[chuckster57]

Ok, a couple of ways to decipher. If you can get the booster plate off, the back side will have molded labels on it. The antenna and park cable usually are attached to the board and the satellite is separate.

Ok now for a longer way. You will need a piece of coax and a barrel connector as long as your dish has 2 coax outs. There should be a primary and a secondary. The secondary should have a "cap" on it and if you take it off it looked like a coax end with the center signal wire in it.
Take the coax and attach it to the connection OUTSIDE, and then using the barrel connector, put the cap on the end. Go inside and attach a short coax the the suspected outlet. Measure using an Ohm meter and you should see 75Ohms. Then simply remove the cap outside and measure again. It should be an open circuit.

There are coax testers, I have one, that will tell you a few different things. Big box stores have them and contain instructions for identifying what's what. Not sure the cost as I bought a high end testing test.