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Want to listen to Chicago police scanners? Here's how to tune into live Chicago police, fire, and EMS radio feeds from your phone — no equipment needed.

If you've ever listened to a police scanner and heard "10-4" or "10-20," you've heard police 10-codes in action. Here's what they mean — and why they're slowly disappearing.

A hurricane is closing in. A wildfire is spreading toward your town. In those moments, the information you have — and how quickly you get it — matters.

A police scanner lets you listen to live radio communications from police, fire, and EMS as they respond to incidents in real time.