So the friggin idiots at the FCC smelled bigger money than the 700MHz scam from a couple years ago. They are now tentatively setting the plan to auction the bands off next year. Cell carriers are foaming at the prospect and so is the FCC for the billions of dollars they will make off the deal. There will likely be a 4-6 year changeover until everyone using either instrument/vocal/headworns/and also IEM's will need to throw them away because like the 700MHz systems they will not be allowed to resell abroad. You will start to see a rash of newer digital wireless coming out in the next couple of years too. Every maker in the business is scrambling for it right now to a given extent. The 400 and 500 MHz are still available, but not everyone makes one in those bands. And those bands are already ridiculously full. So is there any reason for concern if you have 600MHz already? Well it will be illegal to use and their will be a big fat fine. Who will patrol the airwaves looking for you. Good question, most likely nobody for the majority of the country, just like with the 700-900MHz bands when they were taken away. And here is the most important question, if you continue to use yours how will you cause problems or get problems from the new Owners of those bands? Likely no getting stepped on from the new Owners and likely the new Owners won't be getting stepped on either. Who will the new Owners be? Big business one and all. Mostly that's where the next Gen of 4G or 5G services, because that's who owns the 700MHz bands. And do I give a damn if Somebody screws up your ability to download porn or cruise CL looking for a new law mower instead of listening to live music? Because your little 600MHz UHF radio station is only traveling about 300 feet on line sight on a clear day, there is very little chance you will cause anyone out of eyesight a problem and vice versa. I know a guy who knows a guys buddy who might have continued to used old 700MHz systems ever since the ban with absolutely no problems and no performance issues. I think they will do the same with 600MHz systems too. The idea that they can't create new alternative methods for cell use is no reason to steal money from the wireless users of the world. I won't sell mine to be in compliance, but I am not going to let them sit around...if you know what I mean.