[Amps] 4-1000A neutralization

[Bill, W6WRT]

ORIGINAL MESSAGE:

On Fri, 4 Sep 2009 09:52:38 -0500, "Robert Perdue" <kc0hfl at cox.net> wrote:

> no tuned input
>may have to add later.

REPLY:

I would add that now. That will greatly reduce the input impedance at VHF and
may be all you need to stop the oscillation. A simple LC parallel resonant tank
with a Q of three or more should do it. If you want to get a bit fancier, a
pi-network would allow exact impedance matching, but with just the simple LC
your input impedance won't be far from 50 ohms anyway. 

73, Bill W6WRT