[AMRadio] Re: looking for linear amplifier

[Donald Chester]

>From: "David Knepper" <cra at floodcity.net>

>Jim, for your information, I have a Western Electric 451A-1 transmitter 
>(250
>watt class) that uses Doherty circuitry.  It has 6 tubes in the final that
>are similar to 211 type tubes.
>

Dave, are you sure it uses the Doherty circuit?  I recall working a couple 
of guys on 160 each using one of those rigs, and they told me it was 
straight control grid modulation.  If you run short of 211's, the rig will 
run at reduced power by leaving some of the sockets empty.  The problem with 
that transmitter is that the audiophools have scarfed up all the surplus 
211's and tubes for the final are now expensive and hard to find.

Don k4kyv

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