Dish and OTA running through one cable

I have all cables running into the house through one location in the basement.
I recently got dish but not local channels. What I want to do is run both
dish and antenna through one cable coming upstairs to Samsung
50" HDtv. The TV does have two inputs, but I only have one cable running up stairs in that location, no way of running two, without taking down walls.
I did manage to run long cable from another out let accross the room and get both, but don't want cable laying in middle of living room.
Is it possible to run both through same coax cable?
Thanks for any input.

Yes you can do that with a diplexer. You will need 2 of them. #1 goes outside there you run one feed from the sat to the sat input then connect the cable from the antenna to the antenna input. Connect the cable going to the house to the output of the diplexer.

On the inside of the house you will use #2 diplexer taking the feed from one of the cables connected to your sat box, connect it to the diplexer then use the two outpust, one for the sat and the other to the antenna input.

I have done this many times with excellent results.

I am not quite clear. Two separate cables come into the house. One from antenna and one from Dish. (is Sat referring to the Dish?) Can I use the diplexer in side the house only? What is the purpose of the one on out of house.
thanks

I am not quite clear. Two separate cables come into the house. One from antenna and one from Dish. (is Sat referring to the Dish?) Can I use the diplexer in side the house only? What is the purpose of the one on out of house.
thanks

You need a set of two diplexers designated for the OTA and Dish frequency's. One is used outside the house to combine the two signals (Dish and OTA) together and the second inside the house (you probably want this one close to the receiver) used to separate the two signals. Note that the diplexed signal cannot have a switch between the two diplexers.

I got it, found pic on internet, thanks this will help a lot.

I got it, found pic on internet, thanks this will help a lot.

Please post that link for all of us here...

Any particular diplexer?
I have DishNetwork 500 with a DPP44, connected to a 722 DVR.

I got it, found pic on internet, thanks this will help a lot.
I found this diagram
http://www.prosatellitesupply.com/images/winegard_dp-3020-2.jpg
Hope this helps.
Edit: Sorry this is pic for DIRECTV.
Here is the page.
http://www.prosatellitesupply.com/SATELLITE_DIPLEXERS_and_SPLITTERS.htm