Yes,you need a hdtv-receiver to watch.
On the market there is also no sd-dvb-s2-receiver for sale
and every new Hdtv-modell is compatible with dvb-s2.
At the moment bulsat is working without a card,but you need
a receiver that can handle softcam or it came with a build-in
emulator firmware.
Sometimes they change the keys,so you must update, to clear
channels again.