understand it this way that if a dth operator has a 54 mhz transponder so it will b able to add 16 plus 50 percent more which is 8 chs so in total 24 chs in that tp, now if the same op is using mpeg4 technology so it can easily add 48 s chs
i hope u got it now
simple bro if dth op can add 32 sd chs in good quality in a mpeg4 tp 36mhz tp so if a tp has 50 times more space which is that it is of 54 mhz so sbviously it can add 16 chs more an relay 48 sd chs