> For the complete documentation index, see [llms.txt](https://docs.rtkdata.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.rtkdata.com/integration-hub/ntrip-clients-and-field-software/mission-planner.md).

# Mission Planner NTRIP Setup: ArduPilot RTK

**Mission Planner** is the ground control station for ArduPilot-based drones and rovers. Its built-in NTRIP client streams RTK corrections from a caster like RTKdata.com to the vehicle over the telemetry link, so any ArduPilot aircraft with an RTK-capable GNSS (e.g. u-blox F9P) can reach centimeter-level accuracy. One setup covers every ArduPilot vehicle.

## Requirements

* **Mission Planner** (current version) on a Windows ground station
* ArduPilot vehicle with an **RTK-capable GNSS receiver**
* Telemetry link between Mission Planner and the vehicle
* Internet on the ground station
* Active RTKdata.com account with RTK credentials

{% hint style="info" %}
Don't have an RTKdata.com account yet? [Start 30-day Free Trial](https://rtkdata.com/try-rtk-corrections-free-for-30-days/) or [View Pricing](https://rtkdata.com/pricing/)
{% endhint %}

## Step-by-step setup

{% stepper %}
{% step %}

### Open the NTRIP / GPS Inject settings

In Mission Planner, go to **SETUP → Optional Hardware → RTK/GPS Inject**.
{% endstep %}

{% step %}

### Select NTRIP

From the connection-type dropdown, select **NTRIP**, then press **Connect**. A dialog appears asking for the caster details.
{% endstep %}

{% step %}

### Enter your RTKdata caster details

Mission Planner accepts the caster as a single string in the format `user:pass@host:port/mountpoint`. Use your region's host and your RTKdata credentials:

{% tabs %}
{% tab title="North America" %}

```
rtkUSERNAME:PASSWORD@rtk.rtkdata.com:2101/AUTO
```

* IP fallback host: `13.56.117.10`
  {% endtab %}

{% tab title="Europe" %}

```
rtkUSERNAME:PASSWORD@eu.rtkdata.com:2101/AUTO
```

* IP fallback host: `3.73.41.96`
  {% endtab %}

{% tab title="Australia" %}

```
rtkUSERNAME:PASSWORD@aus.rtkdata.com:2101/AUTO
```

* IP fallback host: `54.206.56.130`
  {% endtab %}
  {% endtabs %}

* Replace `rtkUSERNAME` / `PASSWORD` with your *RTK Credentials* from the dashboard (username starts with `rtk`).

* Keep the mountpoint **`AUTO`** in ALL CAPS. Alternatives: `AUTO_WGS84`, `AUTO_ITRF2020`, `AUTO_ITRF2014`.
  {% endstep %}

{% step %}

### Confirm GGA / position is sent

When prompted, let Mission Planner send the **vehicle's current position** to the caster (GGA). A resend interval of about **1 second** is ideal.

{% hint style="danger" %}
**GGA must be sent.** RTKdata uses your GGA position to select the **nearest reference station** and stream single-baseline RTCM3 corrections. RTKdata is single-baseline and location-keyed — it is **not** a VRS service. If Mission Planner sends a fixed/zero position or none at all, you will not receive corrections. See [NTRIP & GGA Essentials](/integration-hub/ntrip-clients-and-field-software/ntrip-and-gga-essentials.md).
{% endhint %}
{% endstep %}

{% step %}

### Verify RTK Fix

Watch the GPS status in Mission Planner (HUD / status bar). The fix type should progress **GPS → RTK Float → RTK Fixed**. Inject rate (bytes/s) should be non-zero once corrections flow.
{% endstep %}
{% endstepper %}

## Vertical reference (heights)

{% hint style="info" %}
RTKdata delivers **ellipsoidal heights** (WGS 84 ellipsoid). Apply a geoid model in your processing if you need orthometric (mean sea level) heights.
{% endhint %}

## Troubleshooting

| Problem                              | Cause                            | Fix                                                                       |
| ------------------------------------ | -------------------------------- | ------------------------------------------------------------------------- |
| Connects but no inject / stays Float | GGA / position not being sent    | Ensure Mission Planner sends the vehicle's current position to the caster |
| Authentication fails                 | Wrong credentials                | Re-check the `user:pass` part of the string (username starts with `rtk`)  |
| No corrections                       | Wrong host or mountpoint case    | Verify the regional host and that the mountpoint is `AUTO` in ALL CAPS    |
| Connection refused on a secure port  | Mission Planner NTRIP has no TLS | Use RTKdata's plain caster on port `2101` (no TLS needed)                 |

## Tips

* **One page, every ArduPilot vehicle** — copters, planes, rovers all use this same NTRIP/GPS-Inject flow.
* **Mountpoint `AUTO` in ALL CAPS.**
* **Plain port `2101`** — no TLS required, which suits Mission Planner's NTRIP client.

## Related Industry Solutions

* [Drones](https://rtkdata.com/drones/)
* [Robotics](https://rtkdata.com/robotics/)
* [Agriculture](https://rtkdata.com/agriculture/)


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