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Re: [TowerTalk] Yaesu Rotator Problem

To: <>
Subject: Re: [TowerTalk] Yaesu Rotator Problem
From: "JCMonty" <>
Date: Wed, 29 Mar 2006 12:00:13 -0600
List-post: <>
I put (look, don't laugh) a G-2800DXA up a couple of years ago and wasn't
paying attention.  I installed it upside down (OK I know the cable wrapped
around the mast as it rotated, I know better now).  Anyway it worked fine
until it had rained a few times, after which the misbehavior similar to that
described below occurred.  I disassembled, cleaned, dried, re-lubricated,
reassembled and reinstalled it, correctly this time.  It works fine now.

73 de AG4KM

-----Original Message-----
From: Chuck Lewis [] 
Sent: Wednesday, 29 March, 2006 10:19
To: Doug Rehman;
Subject: Re: [TowerTalk] Yaesu Rotator Problem


Check the internal potentiometer resistance reading at the ground as the 
rotor turns through its full rotation. There should be a smooth change from 
zero ohms to around 500 ohms measured the between the pot slider and ground 
(pins 2 and 3, respectively on my G800SDX) as the rotor turns. Your pinout 
might be different.

I found a somewhat similar problem due to a build-up of insect debris and 
moisture inside the backshell of the connector at the rotor. The debris had 
caused a leakage path between one of the motor drive lines (4&5, in my case)



Chuck, N4NM

----- Original Message ----- 
From: "Doug Rehman" <>
To: <>
Sent: Tuesday, March 28, 2006 7:38 PM
Subject: [TowerTalk] Yaesu Rotator Problem


> I have a Yaesu G1000 rotator with a G800-S controller. When I put the
> combination up last year, it worked perfectly; it recently developed a
> problem. The pair is set up with south center and the overlap from south 
> to
> west. From south to south, the needle moves at a varying speed and does 
> not
> accurately report the rotator's position; it is accurate at when the 
> rotator

> Any ideas?
> Tnx,
> Doug


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