A recently published theory has suggested that a cloak of invisibility is in principle possible, at least over a narrow frequency band. We describe here the first practical realization of such a cloak ...

Researchers have proposed the first design of a cloaking device that uses an external source of energy to significantly broaden its bandwidth of operation. Researchers at The University of Texas at ...

Invisible cloaking is one of the major outcomes of the metamaterial research, but the practical potential, in particular for high frequencies (for example, microwave to visible light), is fatally ...

Radio-frequency scanners, like the Uniden Bearcat Scanner, check for active radio communications in your immediate area. They're commonly purchased by hobbyists, but they also have many business ...

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. Army ...

FORT JACKSON, S.C. -- Some people using garage door openers near Fort Jackson may experience problems with their remotes as local military radio systems are scheduled to transition to a new frequency ...

The United States Frequency Allocation Chart shows how the nation’s precious radio frequencies are carefully shared. Somewhere above you right now, a plane is broadcasting its coordinates on 1090 ...