[SADXA] Yaesu G800DXA rotor problems

[Jim Wysocki]

Dennis, this sounds like a controller issue. It's possible that its 
circuitry received a static discharge through the controller lines that 
damaged the electronics.  I don't know how the Yaesu documentation reads 
but if it's similar to the HyGain instructions, there will be a table 
that shows how much the resistance should be across certain pairs of 
terminals on the control box.  If some measurement is seriously amiss, 
then there's a problem within the box.

If you have a spare control box, or know somebody who can lend one to 
you, a good test would be to swap them out and see how the motor behaves 
with the substitute in place.  If the problem remains, then you've 
probably ruled out one possible cause.  In that case I'd next check the 
connectors and control lines for water damage and open or shorted wires.

GL, Jim  W9FI

On 8/4/2021 7:54 AM, D Dismachek via SADXA wrote:
>   Well, I ran the rotor back and forth to 180 degrees and still have problems. I've played with the adjustments to try and see if I could do the initial setup again while watching the antenna rotate from the ground and it still is fast rotating at times then slows down and when I release the control the dial will swing back nearly 60 degrees. I've ordered the cable for control from my FT 1200dx radio to see if that makes a difference.
>
> ...Dennis
>       On Monday, August 2, 2021, 09:23:47 AM MST, Richard Solomon <dickw1ksz at gmail.com> wrote:
>   
>   My YAESU 2800 exhibits similar symptoms.
>
> I run the Rotor back and forth (+/-90 deg) a few times
> and the problem goes away. Let it sit for a while and
> the issue may re-appear.
>
> Not the best of Rotors, great specs but lousy lifetime.
> 73, Dick, W1KSZ
>
> On Mon, Aug 2, 2021 at 8:38 AM D Dismachek via SADXA <sadxa at mailman.qth.net> wrote:
>
> Hi All,
>
> I'm having problems with my Yaesu G800DXA rotor. When I rotate the antenna it is very slow, when I release the control it swings back 20 degrees. The alignment also ends up being off. I have read that it may be a pot on the rotor that is now bad after three years use. Does anyone have experience with this problem?
>
> Regards,
> ...Dennis / N6ITY
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