HD Radio Still in Stasis, But Has New Friend at FCC

2017 came and went with no great movement in the HD Radio space. According to FCC records, fewer than 2,000 FM stations have received authorization to broadcast in HD, which represents an adoption rate of 15% – a number that has not changed significantly during this decade.

On the AM side, although some 240 stations (5%) are authorized to broadcast in HD, this curated list shows that about half of them have abandoned the protocol. Penetration of HD receivers into the automotive space remains at just under half of all new cars sold in the United States and there’s still no meaningful market for non-automative portable receivers.

Yet the broadcast industry would rather you believe that HD is thriving. A new “e-book” from the folks at Radio World, New Directions for HD Radio, contains useful information about ways to optimize the system, including making sure that the analog and digital signals are properly time-aligned, the necessity of seamless audio processing across the airchain, and National Association of Broadcasters effort to standardize the broadcast of metadata on HD signals. One would think those core operational principles would’ve been hammered out nearly twenty years ago when the technology was first authorized for deployment, but it was more important to the industry to make a digital beachhead on the airwaves than it was to deploy something that worked out of the box. Read More

Next Steps for All-Digital AM-HD

Since my run-in at the NAB Radio Show with industry forces spearheading experimentation with the all-digital AM variant of HD Radio, they have been busy. Back in September, testing was underway on stations in Seattle—the eighth and ninth such stations to conduct tests in the last two years—and the NAB et al. described the preliminary results as quite positive.

When the tests concluded in October, the president of the stations hosting them in Seattle said that while the experience was good, some listeners wondered if their stations would be going all-digital anytime soon. Not for at least 10 years, replied the executive, “because regulatory efforts take time.” Read More

NAB v. DPR: Showdown in San Antonio?

The Institute of Electrical and Electronics Engineers holds its annual Broadcast Symposium in San Antonio this week. And if I could be there, I’d be hitting up the last session of Thursday afternoon, for there may be a few fireworks.

There are two planned speakers: first up is David Layer, the Director of NAB Labs’ Radio Technology Committee, who will give a status report on the state of all-digital AM-HD signal testing. The most recent round concluded in Seattle, and depending on who you ask, the results were either spectacular or so-so. Read More