Odd thing happen tonight my wife and I drove to a friends house because he said he had a box of odds and ends parts resistors lightbulbs test leads connectors well I seen a mount and picked it out of the box it was one of those 3/8 inch stud spring loaded quick disconnects for antennas push turn twist well i put that back in the box and grabbed the next mount it was a few screwed together and I looked again and said wait I pulled them apart and low and behold there was just what I was asking about and needed its actually a so239 on one end and a 3/8 inch stud on the other so this will work it screws into the quad mag mount and you can run a wilson coil or this multiband ham antenna I am after.
I couldnt believe my eyes talk about luck!!! but now where the heck did this come from I would like a few more I actually got extra replacement studs aswell in that box of goodies along with a bunch of other stuff. This mount I needed and now have looks brand new. Anyone know where I can get more of these or who made them? like I said its a 3/8 inch stud at one end and a SO-239 standard female coax hookup at the other.
QRN I see the one you actually posted is what Im after but without the flat stock bracket I just want the SO-239 and 3/8 inch stud I just looked and this Bills 2way may have them.