Dish Tailgater

soonernation wrote:
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I have one coax connection outside in my utility cabinet labeled "Satellite/Cable".

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On the inside, I have one coax jack on the same plate as the antenna booster. Right next to that, I have another plate with two coax jacks that basically have a coax jumper connecting them together. I have not tried to pull the cables to see which devices are impacted when disconnected.

That is the way my Montana was wired. The external connection goes via coax cable to the dual coax plate. One of the connectors is the incoming from the external connection, the other goes to the antenna amp/switch box. The jumper plate simply redirects the signal to the ant amp/switch box and gives a place to connect to a sat receiver if desired.
Initially I removed the jumper and determined which connector was coming from the external connector. Then added a short coax cable from that to the vip211k receiver input. Then an HDMI cable to the living room TV (my plate was conveniently located in a cabinet under that TV). Then I connected a coax cable from the vip211k coax output to the other side of the dual plate. That sent the sat signal to the bedroom TV. That would probably send it to both of your other two TVs.
If I wanted to watch park cable instead of setting up the Tailgater I had to disconnect the coax to the vip211k and replace the jumper coax. Often did that for quick overnight stays rather than setting up the Tailgater.
To simplify matters, I added a second external coax specifically for the satellite. In my case it was pretty simple since the location of my TV cabinet allowed easy access to a side wall and I simply drilled a hole in the outside wall and installed a new external coax connector with a rubber cap and a short RG6 coax to a new single coax wall plate at the TV. And I added a bidirectional splitter in the old line so that the park cable signal and the coax signal from the vip211k both went into the existing internal coax wiring at the dual coax wall plate.
With this arrangement I can watch sat on the living room TV, and simultaneously watch sat or park cable or external antenna on the bedroom TV.
Have only done that to see if I could, but the ability is there.
In case you are not aware, when you travel outside your home area and cannot receive your home locals, you can call Dish and give them your new "service address" (address of the RV park) and they will reprogram you for the local channels of the nearest city. If you do not know the exact address just give them "111 Main Street, nearest local town". Your "billing address" does not change. Nice to get network programs in the correct time slot if in different time zones and to get local news and weather information.