As I said in my last "book", it looks and they imply that is just a simple F Connector now. They talk about using a -10dB signal attenuator that you can buy at a local electronics store, RadioShack, so I would take away from that it's a standard F Connector. Plus I have a ton of the -10, -15dB attenuators from all the previous installs and swaps throughout the years. If only the tech that came by a couple months ago had a Hopper on board, I could have touched one and known immediately. I think as Matt G said it was an M10 fitting which may have only been on the v1, since that was the only unit known then, or it was hand me down info? Everything I have seen to date on the v2 implies it's a standard "F" fitting. Which would be great for me. Although, I do have some M10 stuff that I bought when RadioShack.com closed their B&M stores and I grabbed a handful of fittings out of a bin not paying attention to what they actually were thinking that they were "F's".
Did you ever find a buying source for the M10 connectors?
But did a quick IPv6 Google, really fast, search and came up with this:
They look like the correct thing . . .
Seems like this measure is predominately a European Auto or Plumbing part size.