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This table lists codes adopted by the Associated Public Safety
Communications Officers (APCO).
Code Meaning
10-1 Your signal is bad.
10-2 Your signal is good.
10-3 Stop transmitting.
10-4 Message received and understood.
10-5 Relay information to _____.
10-6 I am busy or are you busy?
10-7 Out of service.
10-8 In service.
10-9 Repeat last message.
10-10 Negative (NO).
10-11 _____ in service.
10-12 Stand by.
10-13 Report road/weather conditions.
10-14 Information.
10-15 Message delivered.
10-16 Reply to message.
21-1672.fm Page 30 Thursday, August 5, 1999 12:04 PM