I have an ATAS-120 I’m working to mount on a roof rack cross bar using an aerial mount made by the cross bar manufacturer. The mount has 180 degrees of rotation, which is the only way I can mount it on the roof. Otherwise, due to my parking requirements, I would have to mount low on a corner or bumper. In order to do that, I will need a support for the top when it’s folded down. A cradle with something to lock the antenna down. I’m thinking a mechanism on a mag mount base. Just curious if anyone has solved this sort of challenge or knows of resource(s) online where it’s been solved.