Power Passing Splitters/Rf powered Amplifiers - Where to buy in Dublin?

http://www.amazon.co.uk/dp/B000NG2RUC/ref=dra_a_cs_mr_hn_it_P1400_1000?tag=dradis-21

The above cannot be sent by amazon to ROI.

Also need f-type connectors or similar - do all F-type connectors allow 9V DC current to pass for sky Magic eye?

Does a standard coupler (normal co-ax/or f-type) allow 9V DC current to pass?

Would really appreciate this. I have Rf2 9V power going via co-ax to cavity junction box at side of house where pre-cabled co-ax then leads off to various rooms. It's a second hand house, none of the co-ax at the junction point is connected and tehre are no boxes on the walls, just blanked off.

I'm trying to join up the co-ax at this junction to use a magic eye and would hope that I could do this with a power passing splitter.