yes RDTV hd set top boxes and HD DVR are DVBS2
as 1 tp 12523 H 30000 was previous on DVB S now they converted that tp to DVBS2 . as DVBS can have 7 hd channel while DVBS2 can carry 8 to 9 HD channel.
Regarding older SD boxes they are DVBS . but i think now new sd boxes given by RDTV are DVBs2