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ResearchIn addition to sustaining work with stations, NPR Labs actively competes for and executes grants pertaining to public radio technology, accessibility, and system improvements.
- As a step toward implementing the Local Community Radio Act (LCRA), the FCC released a summary list of LPFM allotments for 155 radio markets in its recent Third Further Notice of Proposed Rule Making (MB 07-172). NPR obtained a copy of the FCC’s computer program and prepared detailed reports from the program for each market, which may be helpful in examining the impact on FM translator applications, which are involved in the proceeding.
- DRCIA
NPR Labs completed their DRCIA project in 2008 - an exhaustive 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 DRCIA to download the final report.
- Program Associated Data
- NPR Labs' PTFP work has culminated in the NPR Labs Online Viewing Applications (see below). Visit the PTFP page for more information and to download the full report (PDF).
- NOVA
This study performed an in-depth analysis of the current market coverage for each FM and AM station that can guide station-planning efforts to improve coverage and services.
- NOVA TV
This study performed an in-depth analysis of the new market coverage for each public television station that can guide station-planning efforts to improve coverage and services.
Audio samples have been produced to demonstrate the impairments from elevated IBOC transmission power.
The following samples use a real automotive receiver with a fading environment and RF noise accurately representing the receiving conditions for FM stereo mobile reception at the 60 dBu contour of a desired station. The interfering station signal is a first-adjacent channel at an equivalent field strength of 54 dBu, resulting in the 6 dB D/U contour protection ratio required by the FCC rules for most FM stations. The samples titles indicate the conditions (interference from analog-only, analog plus 1% IBOC and analog plus 10% IBOC).
Technical details of the preparation of the samples
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