Many bats improve their sound picture by using different frequencies.

The system used low frequencies from 70 to 129 kHz.

Regional systems are cheaper and can carry more message traffic because they use different frequencies.

It is easier to illustrate this if we use frequency instead of wavelength.

"Other than the fact that we use subspace frequencies for communications," he noted.

The chips for the two satellite companies will be different because the systems use different frequencies.

They used frequency, quantity, and average daily volume to measure the alcohol consumption.

Perhaps the Americans had taken another technological leap of faith and were using frequencies that this device could not receive.

The gift will come in the form of free licenses to use newly available frequencies to broadcast digital television programs and services.

The resulting audio quality can be affected by a number of things, including how many nearby radio stations are using available frequencies.