Police radio codes can vary by jurisdiction, but some commonly used codes include:
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10-4: Acknowledgment or "message received."
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10-20: Location or "what's your location?"
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10-9: Repeat or "please repeat the message."
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10-99: Wanted/stolen indicated.
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10-7: Out of service.
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10-8: In service.
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10-3: Stop transmitting.
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10-1: Unable to copy, change location.
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10-5: Relay (to) or "repeat to another unit."
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10-13: Weather/road conditions.
Always check local protocols, as codes can differ significantly.
