F-Type Coaxial Cable Connector Couplers [2 Pack] – Coax Cable Extender | Coax Coupler for RG6 RG59 RG11 | Nickel-Plated F81 Barrel Connector for TV, Internet, Satellite, MoCA

Get an F81 Barrel connector for the ISP to modem segments so that you have a better signal, although if your modem is getting a good signal it may not make a difference. No need for MoCA filters since the ISP / Modem connection is isolated. Yes, get the 2 way splitter for your MoCA LAN network. Connect the MoCA adapter from the router to the IN and the other 2 MoCA adapters to the OUT.

If you only have one path, use the F81 barrel connector in the utility cupboard to connect the two segments that you need for your connection. If you want to provide connectivity to 2 rooms, get a 5-1675mhz two way splitter and three MoCA adapters, one at the router and 1 for each room.