Carl Heuther wrote:
>................
>The NCL screen supply is no better or worse than the competition of the
>era.
>
Rich Measures wrote:
The NCL-2000 screen supply is capable of producing high current. There
seems to be nothing to limit screen current.
>>....... As I recall, RCA recommends a rf-nfb R in an unbypassed cathode,
>>like Eimac recommends for the 4cx600, like Svetlana recommends for the
>>4cx1600. The NCL-2000 did not.
>
>
>The NCL strictly followed RCA recommendations right down the line.
? The cathode pins are grounded on the NCL-2000's diagram.
>The cathode resistor is suggested as an option in Class AB1 and at 2000V or
>less ONLY.
>
>I tried ur QST mod many years ago ( 198 something) and it brought the
>amp up into parasitic land.
? A lower vhf-Q, vhf parasitic suppressor -- i.e., one with better vhf
damping ability -- caused the amplifier to oscillate at vhf?
>...........
Rich...
R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures
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