# Long Range Telemetry (LRT)

## Long Range Telemetry (LRT) System 

{% tabs %}
{% tab title="Included in LRT System" %}

* IF1200A Aircraft
* Jeti DS-12 Hand Controller
* RFD900x-US Telemetry Radio
  {% endtab %}

{% tab title="Customer Supplied" %}

* Laptop or tablet, with QGroundControl and/or Mission Planner installed. 

{% hint style="info" %}
The RFD900x-US telemetry radio plugs into a USB port on this device.
{% endhint %}
{% endtab %}
{% endtabs %}

## LRT Operations

The device operates as a ground control station (GCS).

{% hint style="warning" %}
IMPORTANT! MAVLink compatible Ground Control station software such as QGroundControl (QGC), Mission Planner (MP), UGCS, or MAVProxy must be installed on the device (GCS) before flying.
{% endhint %}

{% hint style="info" %}
NOTE:  QGC and MP are open source software utilities that can be downloaded from the developers’ individual websites.  Both are well documented and first time users are encouraged to review the available user’s guides.  Links are provided below for both QGC and MP.
{% endhint %}

**QGC Download:** <http://qgroundcontrol.com/>

**QGC User’s Guide:**  <https://docs.qgroundcontrol.com/en/>

**MP Download:** <https://ardupilot.org/planner/docs/mission-planner-installation.html>

**MP User’s Guide:** <https://ardupilot.org/planner/docs/mission-planner-installation.html>

<figure><img src="https://lh4.googleusercontent.com/XpcSVsIKDEiJZfgNpkUEO8T-6oFkUN2QzKe3HMlzQZMRADRggiEaIxcAiuyefNkKtMA2qM1xu20OI4PbWxKXwK7jgKVhRFGNYuxLO1cyBS0OZ_AOTzFiLmQtfvw10WmOv1GS_wGVSwnLDML3JDEcbSgZynSjJnzj_INHGX5e_DvfZ4K1s6nNqzQtlBXuxw" alt=""><figcaption></figcaption></figure>

### Flight Mode Switch Settings on Jeti DS-12

The Flight Mode Switch in the upper-right corner of the Jeti DS-12 (*Fig. 2* above) is a **three-position switch** that selects between the following flight modes:

| Switch Position | Flight Mode            |
| --------------- | ---------------------- |
| Upper           | Loiter                 |
| Middle          | Position Hold          |
| Lower           | RTL (Return to Launch) |


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