You can use the Dish 500 you were given to view any 2 Dish satellites that are approximately 10 degrees apart, 110 and 119, 119 and 129, even 61.5 and 72.

The 119/129 and 61.5/72 combos will get you the most HD because the primary HD satellites are 129 and 61.5.

And remember that check switch.

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Hitachi 57F59; Sony VHP-D50Q - 7' diag on wall
DishNetwork ViP722k; DishNetwork ViP211; DishNetwork ViP211K; DishNetwork 301; 2 - TiVo Series 2's; Accurian 6000; Samsung SIR-T351; Panasonic Showstopper 2000; ATI HDTV Wonder
Hauppauge HD PVR; Sony PS3; Toshiba HD-A3 HDDVD
Dish 1000 on 110,119&129; Dish 500 on 61.5
RS U75-R; Funke PSP.1922