The United States Frequency Allocation Chart shows how the nation’s precious radio frequencies are carefully shared.

WASHINGTON — In the past, intelligence analysts have only had access to classified government satellite data when assessing radio frequency use all over the world. Now, a pilot program with HawkEye ...

Learn about calculating the mean, mode and range from a frequency table with this BBC Bitesize Maths article. For students between the ages of 11 and 14.

A new quantum sensor can analyze the full spectrum of radio frequency and real-world signals, unleashing new potentials for soldier communications, spectrum awareness and electronic warfare.