[AMPS] New G2DAF amplifier information

[Mike Sawyer]

Oh NO!!! Not AGAIN?!?!?
(HI,HI)
Mike(y)
W3SLK
----- Original Message ----- 
From: Ian White, G3SEK <G3SEK@ifwtech.demon.co.uk>
To: <amps@contesting.com>
Sent: Tuesday, March 14, 2000 2:06 AM
Subject: [AMPS] New G2DAF amplifier information


> 
> 
> Thanks to the RSGB Library, the original G2DAF article is now
> downloadable as a PDF file from my web site:
> http://www.ifwtech.demon.co.uk/g3sek/g2daf.htm
> 
> The pages are reproduced without technical comment, as historical
> research material.
> 
> The 10-page article from April 1961 includes theory of operation that
> was not included in the later shortened versions. There is also an
> Appendix about use of the circuit with tubes such as the 4X150A that can
> run negative screen current.
> 
> The idea is older than we might think. G2DAF was granted British Patent
> No 926091 in 1961, so the original work must have been done in the mid
> to late 1950s. Permission was granted for radio amateurs to construct
> the amplifier for individual use.
> 
> The RSGB Museum still has G2DAF's original 'test-bed' amplifier - and
> also his notes and files! When I can, I'll take a look...
> 
> 73 from Ian G3SEK          Editor, 'The VHF/UHF DX Book'
>                           'In Practice' columnist for RadCom (RSGB)
>                            http://www.ifwtech.demon.co.uk/g3sek
> 
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