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 [mailto:clewis@knology.net]
Sent: Wednesday, 29 March, 2006 10:19
To: Doug Rehman; TOWERTALK@contesting.com
Subject: Re: [TowerTalk] Yaesu Rotator Problem
Doug,
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)
<<Snip>>
GL!
Chuck, N4NM
----- Original Message -----
From: "Doug Rehman" <rehman@surveil.com>
To: <TOWERTALK@contesting.com>
Sent: Tuesday, March 28, 2006 7:38 PM
Subject: [TowerTalk] Yaesu Rotator Problem
<<Snip>>
> 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
<<snip>>
>
> Any ideas?
>
> Tnx,
> Doug
> K4DDR
>
>
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