If you've been listening to your trusty old police scanner, you may be missing something: half the action. Douglas County in Minnesota has started broadcasting on a new digital frequency and some ...

LYNCHBURG, Va. (WSET) -- If you have a police scanner and haven't reprogrammed it, it will no longer work. Over the weekend, public safety agencies went from analog to digital frequencies. That means ...

Basic operation of mmWave imaging. Key components of mmWave imaging: transmitter, receiver, multichannel ADC. How to build a setup for security scanning systems and similar applications.

Police scanner apps allow you to listen to radio feeds, whether you're a hobbyist interested in police communications or want to learn about local police and crime in your neighborhood. Zeroing in on ...