Need help understanding this object that came in the mail addressed to me from a ham shop in TN. And I didn't order this thing either but I was waiting for a MFJ-918 1.1 current Balun which came the next day. This MFJ-915 in suppose to be hooked between the radio and the antenna and it sounds like it is for mobile radio systems. HELP Anybody ever use this thing and if so what is the benefit of using it and is it meant for 11 meter radio? I'm all ears !