To combine 2 dishes and send to 2 receivers, you will need a switch. Diplexers won't work. HD and SD will be combined in the same cable by the switch, but you will need a separate cable for each receiver.

If you use the 6000 receiver for OTA HDTV, you can diplex an antenna into the cable from the dish.

A quad LNB is not necessary if you only have 2 receivers. Or if you are using a large switch to combine two dishes.

A basic setup: [Link: dishnetwork.com]

This message was edited by Spiky on 07/30/02 14:12.47.