> For the complete documentation index, see [llms.txt](https://lama-dev.gitbook.io/ecrp/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://lama-dev.gitbook.io/ecrp/leo-policies/radio-communication.md).

# Radio Communication

### Radio Setup

Typing `/radio` in the chat will open the radio interface on the bottom-right corner of your screen. To begin talking on the radio, first you need to select a radio frequency. Click on the "**Connect**" button with a telephone icon, then type in the appropriate frequency based on the table below and press the arrow icon to enter the frequency.

| Description                                          | Frequency                                |
| ---------------------------------------------------- | ---------------------------------------- |
| <mark style="color:blue;">Downtown Main</mark>       | <mark style="color:blue;">101.1</mark>   |
| <mark style="color:green;">South Central Main</mark> | <mark style="color:green;">202.1</mark>  |
| <mark style="color:red;">East LA Main</mark>         | <mark style="color:red;">303.1</mark>    |
| <mark style="color:purple;">Hollywood Main</mark>    | <mark style="color:purple;">404.1</mark> |
| <mark style="color:yellow;">Venice Main</mark>       | <mark style="color:yellow;">505.1</mark> |
| LAX Main                                             | 606.1                                    |

{% hint style="info" %}
The frequency is based on your current [operating area](/ecrp/leo-policies/unit-numbering.md#operating-areas), and it is generally announced by the Watch Commander at the start of every shift.
{% endhint %}

The image below shows all the radio controls. Additionally, the radio display offers more options, such as saving favorite frequencies, chatting with other officers, and various settings.

<div align="center"><figure><img src="/files/X4kMMVL7VLcwYJWtSsNr" alt="" width="375"><figcaption><p>Radio controls</p></figcaption></figure></div>

When using the radio, make sure to set the correct [callsign](/ecrp/leo-policies/unit-numbering.md). To do so, open the settings page in the radio interface, then scroll to the bottom until you see "Callsign." Update it with your current callsign.

<figure><img src="/files/DPyozBptNHbPLyddOQIN" alt=""><figcaption><p>Updating your callsign in the radio interface</p></figcaption></figure>

### Radio Etiquette

Maintaining professional and effective radio communication requires adhering to proper etiquette. Here are some guidelines to follow:

* **Use the correct frequency**: Ensure you are transmitting on the correct frequency designated for your specific communication needs.&#x20;
* **Wait for a clear channel**: Before transmitting, ensure the channel is clear, allowing others to complete their messages. Avoid interrupting ongoing conversations unless it's an emergency or requires immediate attention.
* **Identify yourself**: Start each radio transmission by identifying yourself with your [callsign](/ecrp/leo-policies/unit-numbering.md). This allows others to know who is speaking and helps maintain accountability.
* **Speak clearly and concisely**: Enunciate your words clearly, ensuring they are understandable to the receiving party. Use concise messages to relay essential information, avoiding unnecessary chatter that can clutter the radio frequency.

### General Codes

These codes enable officers to convey important information without having to rely on lengthy explanations, thus saving time and reducing the risk of miscommunication.&#x20;

| Code   | Description                 |
| ------ | --------------------------- |
| Code 0 | Game Crash                  |
| Code 1 | No Lights, No Siren         |
| Code 2 | Lights, Siren if needed     |
| Code 3 | Lights and Siren            |
| Code 4 | Under Control / Clear       |
| Code 5 | Felony / High Risk Stop     |
| Code 6 | Investigating / In the Area |

### 10 Codes

The 10 Codes listed are standardized shortcodes used in radio communication to convey specific messages quickly and efficiently. These codes help reduce the length of voice transmissions, minimize misunderstandings, and ensure clarity during critical situations.&#x20;

<table><thead><tr><th width="102">Code</th><th>Description</th></tr></thead><tbody><tr><td>10-0</td><td>Lost Visual</td></tr><tr><td>10-1</td><td>Receiving Poorly</td></tr><tr><td>10-2</td><td>Receiving Well (Loud &#x26; Clear)</td></tr><tr><td>10-3</td><td>Stop Transmitting</td></tr><tr><td><mark style="color:green;"><strong>10-4</strong></mark></td><td><mark style="color:green;"><strong>Acknowledged</strong></mark></td></tr><tr><td>10-6</td><td>Busy</td></tr><tr><td>10-7</td><td>Out of Service</td></tr><tr><td><mark style="color:green;"><strong>10-8</strong></mark></td><td><mark style="color:green;"><strong>In Service</strong></mark></td></tr><tr><td><mark style="color:green;"><strong>10-9</strong></mark></td><td><mark style="color:green;"><strong>Repeat</strong></mark></td></tr><tr><td>10-10</td><td>Fight In Progress</td></tr><tr><td><mark style="color:green;"><strong>10-11</strong></mark></td><td><mark style="color:green;"><strong>Traffic Stop</strong></mark></td></tr><tr><td>10-12</td><td>Active Ride Along</td></tr><tr><td>10-13</td><td>Shots Fired</td></tr><tr><td><mark style="color:green;"><strong>10-15</strong></mark></td><td><mark style="color:green;"><strong>Subject in Custody</strong></mark></td></tr><tr><td><mark style="color:green;"><strong>10-20</strong></mark></td><td><mark style="color:green;"><strong>Location</strong></mark></td></tr><tr><td><mark style="color:green;"><strong>10-22</strong></mark></td><td><mark style="color:green;"><strong>Disregard</strong></mark></td></tr><tr><td><mark style="color:green;"><strong>10-23</strong></mark></td><td><mark style="color:green;"><strong>Arrived on Scene</strong></mark></td></tr><tr><td>10-27</td><td>Drivers License Check</td></tr><tr><td>10-28</td><td>Vehicle License Plate Check</td></tr><tr><td><mark style="color:green;"><strong>10-32</strong></mark></td><td><mark style="color:green;"><strong>Request Backup (Code 1-2-3)</strong></mark></td></tr><tr><td>10-41</td><td>Beginning Tour of Duty</td></tr><tr><td>10-42</td><td>Ending Tour of Duty</td></tr><tr><td>10-44</td><td>Person Deceased</td></tr><tr><td><mark style="color:green;"><strong>10-50</strong></mark></td><td><mark style="color:green;"><strong>Vehicle Accident</strong></mark></td></tr><tr><td>10-51</td><td>Request Towing Service</td></tr><tr><td>10-52</td><td>Request Fire/EMS</td></tr><tr><td>10-60</td><td>Armed with a Gun</td></tr><tr><td><mark style="color:green;"><strong>10-70</strong></mark></td><td><mark style="color:green;"><strong>Foot Pursuit</strong></mark></td></tr><tr><td>10-71</td><td>Supervisor</td></tr><tr><td><mark style="color:green;"><strong>10-80</strong></mark></td><td><mark style="color:green;"><strong>Vehicle Pursuit</strong></mark></td></tr><tr><td><mark style="color:green;"><strong>10-97</strong></mark></td><td><mark style="color:green;"><strong>En Route (Code 1-2-3)</strong></mark></td></tr><tr><td><mark style="color:green;"><strong>10-98</strong></mark></td><td><mark style="color:green;"><strong>Officer Needs Help</strong></mark></td></tr><tr><td><mark style="color:green;"><strong>10-99</strong></mark></td><td><mark style="color:green;"><strong>Officer Down All Units Respond</strong></mark></td></tr></tbody></table>

### Phonetic Alphabet

The phonetic alphabet helps ensure clarity and avoids misunderstandings when transmitting letters over the radio, especially in noisy or high-stress situations. By substituting letters with corresponding code words, communication becomes more precise and effective.

<table><thead><tr><th width="112" align="center">Letter</th><th width="215">Description</th><th width="95" align="center">Letter</th><th>Description</th></tr></thead><tbody><tr><td align="center">A</td><td>Adam</td><td align="center">N</td><td>Nora</td></tr><tr><td align="center">B</td><td>Boy</td><td align="center">O</td><td>Ocean</td></tr><tr><td align="center">C</td><td>Charles</td><td align="center">P</td><td>Paul</td></tr><tr><td align="center">D</td><td>David</td><td align="center">Q</td><td>Queen</td></tr><tr><td align="center">E</td><td>Edward</td><td align="center">R</td><td>Robert</td></tr><tr><td align="center">F</td><td>Frank</td><td align="center">S</td><td>Sam</td></tr><tr><td align="center">G</td><td>George</td><td align="center">T</td><td>Tom</td></tr><tr><td align="center">H</td><td>Henry</td><td align="center">U</td><td>Union</td></tr><tr><td align="center">I</td><td>Ida</td><td align="center">V</td><td>Victor</td></tr><tr><td align="center">J</td><td>John</td><td align="center">W</td><td>William</td></tr><tr><td align="center">K</td><td>King</td><td align="center">X</td><td>X-ray</td></tr><tr><td align="center">L</td><td>Lincoln</td><td align="center">Y</td><td>Young</td></tr><tr><td align="center">M</td><td>Mary</td><td align="center">Z</td><td>Zebra</td></tr></tbody></table>


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