It's a Wilson, (perhaps a 4' Flex ??) I also have a question for Kitkat.. Did you have any problems with your SWR before you grounded the Wilson's "ground wire" ? And if so did it make a big difference ? I was hoping I would not have to.
I'm getting ready to mount a couple of antennas on "Doc's" swing out tire carrier and I am concerned about ground plane/SWR problems. It also looks like you are running an extra ground wire from the mount ? Is that true ? I am doing that because of the possible poor grounding due to the swing out.