[R-390] Caps

[David Wise]

I researched caps only for replacing C553.  One per radio.  For the others, self-heals are non-fatal so metalized film is okay.  Hmm - C511 bypasses the B+ on C553.  A short there would hit the filter with a good-sized transient.  But it's a 1kV ceramic.  What's the word here?  Are these ceramics more or less reliable than film/foil?

Dave Wise
SWL in Hillsboro OR

-----Original Message-----
From: r-390-bounces at mailman.qth.net [mailto:r-390-bounces at mailman.qth.net] On Behalf Of David C. Hallam
Sent: Thursday, May 02, 2013 5:05 AM
To: r-390 at mailman.qth.net
Subject: Re: [R-390] Caps

Check the current price on these capacitors.  You will find the price is 
several dollars each.  Maybe if you are doing a one off for yourself or 
someone with deep pockets and really doesn't like the looks of orange 
drops, otherwise just too much.

David
KW4DH

On 5/1/2013 10:25 PM, sam letzring wrote:
> CDE still makes 3 versions of axial-lead film/foil capacitors. Series 
> WMC, WMF and WPP. I have been using a NOS supply of these for years on 
> my boatanchor refurb projects. Just don't like the way the radial OD's 
> and others look under the chassis. They are probably easily available 
> from CDE distributors. I'm sure they would work with someone to make a 
> supply available to us fanatics!
>
> 73
>
> Sam
>
> KE5IRZ