I have a KenPro KR2000. Yaesu bought out KenPro many years ago and the
KR2000 was converted to the G-2800DXA. I had a problem where suddenly the
rotator seemed to have limited rotation looking at the control unit. The
rotator actual did its full rotation. The KenPro CU has a couple of zeners
that seemed to go bad in my case. The zeners are part of the meter circuit.
I also had trouble with pot in the rotator at the same time. The pot became
flaky and it was a pain to replace. Getting the pot in and getting the gear
drive for it correct took a bit of doing. At one point I didn't get the gear
attached to the pot correctly and would get a similar indication as you
describe as the pot would rotate to the stop and then slip in drive gear.
The pot is a 500 ohm deal with an extra wire on it that I was able to get
from Yaesu in California. I suspected perhaps some sort of lightning related
event triggered the initial problem but found no evidence to support any
conclusion.
73, Larry W6NWS
----- Original Message -----
From: "Paul Price" <k5hsv@yahoo.com>
To: <john@kk9a.com>
Cc: <TOWERTALK@contesting.com>
Sent: Thursday, June 11, 2009 7:15 PM
Subject: Re: [TowerTalk] Yaesu G-2800DXA Not Rotating
>
> John, thanks for asking. I had the XYL rotate the beam while I watched. It
> rotated completely fine. A full 1.5 turns effortlessly. The problem has
> been narrowed down to the control box in the shack, not registering
> correctly as to what's going on outside.
>
> Ok, my next day off I'll open it up and see what I can figure out.
> Hopefully something simple. I doubt it's the cable since it rotates just
> fine but the readout is wrong and appears slow in the shack but is fine
> outside.
>
> 73s/TNX
> Paul Price - K5HSV
>
> Sent from my iPhone
>
> On Jun 11, 2009, at 4:19 PM, <john@kk9a.com> wrote:
>
> The Yaesu G2800DXA is a nice rotator. Are you sure that nothing is
> binding
> and that your coax is free?
>
> John KK9A
>
>
> To: towertalk@contesting.com
> Subject: [TowerTalk] Yaesu G-2800DXA Not Rotating
> From: "Paul Price Jr."
> Date: Thu, 11 Jun 2009 11:22:22 -0700 (PDT)
>
>
> I just turned on my control box last night and tried to work some stations
> when
> I noticed when I tried to rotate my beam the control box was very slow, in
> addition, it would only turn in the range of 60-180 degrees. This morning,
> I
> went outside and disconnected the ICE spike protector and went back inside
> to
> find out nothing had changed. I climbed the tower to see if anything
> looked
> kinked or twisted but didn't find anything out of sorts. Does anyone have
> any
> experience with a similar problem and any ideas as what I need to do
> before
> I
> pack this thing up and send it back to Yaesu in California? Using my Fluke
> meter it would be nice to be able to determine that it's just a bad cable.
> However, the fact that the rotor turns slowly and only partially makes me
> think
> its in the rotor its self... Ideas?
>
> PS: I love the rotor but I'll be darned if I ever buy something that can't
> be
> worked on by Norms or Rotor Dr. This thing may have to go back to Japan
> since
> Yaesu doesn't keep parts on hand, from what I've read!
>
> Best of 73s,
> Paul - <k5hsv@arrl.net>
>
>
>
>
>
> _______________________________________________
>
>
>
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