---
name: "radioChannelSetCallSign"
type: command
status: ok
groups: ["Radio and Chat", "Custom Radio and Chat"]
arma3_since: "0.50"
locality: {"argument": "global", "effect": "global", "server_exec": false}
source: https://community.bistudio.com/wiki/radioChannelSetCallSign
revid: 378308
updated: 2026-04-01T22:46:59Z
---

# radioChannelSetCallSign

*Command · Radio and Chat, Custom Radio and Chat · Arma 3 v0.50 · introduced in Take On Helicopters v1.00*

Locality: arguments **global** · effect **global**

## Description

Set the custom radio chat channel's callsign / VoN callsign.

## Syntax

```sqf
customChannelID radioChannelSetCallSign callSign
```

**Parameters:**

- `customChannelID`: [Number](../topics/Number.md) - custom channel ID returned by [radioChannelCreate](../commands/radioChannelCreate.md) command
- `callSign`: [String](../topics/String.md) or Arma 3 v2.22 [Array](../topics/Array.md) - custom chat callsign or [callSign, callSignVoN]. Available parameters:

  | Parameter | Description | Example |
  |---|---|---|
  | `%$KEY` | Reference a localised text | "%$STR_Q_North" → "North" |
  | `%CHANNEL_LABEL` | The channel's label - see [radioChannelSetLabel](../commands/radioChannelSetLabel.md) | "Q-dance Radio" |
  | `%UNIT_SIDE` | Side's name, similar to [sideRadio](../commands/sideRadio.md) | "BLUFOR" |
  | `%UNIT_NAME` | The ***player***'s or AI's name - see [name](../commands/name.md) | "John Doe" |
  | `%UNIT_RANK` | A shorthand version of the unit's rank | "Sgt" |
  | `%UNIT_ID` | The unit's id in the group | "1" |
  | `%UNIT_REF` | The unit's log reference | "Unit123456" |
  | `%UNIT_GRP_NAME` | The group's name - see [setGroupId](../commands/setGroupId.md) | "Alpha 1-1" |
  | `%UNIT_GRP_LEADER` | Group leader mention (if the unit is its group's leader) | ", group leader" |
  | `%UNIT_VEH_NAME` | Display name of the unit's vehicle | "Hunter" |
  | `%UNIT_VEH_POSITION` | Unit's vehicle position, similar to [vehicleRadio](../commands/vehicleRadio.md) | "Gunner" |
  | `%%` | To display a normal percentage sign | N/A |

**Returns:** [Nothing](../topics/Nothing.md)

## Examples

### Example 1

```sqf
4 radioChannelSetCallSign "(%UNIT_ID) %UNIT_RANK %UNIT_NAME%UNIT_GRP_LEADER"; // (1) Sgt Ben Kelly, group leader
```

### Example 2

```sqf
4 radioChannelSetCallSign ["%UNIT_VEH_POSITION, %UNIT_VEH_NAME", "%UNIT_NAME%UNIT_GRP_LEADER"];
```

## See also

[radioChannelAdd](../commands/radioChannelAdd.md) · [radioChannelCreate](../commands/radioChannelCreate.md) · [radioChannelRemove](../commands/radioChannelRemove.md) · [radioChannelSetLabel](../commands/radioChannelSetLabel.md)

<sub>Source: [BI Community Wiki — radioChannelSetCallSign](https://community.bistudio.com/wiki/radioChannelSetCallSign) (revision 378308).</sub>