Stan,
OK, I have found the problem... And it is ME!
First of all let me thank you for for explaining how to calibrate the NanoVNA; although I am well aware of how to do a calibration, it forced me to look at things more carefully.
In my attempt to extend the SMA connections and protect them I ordered some SMA Male-to-SMA Female connectors; OR SO I THOUGHT!
After taking everything down to bare-bones I noticed that the connectors are actually female-to-female! DUH!! I'm embarrassed and I feel like a complete IDIOT, but I put this "out there" as a reminder to others to check everything, even things you "know" are OK.
Anyway, thank you again and thanks for the "Absolute Beginners Guide" PDF; great resource.
Muggs KC3UDZ
Muggs KC3UDZ