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Re: [TowerTalk] Yaesu G2800DXA Rotor Problem

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Subject: Re: [TowerTalk] Yaesu G2800DXA Rotor Problem
From: "David Robbins K1TTT" <>
Date: Fri, 30 Mar 2007 21:51:12 -0000
List-post: <>
You can easily test the pot.  Just put an ohm meter on the cable coming down
and see if it goes through the full range smoothly as it turns.  If it
smoothly tracks through the 160 degrees as the rotor turns all the way
around then the pot is probably ok, normally the damager there is a burned
spot so the indicator tracks part way then jumps.  More likely it took out
one of the op amps or part of the power supply in the control box.

David Robbins K1TTT
AR-Cluster node: 145.69MHz or telnet://

> -----Original Message-----
> From: [mailto:towertalk-
>] On Behalf Of Joe Giacobello
> Sent: Friday, March 30, 2007 18:35
> To:
> Subject: [TowerTalk] Yaesu G2800DXA Rotor Problem
> I just installed this rotor last week and it was working
> satisfactorily.  Unfortunately, we had a heavy duty lightning storm
> earlier this week and now, while the rotor is turning normally through
> 450 degrees, the dial indication only goes through 160 degrees (155-315
> degrees).  I tried to recalibrate it but I'm at the extreme position of
> the full scale adjust control and still only have 160 degrees of span.
> I am already anticipating someone telling me that the variable pot
> inside the rotor housing is the problem.  Have you ever seen a grown man
> cry? :'(
> 73, Joe
> K2XX
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