George,
You need to make sure the 1/4" SS bolt holding the mast clamp to the
rotor shaft is tight. If not, the shaft may drop slightly and cause a
lever to actuate the limit switches so the controller thinks it's at the
rotation limits. This is particularly true on older rotators.
The cable length shouldn't matter. If it turns part of the way it's working.
Another thing could be the shaft binding if not truly centered but it
should still turn.
I had so many problems with M2's controllers that I replaced my two with
Green Herons and no more issues after that.
Les W2LK
On 10/27/2019 12:05 PM, George Skoubis wrote:
Hi,
I purchased a used TX-489 and just put it up Friday morning before CQWW.
It came with a M2 2800 rotor with the 2800PX controller. The rotor wasn’t
working when the tower was taken down so the previous owner sent it to M2 and they
fixed the reed switch and shipped it to me.
The tower is around 350 feet from my shack so I am going to run conduit for
the hardline and rotor cable but I wanted to get on this weekend so I just
unrolled the cable and have it laying on the ground.
I have 500 feet of 18 gauge 10 conductor wire between the base of the tower
and the controller. I connected 4 for each DC lead and two for the sensors. A
chart I found on the web tells me 4 18 gauge conductors equal a 12 gauge wire.
My rotor turn turns the antennas but will only turn them about 200 degrees.
I tried doing the auto calibration but it continues to do the same thing.
Is there some limit programmed in the controller I need to clear? Is 18
gauge too small for 600 feet on the two sense wires?
I will be cutting the rotor line to length when I get the trench dug for the
conduit but the desert is hard here and I’m waiting for my excavator.
Thanks
George / W7GES
Sent from my iPad
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