[R-390] Post to list: Metal cased caps.

[Roy Morgan]

At 07:10 PM 5/2/2005, you wrote:
>...  I see that these types of  condensors in this set are metal
>covered, and look to be of very high quality (military
>spec., I am sure, is reason for that).

Jack,

Do not replace them (unless one of them is actually bad).  Those are metal 
cased, glass insulated, foil with paper and oil dielectric caps and 
normally last forever.  (No doubt some folks on the list will tell about 
how they found leaky ones.)

If you do replace them, send them to me. I'll put them back into my R-390's 
where I take out the real troublemakers!

>  Are these metal covered, numerous ones are .01, .1, .22, 1. mf,
>really paper caps, as I suspect?

Yes, they are paper-foil-oil caps.  One brand you may have heard of is 
"Vitamin Q" from Sprague.  Sometimes they have a clear plastic tube over 
them, or a yellow covering. The giveaway is the metal case, sealed with 
solder, and the glass insulating end piece.

>   I have replaced a
>gazillion paper caps in civilian radios,

That's good. they needed it.

>Anyone know much about the quality of these metal
>covered condensors,

The quality is superb.

>how smart it is to replace them,

Not smart at all.  Don't do it.

Roy

- Roy Morgan, K1LKY since 1959 - Keep 'em Glowing!
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