Filing resistors raise the resistance, you can't lower it that way.
73
Bill wa4lav
At 12:52 PM 11/11/2007 -0500, Bruce Lanning wrote:
>Hi, I note with interest what Larry had to say about filling load resisters.
>
>"Bring an Ohmmeter or get a guarantee from a mail order seller as the value
>can change considerably over time. I have a few that were still sealed when
>purchased 100W ones that measured 68-70 Ohms. A little bit of file work and
>sealant returned them to 50 Ohms; they have remained at 50 Ohms for over 10
>years."
>
>Larry I also have filed resisters, but please tell us how you treated a
>carbarundum resister. I for one would be very interested. I have a Bird Load
>that measures 55.6 Ohms and I would like it to be 50 Ohms.
>
>Bruce
>W1GBS
>
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