Can I split one satellite feed into two feeds?
This is a fairly common question. What should you do if you only have one feed from the dish, and two sockets on a box? Sadly, you can’t split a single feed from an LNB to let it feed two tuners at the same time.
Why? Satellite receivers send voltage and signals to the LNB to get the LNB to change frequency and ‘polarisation’ (some channels are Vertical and some are Horizontal). If you have two receivers both trying to switch a single LNB, one box will win, and one will lose.
You can get an LNB switch box that will let you switch your single feed to either of two receivers – just not to feed both at the same time. These are no substitute for having two dedicated feeds from the LNB though.