Looking at the diagram for having 8 LNB's through 2 diseqc switches and an ecola 22k switch, is there enough voltage there to power everything or is an external power source needed to power everything?
The Ecoda 22k switch will pass power to both ports at all times, in some arrangements powering up un needed lnb's. Probably not a problem for most FTA receivers though. The other switches power only one port at a time.