
To receive satellite signals, you need a LNB (Low NoiseBlock). What this does is picks up all the signals being bounced off the dish and filters out selected frequencies and amplifies the frequencies you need. It then sends the required frequencies to the satellite decoder box.
Installation using a Twin LNBF allows programming from 2 satellite locations and connection of up to 2 receivers.The Twin LNBF is the functional equivalent of 2 Single LNBFs and 2 DiSEqC switches combined into a single LNBF.
The benefit of the Twin LNBF is an installation that istypically quicker, easier and cleaner than using separate components.