stancor transformers, or at 
> least 
> know which is the "primary" and which is the "secondary"?  As long 
> as 
> either side can withstand unbalanced DC, it really doesn't matter 
> which is 
> which, but it would be nice to know the "proper" wiring.
> 
> Thanks and Regards,
> 
> Steve