On 4/21/2011 9:20 AM, Tom Osborne wrote:
> Why would you need a peak reading meter for tune up?
I routinely do initial tuning of the antenna at low power, then turn on
the amp and carefully tune the amp for maximum output with a series of
dits. This puts less stress on the and and power supply than keydown,
and while it works with an averaging meter, a peak reading meter makes
this easier. A peak reading meter also makes it easier to tweak the amp
on the fly as you QSY for S&P during a contest.
Tuning for max output is especially important with triode output stages,
because it minimizes distortion (that is, harmonics and splatter). When
you hear a broad signal, it's a sign that the lid running it either
doesn't know how to tune his amp or set his audio levels, or both.
73, Jim Brown K9YC
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