![Appendix C Ten-Code Signals for CB Radio - Ham and Shortwave Radio for the Electronics Hobbyist [Book] Appendix C Ten-Code Signals for CB Radio - Ham and Shortwave Radio for the Electronics Hobbyist [Book]](https://www.oreilly.com/api/v2/epubs/9780071832922/files/t0277-01.jpg)
Appendix C Ten-Code Signals for CB Radio - Ham and Shortwave Radio for the Electronics Hobbyist [Book]
Do police officers use codes on their walkie talkies? If not, why don't they just say 'I need backup at this location'? Or does this happen sometimes without being coded as such? -
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