It’s funny I just added a ground plane to my Nagoya UT 72 mag mount that I’m using for my house. I had it laying around and decided to use it for my mobile unit when I’m home until I can get a proper antenna . I went to Lowe’s and got a 24x24 sheet of metal for 15$ mounted the antenna and popped it up on the roof used it all day yesterday seemed to work well Sent from my iPhone using Tapatalk