"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." But the primary purpose of any decent detector is to sniff out various types of police radar—X, K, and Ka ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Radar speed-detection capabilities were first developed in 1935 by a Bobby in Britain who had his eyes ...

Radar speed-detection capabilities were first developed in 1935 by a Bobby in Britain who had his eyes set on your wallet. Some 30 years on, a fed-up comrade and engineer invented one of the earliest ...