Has anyone mounted the ATAS-100 on the roof of a Ford Explorer? If so, does it pose a hazard of striking trees or parking garages? How do you handle that? Has anyone used the electric tilt-over mount available in Japan? Does it adequately ground the antenna? Thank you. .Pres Waterman.W2PW c/o Patchogue 112 Ford//Kia 112 Long Island Ford and Kia Dealer GO BILLS!