i want to know dish dvr

i want to know dish dvr is available and i can take signal in iran i have taken tatasky its have no signal but in my starsat receiver whatever dish tv have i have taken but its lock but zee smile,star utsav ,dd all channel picture and sound are rock 5.1 dolby digital i have seen dish tv have more featured than tatasky specially dish dvr and i have seen nss 6 is covering all middle east, africa,china ,malaysia,singapore,dubai i think iran i can take also please guide me tatasky is loss of money .