[Collins] More on KWM-1 neutralization

[Dr. Gerald N. Johnson]

Yes, but even with an open screen there is some plate current and some 
forward gain and that
prevents perfect neutralization so I believe neutralization with the
plate and screen disconnected gets a more stable stage.

73, Jerry, K0CQ, Technical Adviser to the Collins Radio Association

On 5/31/2011 5:58 PM, Bob and Sue Jefferis wrote:
> Interesting thread. Just catching up with mail after a holiday. As an
> addendum, I will pass this along: Some years ago I was given the
> opportunity to read and take some notes from a 1968 vintage Collins
> Production Test Procedure for the 32S-3. With respect to driver
> neutralization, they simply disabled the screen and of course, left
> the filament operating so the tube would have operational
> inter-electrode capacitances. Probably a good compromise between
> perfection and production efficiency.
>
> 73, Bob, KF6BC On May 23, 2011, at 3:11 PM, Dr. Gerald N. Johnson
> wrote:
>
>