I have airtel MPEG - 4 STB and connected to common dish in building. I'm currently using it for one TV. Since dish is common I can not change anything from dish or STB side. I have one free to air set top box (i Guess MPEG - 2) can I connect it with airtel setup to receive channels? I would like to use it for other TV at home.Please adviceThanks and regards,