What is a multi-switch and what is it used for?
A multi-switch takes the input from both of the LNB’s (both cables from a dual LNB dish have to be connected to the multi-switch)…it then locks one of the LNB’s to always look at the even transponders and the other LNB to always look at the odd transponders. This is why a multi-switch only works with Dual LNB’s and not single LNB’s. The switch then has multiple outputs to receivers (4,8,etc). When you connect the receiver to the multi-switch, the switch determines which of the two LNB’s the receiver needs to look at depending if it needs to view odd or even transponders. When you change the channel, the switch then swaps your connection to the other LNB when needed. With a multi-switch, the LNB’s never change which side they are looking at.