Hong Kong police promise clearer signals during Xi visit after anti-terror technology jams air traffic radio channels | South China Morning Post
![Appendix D Ten-Code Signals for Police and Emergency Personnel - Ham and Shortwave Radio for the Electronics Hobbyist [Book] Appendix D Ten-Code Signals for Police and Emergency Personnel - Ham and Shortwave Radio for the Electronics Hobbyist [Book]](https://www.oreilly.com/library/view/ham-and-shortwave/9780071832922/t0285-01.jpg)
Appendix D Ten-Code Signals for Police and Emergency Personnel - Ham and Shortwave Radio for the Electronics Hobbyist [Book]
What do codes that police officers use mean? For example, they use 10-4, 1033, 487, and stuff like that. - Quora
![J Huff Twitter पर: "Site for police radio codes: https://t.co/fOyjHzYxEs (select state or region with dropdown) Helpful for #OSINT on realtime events when listening to a region on @Broadcastify https://t.co/2DmnHReTCz" / Twitter J Huff Twitter पर: "Site for police radio codes: https://t.co/fOyjHzYxEs (select state or region with dropdown) Helpful for #OSINT on realtime events when listening to a region on @Broadcastify https://t.co/2DmnHReTCz" / Twitter](https://pbs.twimg.com/media/DfBEMeCWAAAGNRg.jpg)