@ploog Youre a wealth of good advice. They need to hire you as a moderator and tech support 👍🏼

@ploog You think I should cap mine on the gocoax adapters? I've got a handful of terminators around. Do you know I'd there's any active data passing between the RF and data ports when the RF port is not in use? If there is would a 75ohm cap stop it?

Thank you! This is exactly as I suspected. My setup has an isolated cable (RG6) from gocoax adapter to gocoax adapter. No splitters at all, nothing else connected anywhere in that line except a 3GHz (as you stated) barrel connector inside my distribution panel. Im still going to get my hands on a spectrum analyzer but I cant see how the moca data could leak back when it's isolated on the other side of a modem AND router. I'd rather not use the filter if possible even though I bought one. My house was built in 2007 and I'm the second owner. What's surprising is they ran really nice Cat5e but wired every jack for phones! Further, many of the locations didn't have enough wire in the box to pull out and make an RJ45 connection. Bloody idiot electricians. There should be at least 6" of Cat5e in the box but some of mine only had a couple inches making it impossible to wire in a keystone hence the need for the gocoax. Moca info Is reallly lacking. I even watched the President of the Moca alliance guve a very uneven and vague explanation of the filters. It seems that Moca was developed to operate in parallel and simultaneously with cable TV and Tivos hence you see the TV input on all these Moca adapters. I would contend in today's world Moca is being used way more for network requirements than TV/TiVo. The next generation adapters should completely eliminate the TV input and just make a basic network adapter. That would greatly simplify the connection specs and properly address the filter issue.

Thank you. I ordered one with my 2 adapters since it states the pass through frequency is what my ISP is using. There is a lot of conflicting information out there though. Many are saying you do not need the filter in my kind of setup where I'm essentially using moca as a Ethernet cable with no connections to any coax anywhere else in the house. Better safe than sorry but I think I'll look into some kind of analyzer to see if I can detect the frequency bleeding out. It would be good information to have.