I'm watching this thread with interest as i'm looking at idea of getting a FBC/Unicable setup but looks like it isn't as easy to setup compared to old/legacy shotgun twin cable 
So this is what I've read so far regarding OP setup:-
OP has a Gigablue Quad 4k STB which comes with 1x twin FBC tuner (according to sponsor) in addition to any optional tuners.
Along with an Opticum Red Robust Unicable LNB with 2x legacy.
Feed from Unicable port on LNB to a splitter then to both inputs on twin FBC tuner. He has tried without splitter so feed from unicable LNB port direct to FBC tuner.
So this is what I've read so far regarding OP setup:-
OP has a Gigablue Quad 4k STB which comes with 1x twin FBC tuner (according to sponsor) in addition to any optional tuners.
Along with an Opticum Red Robust Unicable LNB with 2x legacy.
Feed from Unicable port on LNB to a splitter then to both inputs on twin FBC tuner. He has tried without splitter so feed from unicable LNB port direct to FBC tuner.
