SB401 Neutralization???

[Garey Barrell]

Dan -

The Drake method should work just fine.

It usually takes SEVERAL iterations to get the Drake neutralized, since you
have to move the cap, recheck the dip, move the cap, recheck the dip, etc.,
etc.  It takes a lot of patience to get it "right", and it's always just
"close".

The Heath method, on the other hand, (which by the way is the "traditional"
way to neutralize a stage,) requires only that you monitor the output level
with plate and screen voltages removed, and then just adjust the
neutralization cap for minimum output.  This is a dip, and can be set
precisely to the minimum while watching the output meter "real time".

Either method, with care, is more than adequate.

73, Garey - K4OAH
Atlanta

At 10:40 PM 10/22/2002, you wrote:
>More of a question after I got answers.
>I have a Drake. When I Neutralize finals on it I do not have to cut any
>connections to the screen or plate.
>On the Drake I turn the trim cap in the finals to get a null when I get the
>highest RF output.
>In other words the null or lowest dip of plate should take place at the same
>time as the highest watts out.
>Why won't this work on the Heath?
>Does anyone know of a way to do this process without having to open the radio
>up and do major surgery?
>Thanks.
>Dan
>
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