Greensleeves
I could not receive Direct TV using existing wiring on my 2008 PC.
I contacted technical support for both ANTENNATEK and WINEGARD about this situation. Both companies provided the same explanation, a DC filter is installed within the wall plate to block any DC voltage on the cable input. The satellite dish requires approximately 12 - 18VDC to power the LNB portion of the dish. This voltage is supplied by the satellite receiver and is required to pass through all cables and any wall plates that are installed. This filtering action is what prevents the satellite dish/receiver from working.
Wall plates that are typically installed in the RV industry are ANTENNATEK Part Number 065840 or WINEGARD Part Number RV7012. These wall plates provide the option of watching TV from the RV TV antenna or from an external cable source but not from a satellite provider.
Solution.
The existing OUTSIDE CABLE JACK is used to connect to either a satellite dish or to the park cable to the coach and a Diplexer is used to route the signals inside the coach. Two modifications are required. First, a new TV wall plate is installed near existing TV wall plate. Second, a Diplexer is installed between the OUTSIDE CABLE JACK and the existing amplifier wall plate.
The Diplexer is a passive device that combines or separates satellite and cable signals. In addition, the Diplexer will pass DC voltage on the satellite port but will block the DC voltage on the cable port. The cable port of the Diplexer is connected to the CABLE IN port of the existing amplifier wall plate and the satellite port of the Diplexer is connect to the TV connection on the new wall plate. The satellite receiver is then connected to the new wall plate. Distribution of the TV signal within the coach is a function of the installed Television equipment.
This is the simplest solution and requires the fewest new parts, however, it does present a problem. Since the OUTSIDE CABLE JACK is shared between the Satellite input and the Cable input there is a chance the Satellite Receiver may put 12-18VDC onto the park cable. To prevent this the Satellite Receiver needs to be disconnected from 120VAC or RG6 cable opened to the Diplexer. The simple solution to this issue is to always unplug your satellite receiver prior to hooking up the RV park cable.
Hope this helps.
Barry
Send me a private email for additional information.