[AMPS] SB-220 conundrum

[Pete Smith]

At 09:49 PM 1/18/00 -0500, Michael McCarthy, W1NR wrote:
>Pete,
>
>It is generally accepted that if max. power output does not
>co-incide with the plate current dip, you have a parasitic
>oscillation.  Why such a subtle change causes it is anyone's
>guess.

Without any other indications of instability?  'Way back when, the
conventional wisdom for grid-driven stages was that the plate dip and max
output setting of the plate cap always were a little off each other.  The
reason I can't tell ya.

Anyhow, the amp seems just as well-behaved on 40 as on the other bands.
Odd...

73, Pete Smith N4ZR
n4zr@contesting.com 

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