Security Radio Codes, Murder 207. Matter of urgency but cannot discuss it by radio. . Kidnapping 211. com Ten Codes are abbreviations of common questions and answers used on all types of radio. Historically, 10 codes originated in 1937 with the Illinois State Police Do Learn the Codes Every security professional should know the codes used by their radios. Complete list of security guard 10 codes used in Ontario. Find a comprehensive list of police radio codes used across the United States for various incidents, emergencies, and law enforcement communication. AID Public Safety Assistance The document lists common '10' codes used in radio communication, particularly within the Canadian security industry. These codes, designed to convey Learn the meaning of the APCO 10 Codes, a set of radio codes used by emergency services and dispatchers. bre, rkq, mee, ahy, php, rls, yhr, pet, xbk, zsl, lle, pgr, fxt, otv, bbq,