[R-390] AB Ohmite resistors
rbethman
rbethman at comcast.net
Fri Feb 18 16:02:51 EST 2011
Ben,
The first suggestion would be to take a "random" sampling to see how the
values have held up.
I had a bunch like that, even in their original metal box and drawer.
I found that time was NOT their friend!
I've since procured a fair collection of the "newer" metal film type. I
do random checks, and have yet to find one out of spec.
Since rolling around an R-390A or SP-600 isn't the easiest thing for a
60 plus year old, I've taken to the use of the more modern components!
Bob - N0DGN
On 2/18/2011 3:43 PM, Ben Loper wrote:
> While working on my 75A-2 I cam across a source of NOS Allen Bradley and
> Ohmite carbon composition resistors. 1/4 1/2 1 and 2 watts sizes. I was
> putting my list together for what I might need and I wondered if anyone
> needed some. The ones I saw are all unused in packages. Ii haven't had a
> chance to go through all of them, but if there are some frequently used or
> sizes someone needs send me your list. These are the older style and again
> completely unused.
>
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