Have a cell phone antenna on top of the rig, but no idea of who makes it or anything about it. At least I think it is a cell phone antenna. It connects with a 1/8" threated stud opening. The coax connection on inside is a BNC connector. Was thinking I could connect my Wilson Sleek to this, or adapt it to a center loaded Wilson Cell phone antenna. But don't know about the 1/8" stud opening. The opening on my Wilson Sleek optional magnetic mount antenna is even smaller Anybody have any ideas what this antenna is for??? It measures 12 and 7/8" from the bottom to the tip. Includes the screw in base.