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[AMPS] Bargain basement broadband tetrode amp

To: <amps@contesting.com>
Subject: [AMPS] Bargain basement broadband tetrode amp
From: wb4mnf@atl.org (Bob Duckworth)
Date: Thu, 17 Aug 2000 20:54:56 +0100
Het, I started this and we're not talking about CB amp.
We're talking about Tetrode amp with  tube side of output tranny
between screen and plate anf HV applied to screen :-)

Or is this a common CB circuit???

-bob

----------
| From: Tom Rauch <w8ji@contesting.com>
| To: amps@contesting.com
| Subject: Re: [AMPS] Bargain basement broadband tetrode amp
To: <amps@contesting.com>
| Date: Thursday, August 17, 2000 10:00 AM
| 
| 
| > 4CX250 tetrodes are cheap enough and they work very well. Amplifier 
| > circuits for this tube are available on the  http://sonic.ucdavis.edu 
| > amateur radio pages and many Radio Handbooks. 
| > 
| > cheers
| > skipp
| 
| The 4CX250 amp looks like a CB amplifier Skipp. It certainly can't 
| be a very good amp for ham radio.
| 
| It takes 1-5 watts of drive, and worse yet has no screen regulation, 
| current limiting, or metering.
| 
| I certainly hope not many are used on amateur bands!
| 
| It looks like a copy of a CB amplifier marketed under the guise of a 
| "amateur linear" by a company that sold out-of-band crystals for 
| CB radio's in the 70's and early 80's.
| 
| 
| 
|  
| 73, Tom W8JI
| w8ji@contesting.com
| 
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