[bars] Fw: [cca] A caution regarding replacing carbon resistors: Use Allen-Bradley -- if you can find them.

[ka1uln@arrl.net]

tnx  for the  TIP  guys!
Niece

On Fri, Jan 5, 2024 at 4:03 PM Tony Brock-Fisher via bars <bars at w1hh.org>
wrote:

> I think what happens is they absorb moisture over the years, which makes
> the substrate material expand, resulting in resistance values increasing. A
> gentle baking might bring them back into spec - but for how long would be
> anyone's guess. Put 'em in your boat anchors and keep them warmed up on a
> frequent basis...
>
> -Tony, K1KP
> On 1/5/2024 3:54 PM, Steve Wedge, W1ES/4 via bars wrote:
>
> Interesting article about "olde tech".
>
> I still have parts cabinets stuffed to the top with these and I test the
> entire drawer when I need to take one for a repair.  A lot of the really,
> really old ones have drifted way beyond even their generous 10% tolerances
> of their day.  A surprising number of them are still good, though.
>
> Steve Wedge, W1ES/4
>
> Time flies like an arrow.  Fruit flies like a banana.
>
> Sent with Proton Mail <https://proton.me/> secure email.
>
> ------- Forwarded Message -------
> From: James Beitchman <jbeitchman at jgbconsult.com>
> <jbeitchman at jgbconsult.com>
> Date: On Friday, January 5th, 2024 at 1:36 PM
> Subject: [cca] A caution regarding replacing carbon resistors: Use
> Allen-Bradley -- if you can find them.
> To: cca at groups.io <cca at groups.io> <cca at groups.io>
>
>
> https://www.edn.com/carbon-composition-resistors/?utm_source=newsletter&utm_campaign=link&utm_medium=EDNFunFriday-20240105&oly_enc_id=9352C0934023D3T
> <https://www.edn.com/carbon-composition-resistors/>
>
>
>
> See this interesting article about Allen-Bradley and IRC carbon resistors.
>
>
>
> 73,
>
>
>
> Buzz
>
> W3EMD
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