On Mon, 2008-12-22 at 13:13 -0600, jim smith wrote:
> Howdy,
>
> The RF Gain/Power switch on my Corsair shot craps during the ARRL 10m
> contest. It went in a big way, taking the fuse on the power supply and
> tripping a breaker in the process.
>
> >From my read of the owner's manual, it appears to be a 10k pot. I just
> happened to have a 10k pot push/pull on/off in the junque box. I
> dutifully replaced it, but the RF gain control ain't what it used to be.
>
> Rather than really "kicking in" at about 10 O'clock [position 4 on the
> dial], it doesn't really do its thing until about 2 0'clock on the dial
> [this is on 40 m].
>
> Is that pot really a 10k? Is it a 10k linear or log? Have I maybe
> blown something along with the pot?
Its probably originally a reverse log, or your replacement is log the
original was linear. Try tying a 10K resistor from the hot side of the
pot to the wiper, that should invert the taper in a way you are
accustomed to it being.
>
> Thanks.
>
> 73, N0OCT
>
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