[Hammarlund] Still more bad micas

Wed, 11 Jun 2003 00:10:01 -0000

Hi pat.
I know what you're talking about concerning those "fake" micas.  I think
they might have been called "MicaMolds", or something like that anyway.
They're actually a paper capacitor in a square plastic molding. =20

No, these that I've been replacing are actual micas.  The Micas were =
usually
used in RF circuits while the "phony" ones were used for audio coupling =
and
other places where a paper cap might be used. =20

IN FACT, this SP-600 had a few of those critters in the audio section =
and
other non critical sections of the receiver.  They were replace with =
Orange
Drops during the re-cap process.  The only ones not replaced in this set =
are
used as the line to chassis bypass capacitors and they should be =
replaced
I've seen those capacitors literally blown to smithereens in some sets.  =
(In
fact that very problem is a VERY good reason why, for safety you should =
put
a grounded 3 wire power cord on your BA's).    =20

73 de Phil, KO6BB
DX begins at the noise floor!
[email protected]
Merced, California
37.18N  120.29W  CM97sh

-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Patrick A. =
Thompson
Sr.
Sent: Tuesday, June 10, 2003 10:21 PM
To: Phil Atchley; [email protected]
Subject: RE: [Hammarlund] Still more bad micas

Years ago I had a BC-348 that had postage stamp caps with color code =
dots
that looked like mica but were actually paper!

Have you opened one of these caps up to be sure its mica?

Just an improbable thought.

Pat
wa4tuk

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