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[TowerTalk] G-800DXA rotator problem

To: towertalk@contesting.com
Subject: [TowerTalk] G-800DXA rotator problem
From: Scott Townley <scott@nx7u.net>
Date: Wed, 31 Aug 2022 17:09:25 -0400
List-post: <mailto:towertalk@contesting.com>
I have a G-800DXA rotator turning a K4KIO hexbeam and a 40' mast (the rotator turns the mast and the antenna).

When I turn the antenna via computer control, it does not go all the way to the desired azimuth, and when it does stop the position indicators all turn a bit counterclockwise (say 20-45 degrees worth).

I have measured the voltages coming out of the controller and found that the fixed potentiometer (pin 1) voltage jumps up from about 5.45V to 6.0V when the rotator is engaged...so the feedback voltage is always too high until it stops then the feedback voltage drops.

So I can explain why I see what I see, but any ideas why the fixed voltage is jumping up and/or how to fix that?

Thanks,

--
Scott NX7U

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