If I had the time purchased directly ...

I've built up a multi-subscriber satellite system and first installed two low-satellite boxes from the Far East.
The connection was there quite fiddly and the result was sad: At a can I had on only one cable a signal, on the other cheap tin none at all. At first I had to multiswitch suspected then even the satellite cable.
With the courage of despair I bought two of these Hirschmann doses, the connection was much easier and I had on all four cables (two doses) directly a signal!

So better yet buy something clever!