radio frequency

But in northern England and Scotland, meters instead rely on radio frequencies and no such fix is available.

Adding to the chaos, the Secret Service and local law enforcement were apparently communicating on different radio frequencies throughout the event.

He said the use of different radio frequencies by police and Secret Service meant Trump’s protection team were unaware a suspicious person had been identified at the Butler, Pennsylvania, rally.

Quantifying these effects is crucial to controlling the radio frequency heating of the plasma so that researchers can ensure the waves move efficiently through the plasma to heat it in the right areas.

Each feeder has a gate with a radio frequency reader that can detect a tag researchers put on chickadees.