To watch a 3D channels the things you need and a 3D channel
1. A 3D ready Plasma, LCD or LED TV with 3D glasses offcourse, and i think most of 3D ready tvs are Full HD
2. At least HDMI Cable version 1.4 or higher to get the best Picture quality in 3D
3. Full HD and 3D Ready Set Box which i guess Airtel, Tatasky and D2h set box are already
Now for 3D channel
A DVB S2 Transponder (TP) with Double the space required compare to a single Full HD channel.