The National Association of Broadcasters and the Association for Maximum Service Television (MSTV) today launched a new print advertising campaign to highlight the repeated malfunctions that have resulted during the Federal Communications Commission's testing of unlicensed, personal-portable devices. The advertisements are running in several Capitol Hill publications this week, including Congress Daily, Roll Call, Politico, Congressional Quarterly, Communications Daily and The Hill.

A July 2007 FCC report concluded that sample prototype 'white space' devices did not accurately detect broadcast signals and caused interference to TV broadcasting and wireless microphones. That setback was followed by a February 2008 power failure, in which a Microsoft representative admitted that their prototype device "just stopped working." Last month, another Microsoft device "unexpectedly shut down," according to a Microsoft press release.

To date, 70 lawmakers have expressed concern over the use of unlicensed personal-portable devces in the broadcast spectrum.