The major technical differences between the two systems have to do with the way each technology shares space on the radio spectrum.

Previously, only two services had been allowed in each city because the available radio spectrum could handle no more.

"My communications officer says they have quite a presence on the radio spectrum."

Two other small companies offering similar services use different slices of the radio spectrum.

The protocol works in the 2.4-gigahertz part of the radio spectrum.

Maybe they shouldn't be searching the radio spectrum at all.

The radio spectrum has become a central means of communication, bringing with it money and power.

The radio spectrum is a natural and hence a public resource.

I can tell for sure 'cause they've got little individual signatures in the radio spectrum, if you look close.

As for needing more radio spectrum, there's an easy way to do that.