The most famous emergency codes originated with the Association of Public-Safety Communications Officials (APCO). These "10-codes" are used by police, fire, and EMS HQs to talk to units in the field.
Originating in the 1930s with the Association of Public-Safety Communications Officials (APCO), Ten-Codes are the grandfather of emergency communication. While their use is declining in favor of plain language (due to NIMS compliance), many HQs still use them. emergency hq codes work
: Tap the gear icon (Settings) usually located in the top-right corner or within a side menu. The most famous emergency codes originated with the