Very quick response !!
Peter Chadwick wrote:
> If you have grid current, the tube is into AB2, and with grid
> current and a bias supply that changes voltage because it is high impedance,
> you will get very poor IMD.
You are right if no ALC is used. My idea assumes 1-10 mA grid current
(yes, it is little bit AB2), but ALC reduces driving power from the excitor,
resulting total IMD is not so bad. Remember 6146 AB1 GC in KWM-2, same thing.
'73 de JA2DHC/1 Kazuo Ohashi
QTH: Fujisawa, Kanagawa, Japan
PBBS: JA2DHC@JL1ZND.11.JNET1.JPN.AS
WebPage: http://www.ny.airnet.ne.jp/ohashi/
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