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Advanced IBOC Coverage and Compatibility Study (Final Report) Available
This report adds sections dealing with compatibility (impairment to analog main FM channel reception from same-station IBOC transmissions) and a means for estimating increases in IBOC coverage at elevated digital powers.
 
NPR Labs Online Viewing Applications for Public Radio and Television
The NPR Labs Public Television Online Viewing Application and the NPR Labs Public FM Radio Online Viewing Application comprise a set of tools that let users dynamically explore mapping and demographic data for PTFP-qualified FM and TV transmitters.
The tools are now freely available your interaction, and are intended for anyone affiliated with a PTFP-qualified FM and/or TV transmitter. Please see the abstracts introducing these tools and the scope of work in these PFTP studies.
 
20100301: REVISED NPR Labs PAD Applications for iBiquity v4.x and later Importer software
NPR Labs has learned that the PAD applications provided free-of-charge to NPR Members are incompatible with iBiquity's version 4.x and later Importer Software. NPR Labs has been working to revise the software, and is developing the replacement using the PADSDK provided through iBiquity Digital Corporation.
The alpha version has recreated the software as a Windows service with 'plug-in' components to operate the desired PAD stream, flexible scheduling to allow different services to push PAD to the same network port at different times.
 
New Accessible Radio Publications
Click here To browse Radio Text Display Final Report: 3 Studies, Best Manufacturing Recommendations For Blind and Low Vision Users, Results from NPR Election Night '08 Captioned Radio Event, and see the NPR Labs' CONSOLIDATED REQUESTS FOR INFORMATION (RFI)
 
IBOC DAB Interference Maps and Population Reports for 49 Public Radio Stations
Click here to see the maps and learn more about them.
 
Digital Radio Coverage and Interference Analysis Study Now Available
NPR Labs has completed their DRCIA project - a monumental 18-month study projecting the consequences of interference between HD Radio and station analog broadcast signals, as well as HD Radio’s overall success in meeting coverage expectations and needs. Visit http://www.nprlabs.org/research/drcia to download the final report.
 
Research heading DRCIA PTFP PAD ACCESSIBLE RADIO

In July 2008, NPR Labs completed a monumental 18-month study projecting the consequences of interference between HD Radio and station analog broadcast signals, as well as HD Radio’s overall success in meeting coverage expectations and needs.

The CPB-funded study, “Digital Radio Coverage and Interference Analysis” (or “DR. CIA” for James Bond fans), produced the first field-validated HD Radio FM coverage prediction model, which allowed us to create – for the first time – maps showing what each station’s interference-limited coverage area would be if it were broadcasting in both analog and digital. The study also reached important conclusions about the effects of raising HD Radio’s current 1% power level to the 10% power level, a proposal that several commercial broadcast groups, the NAB and others have recommended to the FCC.

Download the executive summary
Download the full report

See the IBOC DAB Interference Maps and Population Reports for 49 Public Radio Stations here.


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