Police scanner
A police scanner is a receiver that scans VHF (Very High Frequency) frequencies police use to listen to their 2-way radio transmissions. This scanning uses several devices, including 2-way radios and specialized devices for scanning 2-way radio frequencies. The scanner runs through the different frequencies, and when it finds a conversation, it tunes to that frequency for listening. Some scanners can also listen to and play multiple frequencies at once.
Police scanner apps and websites
People have also connected scanners to computers, allowing them to be listened to by others through an app or website. Most smartphones have apps for listening to police, fire, and ambulance service calls. These apps are available in the app store.
To listen to scanners through the Internet, there are also websites available to listen to police scanners around the world. For example, Broadcastify has thousands of public safety, aircraft, rail, and marine streams.
Is it legal to use a police scanner?
Yes, it is legal to own and use a police scanner in the United States, but only if not used while committing a crime. Some states, including Florida and New York, restrict police scanner use while driving. If you plan to use a police scanner while driving, check your state's laws to determine if there are any restrictions.