Thanks for the responses. The nanoVNA I have now I managed to break the s11 connector off the circuit board but I did repair it successfully. Then I 3D printed an enclosure to help protect the connectors but it only works for BNC which is a pain to remove because I find myself using the SMA more. I'm hoping the h4 will have found a way to relieve stress on the connectors. Also I do work with crystals so I'm also looking for that extra resolution which hopefully it will have. Also extended frequency to 3 gigahertz frankly I have no use for that right now because primary interest is qrp work mostly on the low bands.
