All police communication codes in IL
10-0: Caution
10-1: Reception poor
Used to indicate that a unit cannot copy a message and to change location or channel.
10-2: Receiving Well
Used to confirm that a radio transmission is being received clearly and intelligibly.
10-3: Stop Transmitting
10-4: Message Received
Used to acknowledge that a message or transmission was received and understood.
10-5: Repay message
10-6: Change channel
10-9: Repeat message
10-11: Identify Frequency
10-21: Telephone
10-21A: Advise home I will return at:
10-24: Request car-to-car transmit
10-25: Do you have contact with:
10-36: Confidential Information
10-39: Can unit come to the radio?
10-40: Is unit available for phone call?
10-63: Prepare to copy
10-68: Telephone for police
10-73: How do you receive?
10-86: Any radio traffic?
11-58: Radio monitored, use phone