[ARC5] Disk ceramics for ARC-5 receivers

[Kenneth G. Gordon]

On 28 Mar 2011 at 9:46, jsloss wrote:

> Ken:  Would you mind sharing the mechanics you used to stuff a new .01
> or .05 in the old cans of a bc-453.  My 453 would appreciate your
> thoughts.

Although I have not yet started on that job, what I intend to do is to try two 
different methods, both of which have been described on the ARC-5 list:

1) Cut around the top of the can, just under the lip, with a tubing cutter, 
restuff, and then either solder the top back on, or glue with epoxy or JB-
Weld. I suspect that the JB Weld will be the easiest, strongest, and least 
noticeable method.

2) Cut the mica insulator very carefully around the inside-top-edge of the lip, 
restuff, then glue the mica insulator back in with epoxy or something similar. 
If this is done properly, it should be almost unnoticeable.

I have a fairly large stack of bad can-caps, and will be adding to that stack 
very shortly.

I use a Heathkit C-3 to check them with, after I have either disconnected or 
removed them. It has always been correct, so far.

As soon as I rebuild the SEMCOR RC-115 clone of the Sprague TO-5, I'll 
use that.

I still have to find some smaller 0.22 MFD 400 or 500 VDC caps. Haven't 
done that yet.

Ken W7EKB