IF loop out on FTA box to LNB input on analog receiver is one way.(may need to disable LNB voltage or use a DC Block) The other is a one port power pass splitter. Power pass side to analog, power blocking side to FTA box. If you're using a polorotor and separate (bolted on) LNB, the second way may perform better as then the LNB will always have 18-20 volts from the analog receiver. (analog operates polarity servo) Many don't like only 13 volts. Personally, I upgraded to a LNBF so the FTA selects polarity via the LNB voltage. And used the analog to only move the dish. (connected to the IF loop out with a DC block for analog feeds until I got a GBox)