[Milsurplus] Advice from the group requested...I'm in a quandry

Wed, 23 Apr 2003 15:15:53 -0400

Ken:

I don't believe in wholesale replacement of working components.  There are
two exceptions to my rule: 1) if a component failure will cause "collateral"
damage (like the dc blocking caps in the R-390A that will take out a
mechanical filter), then I'll replace it as a precaution; 2) if I'm working
on a particularly difficult part of a radio to reach (like if I have to do
major disassembly to reach another part I have to replace) and there are a
couple of caps I can replace just to avoid ever having to go into that part
of a radio again, then I might replace a few otherwise good components.
Otherwise, don't make extra work for yourself.  It's not like you're
restoring an aircraft, where if a part fails in service it could cost you
your life.  Deal with failed components as they require it.  FWIW.

73,
Jim
WA2MER

-----Original Message-----
From: [email protected]
[mailto:[email protected]]On Behalf Of Kenneth G. Gordon
Sent: Wednesday, April 23, 2003 2:59 PM
To: [email protected]
Subject: [Milsurplus] Advice from the group requested...I'm in a quandry

I am now working in earnest on the pile of SRR-11,12, 13 receivers I have
here and have come up against a puzzling question: there a lot of what turn
out to be paper capacitors in the receivers,  which, in general, I thought
should be replaced by orange drops or disk ceramics. (I don't even want
to think about all the postage stamp micas at this point).

However, these paper capacitors are somewhat unusual (to me) in
that they are sealed inside a metal cylinder, with a ceramic bead
seal at each end, then covered with a fairly thick clear flexible
insulator. Although I have yet to check some of them for leakage, it
seems like it could turn out to be a lot of un-necessary work.

What do you think?

Ken W7EKB
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