I have just finished hooking up 105-110-119 on primestar oval dish. Legacy Lnb for 110 and 119 and Ku Lnb from primestar dish. I used SW21X switch to connect 110 +119 to Sat1 on SW21 switch and hooked output from KU lnb 105 to Sat 2 on SW21 switch. Works great. Signal strength -105= 90/92 110= 105/108 119= 108/112 You have to use DP Receivers or the SW21X switch will not work. You can also use SW41 switch to hook up 4 Satellite positions useing Legacy Lnb,s and DP Receivers.