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Digital Radio
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Coverage of developments in digital radio, with an emphasis on IBOC HD Radio as implemented in the United States.
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Are Elevated FM IBOC Levels a Good Fix?
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Fans Seek Wider Coverage, Robust Signals; Critics Fear More Interference
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by Leslie Stimson, 4.09.2008
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An effort to seek regulatory approval for a voluntary increase in authorized FM IBOC power levels is up in the air.
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RVA Takes ‘Software-Centric’ Approach
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ENCO Installation Is First Commercial Use of Digigram Visiblu for Routing Audio Over IP
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3.26.2008
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For the first time, the audio stream contains both the audio payload and embedded automation control for both source and destination.
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Making Sense of Metadata
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Managers Must Find Ways to Deliver High-Quality PAD While Limiting Cost
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by Daniel G.P. Mansergh, 3.12.2008
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One of the most compelling features of digital radio systems is the ability to complement audio programming with real-time delivery of text and other information on a receiver display.
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Let’s Go Shopping: HD Radio in Cincy
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One Man’s Buying Experience in Ohio Suggests The Receiver Push Is Having Mixed Success
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by Thom Moon, 3.12.2008
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I made the rounds of stores that sell electronics in the Cincinnati area. What I found was some improvement; but a lot is yet needed.
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Satellite Radio Category Matures
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Receiver Market Was Relatively Subdued This Winter, as It Awaited Word on Merger
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by Leslie Stimson, 3.01.2008
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Satellite radio is undergoing a sea change as more of its receiver sales shift from aftermarket to OEM-originated.
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Accessible Radio Project Grows
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Towson, NPR and Harris Launch Center for Accessible Radio Technology
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by Leslie Stimson, 2.13.2008
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Dr. Ellyn Sheffield, Towson University professor and NPR Labs researcher, plans to spend the next six months asking people in the visually-impaired, hard of hearing and geriatric communities what features they’d like to see in an HD Radio.
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A Digital Pitch Takes a Personal Touch
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VPR Takes an Active Approach to Explaining Digital Radio to Listeners
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by Rich Parker, 1.16.2008
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“Can I get regular FM on an HD radio?” “Why do I need to get a new radio? I already have very good radios.”
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Pitfalls, Procedures of HD-R Measurement
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Measurement Is Not Simply a Matter of Taking a Spectrum Plot at a Modulation Sample of the Digital Transmitter
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by Benjamin H. Brinitzer, 1.02.2008
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As I travel around different facilities, I find there is confusion on the proper way to confirm and measure IBOC mask and spectrum compliance.
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Personalized Radio for RRS Underway
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NPR Labs, IAAIS Are Developing ‘Radio Anytime’ Capability for Visually-Impaired Listeners
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by Leslie Stimson, 12.19.2007
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NPR Labs and the IAAIS are working on a way for the visually impaired to listen to their radio reading service when and where they want to.
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Rochester Station Says IBOC Interferes
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WYSL Gripes About WBZ in First Official AM Digital Complaint
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by Leslie Stimson, 12.05.2007
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In what is thought to be the first AM nighttime IBOC interference complaint filed with the FCC, Radio Livingston Ltd., licensee of WYSL in Upstate New York, claims that adjacent-channel IBOC noise from WBZ in Boston is interfering with its daytime and nighttime signals.
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Is AM Skywave Broadcasting Finished?
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Using a Popular Analyzer — A Pair of Ears — The Author Finds Outcome Inconclusive
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by James E. O'Neal, 11.21.2007
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I grew up in a small town with no regular local nighttime radio service; early on I became close friends with 50 kW clears in distant cities.
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‘The IBOC Handbook’ Cracked Open
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From History to Current Implementations, Maxson Offers a Comprehensive, Dynamic Read
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by Thomas R. McGinley, 11.21.2007
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Anyone interested in how IBOC actually works at a more technical engineering level has been hard-pressed to find much published documentation on the subject, other than white papers published by the technology developer itself.
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Citadel Re-evaluates AM HD-R Nighttime
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Interference Complaints Leads to Nighttime HD-R AM Suspension
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by Leslie Stimson, 10.24.2007
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Citadel Broadcasting halted AM nighttime IBOC operations in early October after receiving interference complaints.
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In Search of an HD-R Receiver
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The Author Describes His Experiences Shopping at National Brick and Mortar Retailers
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by Richard Factor, 10.24.2007
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I had never, not even for an instant, ever heard an HD-R channel, so I decided to purchase one.
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HD Radio, Meet the iPod
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Tagging Garners Attention; Polk, JBL Radios Combine Radio and iTunes
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by Leslie Stimson, 10.10.2007
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IBOC proponents say merging HD Radio with iPod technology makes HD-R “cool.”
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HD2 Stations: What’s in Your Radio?
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Will Multicasts Rise to the Level of ‘Oh, Wow I Have to Go Out and Get a Radio to Hear That’?
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by Ken R. Deutsch, 9.26.2007
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Early AM and FM programmers had to make up the rules as they went along. The same phenomenon can be observed in the new world of HD2 today.
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Ibiquity Expands Its Test Lab
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Receiver Characterization, Transmission Systems to Get ‘Stressed’ in Tests
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by Leslie Stimson, 9.26.2007
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When Ibiquity Digital Corp. recently moved to the other side of I-95 and closer to the Baltimore/Washington International Thurgood Marshall Airport, it leased most of a floor in a larger building than it had occupied previously.
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Study: HD Radio’s ‘Tepid Growth Story’
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Bridge Ratings Says ‘We Do Not See HD Radio as a Significant Contributor to Boosting Listening to Terrestrial Radio’
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by Paul J. McLane, 9.12.2007
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Is HD Radio up to the task of helping traditional radio compete with other new media?
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For AM IBOC, The ‘Real Test’ Comes Now
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But No Mad Dash Is Foreseen
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by Leslie Stimson, 9.12.2007
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“The real tests come now.”
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‘If There Are Call Letters, There Is an Opinion’
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Radio Engineers Find Little Common Ground in AM HD-R Nighttime Interference Debate
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by Alan Carter, 8.15.2007
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“Some say that the apocalypse is about to begin,” said Tom Ray, vice president and corporate director of engineering for Buckley Broadcasting.
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