Welcome to the forum.
The attached image is from the 2006 Admiral SE (not sure if there's a big difference between your model and the SE) owner's manual and you should find a similar or identical video control box in one of your overhead compartments. I'm not familiar with your model but somebody more knowledgeable should be able to tell you exactly where it's located.
It is the control box where you'd switch input from cable, to satellite, to antenna, etc. for the TV, VCR, 2nd TV.
You will most likely need to start your own service with a satellite service as it's specific to the person rather than the RV so in all likelihood, you will not be able to view satellite input without first contacting Dish or Direct, etc. and establishing an account and a service package.
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