The Bush administration, he said, "should be trying to increase the amount of spectrum for unlicensed devices, as opposed to imposing new, retroactive restrictions right as the market is taking off."

These unlicensed wireless devices may operate in the same unlicensed frequency band in the same location.

The only thing left for the Commission to decide is whether portable, unlicensed, do-it-yourself devices will be allowed.

The system will constantly update a database of all TV signals and unlicensed devices.

Now the agency is looking at ways to help streamline its use via unlicensed devices, smart antennas, and femtocells.

The band is also used by industrial, scientific, and medical (ISM) equipment, as well as low powered unlicensed devices.

Amateur stations must accept harmful interference caused by ISM users but may receive protection from unlicensed devices.

The Federal Communications Commission today approved unlicensed wireless devices that operate in the empty "white space" between TV channels.

Intel threatened to sue anyone producing an unlicensed device.

There is currently a movement to allow the operation of personal unlicensed, wideband digital devices in the UHF television spectrum in the United States.