Practical: If what is misconfigured, red LED if OK, green LED lights up. It's really simple. What ?: The retrofitting of an existing satellite system with the TechniSat router Mini 2 / 1x2 it is possible to use the twin function of a receiver according to EN50494 standard over 1 coaxial cable. The function is also often SCR or Einkabelstandard, CENELEC EN50494 Purpose + Advantage: In this way similar to the laying of a second coaxial cable from the matrix to dispense with the receiver in my case it would have been relatively complicated. Requirements: You need of course to the satellite dish first time the possibility to connect 2 receivers, either matrix (distribution of LNB connectors), a Quattro-Switch-LNB or a twin or quad LNB. The previously unused output of the array, the needs it really so that the signals of the two outputs can then be modulated by the router on the cable to the Rec.! If you use your satellite system in an apartment block or otherwise not in their own hands, did only ask the operator of its satellite system (lessor or similar). The receiver demodulates (separates) the back if it is configured to, in my Media Receiver 500 satellite (from the giant pink with the T) was the comfortable on the Config menu. This is "watching of program 1" and "recording program 2" at the same time possible, and works well. all in all: configure Hinbauen receiver fits and off you go. Great Product !!!