[TowerTalk] Yaesu rotators - who would have thought??

Pete Smith N4ZR n4zr at contesting.com
Tue Apr 29 06:34:29 EDT 2014

Yesterday, during the process of linking my two Yaesu rotators to 
computer control through ERC, I suddenly found that one of them (a 
G-1000DXA) was turning much more slowly counter-clockwise than 
clockwise. After scratching my head a bit, I swapped rotor cables 
between the two controllers to make sure it wasn't a controller problem. 
Imagine my surprise when everything worked normally, not only with the 
swapped cables but also when I put them back as before.

My theory is that these rotators are sensitive to any resistance in the 
path between the direction potentiometer and the controller, and that 
the plugging/unplugging wiped off some oxidation inside one of the Molex 
plug/jack combinations on the back of the controller. I've seen 
something similar in the past with the Jones plugs at my entry panel, 
where a little CAIG conductivity juice made all the difference in 
restoring normal operation.


73, Pete N4ZR
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