[AMRadio] OTL Modulator?

Mike Dorworth,K4XM k4xm at arczip.com
Wed Apr 27 18:19:59 EDT 2005

There was one presented in QST some years ago. I have a photo somewhere. It
used 25 or 30 each 1625's and a  dozen TV power transformers. It was fully
broad band to 50 ohm output on any band. No tuning of any kind and no
filtering necessary. Was pure Class A.. Of course the cost was somewhat less
than 30 to 80 thousand dollars.. Mike
----- Original Message ----- 
From: "Jim candela" <jcandela at prodigy.net>
To: "Discussion of AM Radio" <amradio at mailman.qth.net>
Sent: Monday, April 25, 2005 10:54 PM
Subject: [AMRadio] OTL Modulator?

> Gents,
>     The tube audio folks are going all out these days. For the cost of a
> Chevy Corvette ($82,000 / pair) you too can have a state of the art tube
> audio system!
> The concept, and some information:
> http://www.atma-sphere.com/papers/index.html

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