What Is a 11-58 Police Code? 11-58 Police Code

The 11-58 police code meaning for the police forces is Radio Monitored Use Phone.

If you’ve ever asked yourself, what is 11-58 Police Code, you’re not alone. The 11-58 Police Code is one of the many vital codes used by law enforcement and emergency responders across the United States to ensure clear, fast, and secure communication. Specifically, 11-58 means “Radio Monitored – Use Phone.” This code instructs officers to avoid radio transmissions for sensitive or monitored discussions and instead switch to a phone call for privacy and security.

The phrase “Radio Monitored – Use Phone” is crucial in situations where radio communication may be compromised, intercepted, or inappropriate due to confidentiality. When an officer hears or uses 11-58, it signals that the information should be relayed through a more secure line – typically a department-issued or personal phone – to avoid potential breaches or miscommunication.

Why the 11-58 Police Code Is Important

Police codes like 11-58 are part of a larger set of standardized signals used by law enforcement to keep communication concise, fast, and accurate. In high-pressure situations, relaying a single number such as “11-58” saves precious seconds and minimizes the risk of misunderstanding. Instead of spelling out, “Please use a phone instead of the radio – the channel might be monitored,” a quick 11-58 gets the point across instantly.

Whether during sensitive investigations, undercover operations, or strategic coordination, the 11-58 Police Code plays a critical role in helping officers maintain discretion and safety. It’s part of what makes police communication systems effective and reliable in the field.

Police Code 11-58 Meaning and Usage

What is 11-58 Police Code? It is the designated code for Radio Monitored – Use Phone. Officers might use it when they suspect their radio channels are being monitored by unauthorized individuals, or simply when the nature of the message requires a higher level of privacy.

The 11-58 Police Code is part of the broader set of “11-series” codes, commonly adopted by police departments throughout California and other jurisdictions. These codes originated to streamline law enforcement communication, and many remain actively in use today through dispatch systems and code scanners.

Understanding Police Radio Communication: The Role of Code 11-58

In radio-monitored environments or potentially hostile situations, using the 11-58 Police Code is a tactical move. It avoids alerting nearby individuals who might be listening in on public radio frequencies. By switching to a phone, officers gain the ability to speak freely and safely.

This simple but powerful code helps protect sensitive information, officer locations, tactical plans, and the safety of civilians. It’s a smart precaution when discretion can mean the difference between a safe outcome and a compromised mission.

11-58 Police Code – Why It Matters

So, the next time you hear someone ask, “what is 11-58 police code?”, you’ll know it stands for Radio Monitored – Use Phone, a critical part of law enforcement communication strategy. Understanding codes like 11-58 not only deepens your appreciation for how organized and efficient emergency communication must be, but also provides insight into how officers maintain safety and control across complex and evolving situations.

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Everything You Need to Know About the 11-58 Police Code – Radio Monitored Use Phone

Welcome to All Police Codes, your complete and trusted source for decoding law enforcement radio signals. If you’re here to understand the 11-58 Police Code, you’re in the right place. This code, which means Radio Monitored Use Phone, plays a critical role in enhancing law enforcement communication across the United States. Alongside the 11-58 code, our platform provides you with a fully detailed Police Code Lookup guide, helping you explore and understand every police signal used across various jurisdictions nationwide.

Our dedicated team has spent years studying and researching police radio codes, emergency signal systems, and APCO Ten Codes to bring you accurate, reliable, and up-to-date information. Whether you’re a student of criminal justice, a police scanner enthusiast, or simply curious about the meaning of 11-58 Police Code, we aim to be your go-to educational hub.

What Does 11-58 Police Code Mean?

The 11-58 Police Code refers to “Radio Monitored Use Phone.” It’s a short, standardized message used by officers to indicate that communication should be conducted via phone due to radio monitoring or security concerns. Instead of relaying sensitive or potentially compromising details over the radio, which might be monitored by unauthorized individuals or the public, law enforcement officers use the 11-58 signal to prompt a switch to a more secure phone conversation.

Using concise codes like 11-58 helps prevent miscommunication, eliminates lengthy verbal explanations, and maintains operational efficiency—especially during high-pressure or time-sensitive situations. These codes are part of a broader system designed to keep communication clear, fast, and secure among emergency responders.

Why Police Codes Like 11-58 Matter

Police codes have been in use since the late 1930s. Initially proposed in The APCO Bulletin in June 1935, the earliest versions were adapted from U.S. Navy Morse code procedure symbols. These systems were further standardized between 1937 and 1940 and saw major expansion in 1974 by the Association of Public-Safety Communications Officials-International (APCO), which created the now widely used APCO Ten Codes.

The development of police codes, including 11-58, was driven by the need for efficient radio communication, especially during emergencies. Today, these codes are essential for public safety operations across the country, forming a shared language between dispatchers, patrol officers, and first responders.

Explore More Than Just the 11-58 Code

While the 11-58 police signal is essential, it’s just one of many codes used daily by emergency personnel. There are dozens of similar codes in the 11-code series, including 11-55 (Officer Being Followed by Auto) and 11-46 (Death Report), each serving a specific and vital purpose.

You can explore all of these codes right here on our site. Plus, if you’re into police scanners, you can actually listen in on how codes like 11-58 are used in real-time, depending on your state’s radio communication laws.

Free Police Code Resource—Why We Do It

All information about the 11-58 Police Code and every other code listed on our website is completely free. We do this because we are passionate about law enforcement communication systems and deeply appreciate the work of emergency service providers who risk their lives to keep us safe.

To keep our website running and cover operational costs, we display advertising. But rest assured, our mission is purely educational—we’re here to inform, not to sell.

The Legacy of Police Codes

From their Morse code roots to their modern voice applications, police codes like 11-58 have transformed how first responders interact in the field. These radio codes reduce confusion, improve response time, and allow officers to maintain clarity and confidentiality in critical scenarios.

Whether you’re looking to understand the meaning of 11-58 Police Code, researching APCO codes, or diving deep into police communications history, our site is your ultimate resource.

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