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Re: [Amps] Looking for a design for a single 4cx250b tube on50 Mhz-six m

To: craxd <craxd1@ezwv.com>,"amps@contesting.com" <amps@contesting.com>
Subject: Re: [Amps] Looking for a design for a single 4cx250b tube on50 Mhz-six meters.
From: Bill Fuqua <wlfuqu00@uky.edu>
Date: Tue, 12 Oct 2004 14:51:52 -0400
List-post: <mailto:amps@contesting.com>
The manual claims that a single 4CX250B will produce 600 watts peak output. It has unregulated bias supplies as well.
I wonder if that is figuring peak voltage squared divided by resistance rather than PEP value.


73
Bill wa4lav

At 12:12 PM 10/12/2004 -0400, craxd wrote:
Ken,

If six meters is all your wanting, no higher, I'd take a look at the way the old Pride amplifier was made. The schematic for it is all over the net. The input and output tank will need to be changed for six meters but the circuit is almost the same. Pride made two models of this (both the same), I think one was called KW-One and the other a 300 if I recall. It dont have the best regulation for the screen and G1 bias, but it did work up to 10 meters using one 4CX250B.

http://cbtricks.com/Amp/pride/index.htm

Will Matney
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