> For the complete documentation index, see [llms.txt](https://docs.cubepilot.org/user-guides/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.cubepilot.org/user-guides/herelink/herelink-user-guides/wireless-communication.md).

# Wireless Communication

## 1. Pairing

* From the "App Launcher" screen, slide down the notification drawer from the top of the screen.

![](/files/kFQP8wI6aVILWKOWUmzv)

* Select Herelink Setting .

![](/files/8GZWj5pVrGGEbqorjRJc)

* Click Pair button and then hold the Pair/Reset button on Air Unit until LED2 blinks.

![](/files/137woQlM4qXf5XnGdSFY)

![](/files/ZspLnqnVO3fmfw2c83mX)

![](/files/aJ4z468XfbiUcVC1hysl)

## 2. **Selecting FCC/CE settings**

Select the region you are residing in or matches closest to your locations policy from Country Under Herelink Settings" main screen.

![](/files/Lt8ql0dx90UwnihfEg3J)

## 3. Frequency setting

Click **FREQUENCY** in Herelink Settings screen to adjust frequency range.

![](/files/Qp9j9jtzPl3eE9IHdW5d)

* Freq （Fixed frequency selection, used to set frequency manually）
* DL BW

  （Downlink bandwidth: select DL\_10M / DL\_20M for less interference, 20M for long diatance control. 1.4M is preferred in multiple interference scenarios）
* Uplink bandwidth: select UL\_1.4M / UL\_10M / UL\_20M for less interference, 20M for long diatance control. 1.4M is preferred in multiple interference scenarios
* Hopping

  （downlink signal hopping switch, You are advised to enable this mode to automatically select the best working frequency）
* Tx Ant （Antenna select）
* PAIR （Pair buttom）
* GET STATE （upload setting）
* FREQ SCAN （Scan the current optimal frequency）