NPR: FM Modulators Should be Recalled
Washington - Oct 26, 2006 - According to a story on the Baltimore Sun's website, National Public Radio (NPR) has asked the FCC to recall the FM modulators that consumers use in their cars to receive satellite radio and play Ipods.
At the end of July, NPR Labs released the results of a study of modulator interference. The results showed that 40 percent of the devices on the road were producing signal levels higher than the FCC mandated limit. With millions of FM modulators being sold each year in the United States alone, this signal excess, the study claimed, could be resulting in interfence with FM broadcast services.
To read the full NPR Labs study analysis, visit www.nprlabs.org/public/research/FMModulatorUsage.pdf.
NPR's study findings are similar to a previous study conducted by the NAB. The NAB study, delivered to the FCC at the end of June 2006, found that 76 percent of the devices it tested violated the power limits. One device transmitted a signal that was 20,000 percent stronger than allowed by FCC rules.
Acceptable Use Policy blog comments powered by Disqus
[an error occurred while processing this directive]
Today in Radio History
The history of radio broadcasting extends beyond the work of a few famous inventors.
EAS Information More on EAS
The feed provides feeds for all US states and territories.
Need a calendar for your computer desktop? Use one of ours.
Information from manufacturers and associations about industry news, products, technology and business announcements.
This high-visibility and high-traffic area got the full acoustic treatment.
Browse Back Issues[an error occurred while processing this directive]
Also in the May Issue
- Remote Access and Site Connectivity: Wireless
- Standards of FM Allocation and Interference
- Side by Side: Mic Processors
- Field Report: Deva Broadcast DB4004
- Field Report: APT WorldCast Systems Horizon NextGen
- New Products
- 20 Years of Radio magazine: May 1994