Sixty years ago, the FCC required at TV new sets be capable of receiving UHF and VHF. Should HD be required on all broadcast radio receivers? HD is not really catching on. Manufacturers mostly don't do much to support HD and retailers don't seem to be doing much to sell it. Of course, broadcasters could be doing more to generate interest in HD (just as there was little interest in FM until the FCC restricted AM and FM simulcasting and broadcasters started offering new formats that generated public interest in FM).