> For the complete documentation index, see [llms.txt](https://docs.holybro.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.holybro.com/gps-and-rtk-system/h-rtk-mosaic-g5/quick-start-guide.md).

# Quick Start Guide

## Basic Setup

{% hint style="info" %}
Ardupilot & PX4 setup process is identical to the H-RTK mosaic-H. The only difference is that mosaic-G5 currently cannot operate as a base unit.
{% endhint %}

{% content-ref url="/pages/YOHs8uzlO9LFl9uoCXlR" %}
[Setup & Getting Started (Ardupilot)](/gps-and-rtk-system/h-rtk-mosaic-h/setup-and-getting-started-ardupilot.md)
{% endcontent-ref %}

{% content-ref url="/pages/FpdWXIEKGh2j5NsXR8yi" %}
[Setup & Getting Started (PX4)](/gps-and-rtk-system/h-rtk-mosaic-h/setup-and-getting-started-px4.md)
{% endcontent-ref %}

## Enable UART2 (COM2)

H-RTK mosaic-G5 by default has UART2 (COM2) disabled, and PX4/Ardupilot auto configuration does not enable UART2 by default.

To enable UART2 output, first download and install the latest Septentrio RXTool from the URL below:

{% embed url="<https://www.septentrio.com/en/products/gps-gnss-receiver-software/rxtools>" %}

Open RxControl software and establish a connection with mosaic-G5 via USB.&#x20;

<figure><img src="/files/gpOei1VnXkglIKkCTyWw" alt=""><figcaption></figcaption></figure>

Once the connection is established, navigate to Communication->Output Settings->SBF Output and configure the data stream similar to the screenshot below. Ensure you set Stream1 as COM1 (you can leave SBF messages unchecked for COM1), leave Stream2 as default (Ardupilot auto-config will change Stream2 to DSK1), and check the support section for COM2 (clicking Support will auto-enable essential messages).

Don't forget to set the data interval to the desired value. (100 msec = 10Hz)

<figure><img src="/files/k47FmIe1q1m6chmu5FML" alt=""><figcaption></figcaption></figure>

Click Apply and OK to save the configuration as current.

To save the current configuration as boot configuration, navigate to File->Copy Configuration, and select current as source, boot as target. Click apply and ok to save.


---

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