09.22.2006 08:00 AM
Unlicensed devices would cause interference for TV receivers, according to MSTV

MSTV on Tuesday made public a comprehensive analysis of the interference problems associated with placing unlicensed devices in the TV White Spaces.

According to the Association for Maximum Service Television, the report refutes noninterference claims by unlicensed device proponents.

The report “responds to the unsubstantiated claims” from proponents of unlicensed that such devices won’t cause interference if used in the TV band, said Bruce Franca, MSTV vice president of policy and technology.

“The New America Foundation and other proponents simply ignore the complex engineering and technical issues associated with placing these devices in the television band,” said Franca, who also is a former chief of the FCC’s Office of Engineering and Technology.

The report documents “problems with interference from out-of-band emissions, interference from operating on the first adjacent channel, and a significant potential for co-channel interference,” said MSTV senior vice president Victor Tawil.

The newly issued document shows “there is a tremendous risk of interference to new DTV receivers and government subsidized converter boxes,” said association president David Donovan.

“Proponents of unlicensed devices have relied on rhetoric, not research, to make their claims,” he said. “By focusing on science and sound engineering, this report raises serious questions about placing unlicensed devices in the television band.”

To read the report, visit: www.mstv.org/docs/NAFrebuttal.pdf.

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