You dont need a y adaptor ! You need a sat c kit .
Dtv sold 2 kinds a oval dish that get 101 110 and 119 the dish are called Para Dos. There was also another maker that made a ovel dish called a KTI the KTI Dish has a Sat C Kit built inside the arm of the Holder of the LNBs. This enabled you to get 110 101 and 119 with out a sat c kit . Iv been a Big tester of DTV for over 6 years let me know if there something eles you need .