Colin Lamb wrote:
> Attached is data recently taken and a hypothesis which I developed
> as a result of the tests.? The hypothesis is presented for the
> purpose of testing it, throwing darts at it and proving or
> disproving it.?
> ?
> Two circuits are included in a .jpg format.? Also included is data
> in a generic spreadsheet format.?
> ?
> Text of my hypothesis is attached in both a text and Word format.?
>
Thanks for the thorough information, Colin. Still processing here...
The QY3-125 that G2DAF used is the same as a 4-125. The operating
conditions in "G2DAF mode" are given in the scanned pages on my web
site.
>?
> Reviewing the limited facts I have, I have arrived at a conclusion
> of why Norm, W6EDD's amplfier did have "doo-doo".
> ?
Well, if that was the circuit of the amp that Rich heard, it is NOT a
G2DAF! It uses Norm's own ideas about generating screen voltage, and
thus is not relevant to this discussion.
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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