[R-390] R-390 RF Gain Control

[Les Locklear]

Just contact Mark Oppat at Old Radio Parts.  https://www.oldradioparts.net/

He can make you whatever kind of pot you need. I needed a dual pot with on-off switch and he came through.



----- Original Message -----
From: Larry H <larry41gm at gmail.com>
To: R-390 Forum <r-390 at mailman.qth.net>
Sent: 9/14/2021 1:23:34 AM
Subject: Re: [R-390] R-390 RF Gain Control
________________________________________________________________________________


I can see that adding a fixed res on one side of a linear pot would some
what simulate a log pattern in some circuits.  However, I don't think it
can be done in this one.

Kevin,  If a pot from Fair Radio isn't good, they will probably exchange it
for you.  Or you may need to resort to repairing the resistor land track in
one.  It can be done.  Take a look at this article: Repairing old
potentiometers (radiomuseum.org)
<https://www.radiomuseum.org/forum/repairing_old_potentiometers.html>

Regards, Larry
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