I've been using twelve 0.02 uF micas in six monoband 3-1000Z amplifiers
for over 25 years. After more than 500,000 DX QSO's they operate like
they are eager for the next 500,000.
73
Frank
W3LPL
donovanf@erols.com
Peter Chadwick (Peter_Chadwick@mitel.com)
Fri, 12 Feb 1999 08:49:42 -0000
I've never come across the idea of problems with DC on micas before.
Most
micas are DC rated, anyway. Never had any micas fail on me, either.
In fact, in over 30 years in the business professionally as well as
amateur,
the only caps I've had fail were electrolytics and paper tubular,
besides a
couple of acses of over run ceramic RF caps.
This may have come from the problems with Yaesu FT101s and FL100s, where
the
coupling cap from driver plate to PA grid was a 350 volt (if I remember
right) unit, and was pushed a bit on the ratings. Even a 500volt unit
there
was tight. They'd go leaky, and fry the PA tubes - as you'd expect.
73
Peter G3RZP
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