Hoping to Dominate Radio

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HD Radio has a long way to go — and the technology"s developer acknowledges it.

However, the Columbia, Md., company is confident HD Radio will catch on.

"Five years from now, you won"t walk into a Best Buy and say, 'I want an HD Radio." You"ll just say, 'I want a radio" — because that will be the standard," said Robert Struble, chief executive officer of IBiquity Digital Corp., a private company that owns the rights to the technology.

HD Radio combines digital signals with traditional AM/FM analog signals, improving sound quality because HD receivers can filter out typical distortions that occur when the signal encounters a tall building or a large hill. It enables broadcasters to offer multiple channels using the same amount of radio spectrum.

Today, listeners must buy a special HD Radio receiver to decode the combined digital and analog transmissions. Several manufacturers make 50 models of HD Radio receivers, which can range from $99 to more than $1,000. HD Radio requires no subscription.

According to IBiquity, HD Radio boasts CD-quality sound on FM radio and traditional FM-quality sound on the AM airwaves.

About 1,500 of the country"s 15,000 or so AM/FM stations are broadcasting in HD. HD Radio programming is available in the top 250 markets, Mr. Struble noted. In the Washington area, there are nearly 30 HD Radio channels that range from 24-hour bluegrass to oldies to unsigned bands.

Radio stations that have multiple HD Radio channels air a digital version of their marquee programming on the first channel, using subsequent channels for new offerings that might not make economic sense to air on AM/FM airwaves. Most broadcasters have rolled out HD Radio channels as commercial-free, though Mr. Struble pointed out that the decision to air commercials is up to broadcasters.

HD Radio listeners are hard to count because they do not subscribe to the service and radio ratings firm Arbitron does not measure HD listening. Mr. Struble said receivers number in the "hundreds of thousands."

IBiquity earlier this month signed an agreement with Apple Inc. to allow listeners to "tag" songs heard on HD Radio for purchase on Apple"s ITunes music service. New HD Radios equipped for ITunes tagging will allow the listener to store song information on the receiver. The new receivers will be released in time for holiday retail sales, Mr. Struble said.