I have Direct TV but am going to have it disconnected I know NASA TV is free open to the public. I have to send back my receiver to direct TV. What do I need to get just NASA TV. Can I just buy a receiver and what model will work from say ebay and will the card have to be set up with direct TV or if I just put the card in will it pick up NASA TV or do I need a card. I will be using the dish that is set up now would just like to put a receiver on to get NASA TV. Any one have any info on this.