[ARC5] Circuit for plate modulator (WU2D) using pp beam tubes.

[D C _Mac_ Macdonald]

Thanks, Les.  I'll be looking for it! 
 
* * * * * * * * * * * 
* 73 - Mac, K2GKK/5 * 
* (Since 30 Nov 53) * 
* k2gkk at hotmail.com * 
* Oklahoma City, OK * 
* USAF & FAA (Ret.) * 
* * * * * * * * * * * 
 
 
> From: vk2bcu at operamail.com
> To: k2gkk at hotmail.com; arc5 at mailman.qth.net
> Date: Sat, 13 Apr 2013 08:28:46 +1000
> Subject: [ARC5] Circuit for plate modulator (WU2D) using pp beam tubes.
> 
> Hello Mac,
> I'll be pleased to send a copy of this circuit (schematic only, no
> construction notes, sorry) on Monday evening (your Sunday).
> The circuit shows the mic amp (two triodes, - 12SL7) driving a pair
> of 1625s in push-pull.
> The second triode acts as the phase splitter to derive the push-pull
> signal from a single ended mic amplifier.
> The modulation transformer is marked simply as 2:1.
> The supply to the modulator is marked at 750V DC.
> The supply to the transmitter (PA plate) is marked at 600V DC.
> 
> The first stage in building this will be to locate a suitable
> modulation transformer.
> 
> List-subscribers can get a copy of W2UD's 2012 circuit (your Sunday)
> by sending an email to me, with the subject "W2UD modulator cct"
> 
> 
> 73 de Les Smith
> [1]vk2bcu at operamail.com
> 
> 
> On Sat, Apr 13, 2013, at 6:45, D C _Mac_ Macdonald wrote:
> 
> It would also be helpful for many of us
> to obtain that circuit, Les!
> 
> * * * * * * * * * * *
> * 73 - Mac, K2GKK/5 *
> * k2gkk at hotmail.com *
> * * * * * * * * * * *
> 
> 
> > From: vk2bcu at operamail.com
> > To: arc5 at mailman.qth.net
> > Date: Sat, 13 Apr 2013 06:35:44 +1000
> > Subject: [ARC5] Have a circuit for plate modulator (WU2D) using pp
> beam tubes.
> >
> > Dear List-members,
> > I now have a circuit, (by WU2D), for a plate modulator using
> push-pull
> > 1625's (or 6L6's).
> > Am still interested in a circuit doing the same thing using high
> > voltage MOSFETs
> >
> > 73 de Les Smith
> > vk2bcu at operamail.com