i was amazed about the thing i am going to tell you now.so here is the thing-i live in mumbai but for religious function i went to my village in rajasthan.i was not having cable connection in my tv.so i called cable operator and he connect the tv with cable and without set top box.All channels were coming but with airtel logo at bottom which usually comes when we connect it with set top box.i asked cable operator and he told that he is having one airtel digital tv dish and from that he is providing without set top box.i asked again what you did so you require no set top box and just an RCA cable but he refused to tell and told that i cant reveal my business tricks.so how can we connect and receive channels if we have dish but not set top box.