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

[Leslie Smith]

  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 *
* (Since 30 Nov 53) *
* [2]k2gkk at hotmail.com *
* Oklahoma City, OK *
* USAF & FAA (Ret.) *
* * * * * * * * * * *


> 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
>
> --
> http://www.fastmail.fm - Access all of your messages and folders
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References

1. mailto:vk2bcu at operamail.com
2. mailto:k2gkk at hotmail.com

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