# u‑center (u‑blox F9)

## u‑center (u‑blox F9) - How to Configure NTRIP with RTKdata.com

Get **centimeter‑level** positioning on your **u‑blox F9** (e.g., ZED‑F9P) via the built‑in **NTRIP client** in **u‑center**.

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### Requirements

* u‑blox **F9** receiver + GNSS antenna (open sky)
* **u‑center** on Windows
* Internet connection (Ethernet/Wi‑Fi or tethered)
* **RTKdata.com credentials** (username/password).&#x20;

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

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### Step‑by‑step

{% stepper %}
{% step %}

#### 1) Connect receiver & pick COM

Attach antenna, connect USB, open **u‑center**, and select the correct **COM port**. Confirm a basic position (e.g., *3D*).
{% endstep %}

{% step %}

#### 2) Open the NTRIP client

**Receiver → NTRIP Client…** to open the NTRIP window.
{% endstep %}

{% step %}

#### Enter RTKdata.com connection settings (Regional hostnames + IP fallback)

Use the **regional RTKdata.com hostname** where possible. If your device only accepts numbers or your network DNS blocks hostnames, use the **numeric IP** fallback. Keep **ALL CAPS** where noted.

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

* **Host (domain):** `rtk.rtkdata.com`
* **Host (IP fallback):** `13.56.117.10`
* **Port:** `2101`
* **Username / Password:** your RTKdata.com credentials
* **Mountpoint (ALL CAPS):** `AUTO` (recommended) — or `AUTO_WGS84`, `AUTO_ITRF2020`, `AUTO_ITRF2014`
  {% endtab %}

{% tab title="Europe" %}

* **Host (domain):** `eu.rtkdata.com`
* **Host (IP fallback):** `3.73.41.96`
* **Port:** `2101`
* **Username / Password:** your RTKdata.com credentials
* **Mountpoint (ALL CAPS):** `AUTO` (recommended) — or `AUTO_WGS84`, `AUTO_ITRF2020`, `AUTO_ITRF2014`
  {% endtab %}

{% tab title="Australia" %}

* **Host (domain):** `aus.rtkdata.com`
* **Host (IP fallback):** `54.206.56.130`
* **Port:** `2101`
* **Username / Password:** your RTKdata.com credentials
* **Mountpoint (ALL CAPS):** `AUTO` (recommended) — or `AUTO_WGS84`, `AUTO_ITRF2020`, `AUTO_ITRF2014`
  {% endtab %}
  {% endtabs %}

{% hint style="warning" %}
Only these four mountpoints are valid. Typing local CRS names as mountpoints will result in **no corrections**. Always use **ALL CAPS**.
{% endhint %}
{% endstep %}

{% step %}

#### 4) Verify connection & FIX

The NTRIP icon turns **green** when streaming. Watch solution evolve **Autonomous → RTK Float → RTK FIX**.
{% endstep %}
{% endstepper %}

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### Tips

* Use **OPEN SKY** for faster convergence
* If stuck on **FLOAT**: re‑check IP/port, credentials, mountpoint = `AUTO`; reconnect

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Need help? → [Network parameters](https://docs.rtkdata.com/get-started/network) · [Troubleshooting](https://docs.rtkdata.com/support/troubleshooting-and-faq)
