Moved into a place where the builder did not add connectors to the coax runs in the utility box. Before I added an RG6 connector to each cable trying to find the one I needed that runs to my office, I figured I would just plug the copper coax cable straight into the originating goCoax MoCA device, without a connector, just to locate the proper wire I needed. This is what the wire looked like.

I find the right cable, the MoCA lights turn on, everything is working as expected, and I am getting fantastic speeds.
Now, just to add the RG6 compression connector to firm-up the connection between the cable and the MoCA device. I add a compression connector to the cable, screw the connector on to the MoCA device, and now I have no MoCA light and no connectivity. Weird. So I cut the compression connector off, strip the cable again, and just to be sure, I plug the copper coax cable straight into the MoCA device again -- back to fantastic operation. I install another RG6 compression connector, and again I lose connectivity.
I'm using the below RG6 compression connectors.
https://www.amazon.com/Crimper-Coaxial-Compression-Stripper-Connectors/dp/B07GQVJRR2
I'm guessing I may be creating some sort of interference/short with the these RG6 connectors because I'm not installing the connectors correctly or because the compression connectors are perhaps not fit for purpose.
Any thoughts? Any guide to how I should be installing the connectors? Any thoughts as to better quality connectors?
That’s a really interesting and tricky issue with the RG6 connectors causing loss of MoCA connectivity. Here are a few things to consider:
Connector Quality: Sometimes, lower-quality or improperly installed RG6 compression connectors can cause signal loss or poor contact. Try using a different brand or redoing the compression carefully.
Cable Prep: Make sure the coax cable is properly stripped and the braid/shield isn’t touching the center conductor, which can cause shorts.
Connector Compatibility: Some MoCA devices are picky about the connector type—make sure you’re using connectors specifically rated for RG6 coax and MoCA frequencies.
Signal Loss: Adding connectors can introduce slight signal degradation; if your cable run is already marginal, it could push the signal below what the MoCA device needs.