Police scanner
A police scanner is a receiver that scans VHF (very high frequency) frequencies used by police to listen to their 2-way radio transmissions. This scanning is performed using several devices, including 2-way radios and specialized devices for scanning 2-way radio frequencies. Most smartphones have apps for listening to police, fire, and ambulance service calls. The scanner runs through the different frequencies, and when it finds a conversation, it tunes to that frequency for listening. Some scanners can listen to and play multiple frequencies at once.
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.