> For the complete documentation index, see [llms.txt](https://docs.freeflysystems.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.freeflysystems.com/ecosystem/controller/pilot-pro/operating-handbook/radio-modules/herelink-radio.md).

# Herelink Radio

## Binding

* Prepare tweezers or paperclip.

{% tabs %}
{% tab title="Astro and Alta X Gen 2" %}

* Power on Astro or Alta X Gen 2 with one battery

* Find the bind button on the IO Panel - next to the yellow XT connector.

  <figure><img src="/files/WI9wvyQCnc4qECJGKc2v" alt="" width="375"><figcaption></figcaption></figure>

* Also locate the external compass module

  <figure><img src="/files/G0GkVun7R03ImCJSdDM9" alt="" width="375"><figcaption></figcaption></figure>

* Press on the bind button 3 times. The LED on the external compass module starts to blink fast in white/pink for a few moments, confirming that it is entering binding mode.&#x20;

<figure><img src="/files/psCpCfOvS9vSqOozpbDk" alt="" width="375"><figcaption></figcaption></figure>
{% endtab %}

{% tab title="Alta X Gen 1" %}

* Using tweezers, press and hold the Herelink unit's "Pair/Reset" button until LED2 blinks (hold approximately 3 seconds)
  {% endtab %}
  {% endtabs %}

## Pilot Pro

* Using tweezers, press and hold the Pilot Pro Herelink unit's "Pair/Reset" button until LED2 blinks (hold approximately 3 seconds)<br>

  <figure><img src="/files/mxHMGVsT2NYw63g4EHDY" alt="" width="375"><figcaption></figcaption></figure>
* Ensure the light goes solid.
* Open the flight app on Pilot Pro (AMC for Astro) and verify the connection to the aircraft


---

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