Thanks Ian for the G2DAF articles. And expect more soon I hope.
Hej daa de Hans
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>Från: "Ian White, G3SEK" <G3SEK@ifwtech.demon.co.uk>
>Till: amps@contesting.com
>Ämne: [AMPS] New G2DAF amplifier information
>Datum: tis 14 mar 2000 07.06
>
>
>
>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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