Therefore I bought the Stacker Destacker and mounted behind the multi-switch. The satellite box behind the TV, I did not dismantled, as it should be done when the equipment is actually, but the Destacker simply connected to the Satdose.
What can I say: The twin receiver reception on only one Satkabel functioning properly. I can continue to use all the advantages of a twin receiver and now have a coaxial cable to receive the programs that are delivered over fiber, free.
Also they work at the cable tuner of the TV easily.
There is no loss in signal strength and quality noticeable.
The for-Stacker Destacker belonging PSU I have not needed. The appliances are obviously supplied with sufficient power from the receiver via the Satkabel.
Installation is very simple and easy to accomplish by a layman.
Unfortunately, there are no pre-configured, short connection cable to connect to the multi-switch or the satellite box, there.
This I had to produce with a few F-plugs and some pieces coaxial cable itself. But is not really a problem.
The ingenious device has definitely deserves full marks.
Incidentally, the delivery went quickly through the Amazon Marketplace dealers Wiltanet!