Comcast Business just updated our gateway to a Cisco Business Wireless Gateway. Its a model DPC3939B. It includes the cable modem, gigabit router, wireless access point (actual dual, one public, one private) and MOCA gateway. I do not subscribe to Comcast television services. We use a large outdoor OTA antenna. Currently I have a moca adapter connecting the household coax network to the ethernet switch. 2 tivos and a mini are on the the moca network. It works fine. I would like to remove the moca adapter and use the moca built in to the new gateway. But connecting it with a splitter as shown in the Cisco manual will result in both the antenna and the Comcast systems connected to each other. I think this is a big problem. How do I get the moca on to my coax network with OTA antenna still connected. Is there some sort of filter I need to place between them or should I keep them separate and just continue using the separate adapter?