Ten Codes

Ten Codes are shorthand radio signals used by emergency services like police and fire departments to communicate efficiently. Each code represents a specific message or status, allowing for quick and clear communication over radio channels. For example, "10-4" means "acknowledged," while "10-20" refers to a location. These codes help reduce radio chatter, prevent misunderstandings, and expedite responses during emergencies. Though widely used in the past, many agencies now supplement or replace Ten Codes with plain language to improve clarity and safety across various situations.