So my issue is I have CAT5 coming off my outside service connection but my connection on my RV is Coax. I have a "Homerun Line" from that Coax connection outside to the inside of my RV where my Wifi Router is Connected via Coax, then CAT5 out to to my wife's computer. So my issue is getting that CAT5 to Coax connection outside. Will your product help me with that. And will I need one inside and one outside?