I know this topic comes up every couple of months. I have a group of friends who are radio guys. In the past we used MURs, then GMRS, and even some public safety stuff. Most of them are hams also but not all. Solution. Get a UHF Land Mobile frequency and do what we want on it. Yes coordination can be a pain, but most of the frequency coordinators can give you a good idea of frequency use in your area. I think all in all we spent around $500 but they got a license, do DMR and used the same repeater site they had for the GMRS stuff. Bonus was as guys want ot come online they no longer have to get a GMRS license. I know this isn't the goal here, but if your set on a DMR radio go this way. We still use multiple GMRS repeaters.