I odered a geosat ck1 and he sent me a dmx 741., I already tried the dmx 741 last year and did not like it to much and i sold it on e-bay for half what i payed for it. Besides that with the geosat ck1 you need a switch to go from c to ku. So I ordered one. But the dmx 741 has a built in switch so you do not need a external switch. but he sent me external switch with the dmx 741.