I have a True vision satelite system, which was put up when the house was built as I did not have time to looking into anything else. I have one simple question what other set top boxes can work with the True vision system, that share the same satelite? this is my first option.

anybox from Infosts, dynasat, PSI, 9sats etc all work on the same satellite

Do any boxes work from the CTH satellite as i now have a CTH dish and a cancelled CTH service.