The National Association of Broadcasters (NAB) sounded off against signal bleed from satellite radios.

On Sept. 21, NAB President and CEO David Rehr urged the heads of XM Satellite Radio and Sirius Satellite Radio to “voluntarily withdraw and replace all noncompliant satellite radio devices in circulation.”

In a Sept. 21 letter addressed to Nate Davis, XM’s president and COO, and Sirius CEO Mel Karmazin, Rehr called for the companies to replace all after-market receivers that rely on FM modulators to relay the satellite signal to on the low end of the FM band.

According to NAB, a recent study of 17 wireless devices commonly used to transmit audio signals from satellite radio devices and MP3 players to in-dash cars showed that 13 of the 17 devices exceeded field-strength limits set by the U.S. Federal Communications Commission. Furthermore, six of the noncompliant devices exceeded strength limits by 2,000 percent, with another surpassing the limits by 20,000 percent.

“Given these test results, it is irrefutable that satellite radio receivers with FM transmitters will continue to disrupt terrestrial radio services so long as receivers that were shipped prior to the FCC’s recent approvals of new radios remain in the market,” the letter said. The letter was also sent to all five FCC Commissioners.