>Rich said:
>
>"Norm's circuit was grid driven. "
>
>Rich, I am looking at Norm's circuit on page 157 of the New Sideband
>Handbook published by Don Stoner. On the left of the schematic, there is a
>notation that says "rf input". A connection is shown from that point to the
>grid of a 6L6 "gate" tube. The connection also goes to the filaments of two
>RK-65 amplifier tubes. I do not call that grid driven. The wire inside the
>tube that gets hot and emits electrons is not the grid. Perhaps I should
>have called Norm's circuit "filament" drive. Norm makes a special point of
>noting that the 2 ufd capacitor on the screen must be oil filled. Would
>that be olive or canola oil?
>
?
- Rich..., 805.386.3734, www.vcnet.com/measures.
end
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