APCO

In APCO 10-codes, 10-4 means "Acknowledgment" or "Affirmative."

It is one of the most widely recognized 10-codes and is used to confirm that a message has been received and understood. For example, if a dispatcher gives an instruction or provides information, the responding officer can reply with 10-4 to indicate that the message was received:

In APCO 10-codes, 10-3 means "Stop Transmitting" or "Cease Transmission."

It is used to instruct others to stop communicating temporarily, often because the radio frequency needs to be kept clear for important or emergency traffic. For example, in a situation where critical communication needs to occur without interference, a dispatcher or a commanding officer might issue a 10-3 to stop any non-essential transmissions:

In APCO 10-codes, 10-2 typically means "Signal Good" or "Receiving Well." This is the opposite of 10-1 and is used to indicate that radio communications are clear and strong.

Here’s an example of how it could be used in a communication exchange:

In APCO (Association of Public-Safety Communications Officials) 10-codes, 10-1 typically means "Signal Weak" or "Receiving Poorly". It is used by law enforcement officers or dispatchers to indicate that the radio transmission being received is weak or unclear, making communication difficult.

Here’s how it might be used in a real-world scenario:

In APCO (Association of Public-Safety Communications Officials) 10-codes, which are used primarily by law enforcement and emergency services, the code 10-0 typically means Use Caution or Danger/Caution. It serves as a quick, standardized communication to alert officers or emergency responders that they may be entering a situation that is potentially dangerous, requiring heightened awareness or a cautious approach.

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