What makes the DirecTV confusing is that fact that they originally had a Slimline oval dish with 4 coaxial wires comes out to the 4 receivers in your house. 2 wires to a DVR, so you could only have 2 DVRs or some combination (there are ways to increase the number of TVs, but a topic not needed for this discussion). Now they use SWM, Single Wire Multiplex. That brings only one wire from the dish LNB so you could use the outside cable/sat connection on the RV to the central wiring cabinet wherever that is. If that location is near the main TV, then you just put the receiver, Power inserter, and splitter right there. You just need a coaxial cable from that splitter to the other receiver in the other room.
There is also a lot of confusion generated by the many odd combinations of wiring a old 4 wire LNB to a multiswitch that is SWM system. That is why my house wiring is so confusing. Once I read the instructions from the Satellite Pro website on their portable dish systems for DirecTV SWM, either Slimline 3 or 5, it became a lot clearer. I've copied their written instructions below, but I'd go to their website so you can look at all the pieces.
How to set it up for 1 receiver step by step.
Set up your Tripod and center mast.
Aline the tripod with the level. (Mast must be perfectly level)
Build your Satellite Dish and install the Dish on the Tripod.
Adjust the satellite dish to the required compass heading and elevation. (Info provided on your satellite receiver under installation)
With your 50 ft cable, Connect one end to the Satellite dish and the other end to the Power supply.
From power supply, connect small cable to your receiver.
Turn ON the Receiver, go to the setup and alight the satellite dish.
Once the strongest signal is acquired, you will be ready to watch TV
How to set it up for up to 4 receiver step by step.
Set up your Tripod and center mast.
Aline the tripod with the level. (Mast must be perfectly level)
Build your Satellite Dish and install the Dish on the Tripod.
Adjust the satellite dish to the required compass heading and elevation. (Info provided on your satellite receiver under installation)
With the small jumper cable, connect one end to the satellite dish and the other end to the 4 way splitrer, (use the one port on the splitter)
With your 50 ft cable, Connect one end to the RED port on the 4 way splitter to your power supply.
On the power suply connect the 50 ft cable to the (power to SWM) side
From power supply (Signal to IRD), connect small cable to your receiver.
Turn ON the Receiver, go to the setup and alight the satellite dish.
Once the strongest signal is acquired, you will be ready to watch TV
To add another receiver, just add another cable to any of the remaining ports of the 4 way spitter to the new receiver, NO NEED to have another power supply.
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