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In Reply to: RE: Explain to me how a rotor works posted by sberger on September 05, 2013 at 19:42:30
You've got your motor, that's the green unit in the picture. The mast, which holds the antenna, fits into a hole in the motor. They are attached to the lower mast (mine uses clamps).
The black box is the controller, which is kept inside the house. It plugs into the wall (AC). The controller has three terminals on the back, to which a three wire ribbon cable is attached. That cable is run to the roof, and attached to the rotor.
The motor turns the mast which has been inserted into it, and so the antenna turns. The controller will only allow the antenna to rotate 360º, and it stops. Then you have to rotate it back around the other way. This is to prevent the signal cable from becoming twisted.
This is clear as mud, I know. I'm tired, and feel like I'm not making a lot of sense here. Hopefully it'll give you a general idea, and if you have any more questions, ask away! It really is a very simple system.
Oh yes, and since it's "safety first", have you grounded your mast? Whether you add a rotor or not, the antenna should be grounded.
Follow Ups:
Thanks. As to grounding I don't know. Haven't been up on the roof. I know that sounds stupid, and it probably is, but didn't even think about it. The cable from the antenna was literally hanging off the roof, and I just pulled it over to the window that the tuner is close to, brought it inside and hooked it up.
How would I know if the antenna is grounded, and how do I do that?
And this can wait until tomorrow. Thanks.
The link below will explain the grounding. It's a safety thing, not a performance thing. Homeowners insurance, and all that.
Somewhere there's a link to a complete installation, with diagramed pictures explaining the whole thing. I did a quick search, but didn't have any luck, and I'm off to work. Try Googling TV antenna installation, etc., and see what turns up for you. Use "TV", only because you'll get more results than if you use FM. The installation will be exactly the same, only the antenna itself is different.
Good luck, and keep us posted.
Thanks. I'll check this weekend. I'd be pretty surprised if it wasn't grounded but good to check nonetheless.
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