The demand for mobile telephone service has led to large blocks of radio spectrum allocated to cellular frequencies.

Using voiceprints of the known voices, they established an algorithm to recognize those voices, whichever cellular frequency they used.

The company's president, Michael Gray, has created software to communicate with all tracking devices and cellular frequencies.

These radio, television and cellular frequencies have been given away by lottery or after hearings, and the Government has collected only nominal charges for administrative fees.

Ericsson is testing personal networks at cellular frequencies but plans to manufacture systems for the higher frequency.

Pacific Telesis, one of the seven regional Bell operating companies, is exploring ways to use coded transmissions at current cellular frequencies.

Both WiFi and cellular frequencies belong on the ultra-high-frequency level of the radio frequency spectrum.

It assigns three conversations to each cellular frequency, instead of one, which is the case for analog transmission.

A clever enemy who might have tracked the message through the cellular frequencies would probably have deemed him just another cutout.

There were over five hundred cellular frequencies, and the gear to cover them all was not part of Rainbow's regular kit.