Dont know where your at on this eveready1289..3 days ago but
There is a tv hook-up on the counter by the sink, with a little black switch on it. What is the little switch for? A red led comes on when switched, no red led the other.When switched on sends 12v thru center wire of the coax cable/ant wire to the board inside the head. Yes, the board inside the head is a signal amplifier for over the air signal. Led just an on indicator. If the board inside head bad, signal wont pass thru from ant. whether or not its receiving power-. (However if its not getting power signal and board good will still pass signal just weaker.)
Unless near a strong station, ours at least, needs to be on to get reception. You can test output with a meter, when on, should be 12v at center wire of coax on roof before it enters head. If no power, test at inside plate Or with another pieces of coax) to verify not ant coax. (Also test theres no continuity between coax center and outer shield-short no reception)
Also there is a small hole on the same plate below it, about 1 inch in dia. or so. What is that. Simple 12v power outlet for 12v TV (or other low amp 12v use). If your using inverter or other 12v outlet fine, its not required to be used for reception.
That isn't a tv amplifier switch is it? yup, you were correct
Can I get the antenna gear out by myself and run new cable, or would the cable probably be alright? (test)
The worm gear is broke. Thats a problem, sure looks similar to a Winegard part but wouldnt guess if interchangeable.
I went up and took the top off. Its a SignalCommander, whether that is the make of model? So I know its not the tv that was in the camper, now I know that much.gghjThough I might switch to more readily available Winegard
Sensor 3
![](http://i.imgur.com/3iO8Dke.jpg)
(FYI not for price but typ.complete kit)
If you have room Id go the Sensor IV-bit more but the added 'wingman' does improve reception over standard III, though can be added later.
However if you can narrow down parts needed they can still be had direct from Antenna Tek
http://www.antennatek.com/acces.php But if you need head board (even Winegard for some reason doesn't offer separate) you'll need complete head and parts cost adding up. They sell new ant kits reasonably
Antenna Tek.comGood luck