All the Yaesu rotors use +/- DC (approx 9-20VDC) to Pins 4 and 5 of the
Take a voltmeter and measure Pins 4-5 on your controller...as you increase
the speed potentiometer, the voltage should go up.
Conversely, you can take a variable power supply out the tower and gator
clip +/- DC to the rotor control cable (be sure to first disconnect the
controller at the shack).
You should be able to observe the rotator changing direction & speed, and
can determine if the problem lies in the rotator or the controller.
----- Original Message -----
Sent: Sunday, June 19, 2011 11:14 PM
Subject: [TowerTalk] G-800DXA
> I have a Yaesu G-800DXA that I have owned and used for several years now.
> First turning a T-5 log, 5el 6m, and 2m 15el yagis. Now turning a Hy-Gain
> TH-6. Working fine until here lately. I think it's a controller issue.
> There is NO Speed control any longer. It starts and stops just fine and
> goes to presets well. Makes no unusual noises. ??? I have cleaned the
> speed adjuster pot but it had no affect.
> Does anyone have any ideas about what's gone wrong. I'm new to the list
> and appreciate any help.
> Thanks in advance
> Joe K0TRT
> TowerTalk mailing list
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