If one uses this coupling to two satellite receiver (or both tuners of a twin receiver) to put on a LNB, you have both set up so that they each horizontally only the same band of the four possible (high / low band / vertical) Request. Otherwise threaten the basis of false control signal conflicts band selections, or even damage.
Then it's safer to express satellite distributor (SAT needs in the product name are) to take, as this example SAT Distributor 2x 5-2450 MHz - digitally compatible. They have installed a control signal protection.
I had therefore bought me from the beginning, but I'm not sure if technically less versed customers would notice the difference at all technical.
3 stars as a warning! ABSOLUTELY! belongs in the product description (if it is already offered here), because Amazon is not a trade buyers Portal, but aligns to end users.