[R-390] Re: 25-ohm pot

[Drew Papanek]

Subject: [R-390] 25-ohm pot

Charlie wrote:

>I'm looking to buy a MILSPEC 25-ohm pot of
>the same configuration and outline, etc., as R523 "CARR METER ADJ" in the 
>R-390A. It
>will replace the pot in my set, as that value
>gives more stability of adjustment.

One can achieve the same result by paralleling the
existing pot with a lower fixed resistor.  I jumped
mine with 8 ohms, IIRC.

Dave Wise some time ago came up with a slick simple
modification to the s-meter zero circuit to give
stability of adjustment. Check the archives or
Wei-i Li's "Pearls of Wisdom" at r-390a.net

Drew