# Setup RTK solution using a local network

**This step-by-step tutorial will let you to use a RTK Rover using a GNSS Base over a Local Network, thus without any telemetry kit.**<br>

Requirements :

1. Two computers : PC1 acting as a Base / PC2 acting as a rover
2. Two F9P devices connected to both PC : One configured as Base, the other one as a Rover. See here for procedure :

   <https://drotek.gitbook.io/rtk-f9p-positioning-solutions/how-to-get-started/zed-f9p-rtk-configuration>
3. Both computers are connected to the same local network

**STEP 1 : Check what is the IP address on Base computer PC1**

Press Windows + R key touch to open&#x20;

![](https://3825805345-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LYSZeu4HjB-NrVI4riL%2F-M-tj9KtctwJIqXdXDen%2F-M-tjdASZuuE-LM3uwDf%2FWindows%2BR.png?alt=media\&token=1f021416-3bad-4066-94d4-fd492491a665)

Then type in “cmd”, then click “OK” :

![](https://3825805345-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-LYSZeu4HjB-NrVI4riL%2Fuploads%2FrQ2Sd0kKh7VamEgje2R5%2Fcmd%20window.png?alt=media\&token=61e2dfc1-e13b-4839-9e98-4451cb09755c)

A new command prompt window opens. Type in “**ipconfig**”, then press **Enter**. Go down to “**IPV4 address**” and write down somewhere the IP address displayed. For instance, the one on DROTEK computer is 192.168.1.103&#x20;

{% hint style="info" %}
This address is needed for a later step. Keep it in mind.&#x20;
{% endhint %}

NOTE : bear in mind that IP addresses are for example purposes, replace the ones below with your own).

**STEP 2 : Configuring the Base as an NTRIP Caster.**

The base connected to the local network will be able to broadcast RTCM data to any rover that is connected to the same local network.

To do so, open **u-center software on PC1** **- Base**, then click on “**Receiver**” then “**NTRIP Server/Caster**…”.

A new window opens. Next go to “**More” tab** then configure the base caster as shown in the picture below.

Then click **OK**.

![](https://3825805345-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-LYSZeu4HjB-NrVI4riL%2Fuploads%2F5ti7rPkogYD3CUSxBJR0%2FNtrip_caster%20ucenter.png?alt=media\&token=acb0b2e6-9e57-41db-87e8-867a397fe5fc)

{% hint style="success" %}
The base caster is now working perfectly !
{% endhint %}

**STEP 3 : Configuring the Rover as an NTRIP client.**

The base is now continuously sending out RTCM data on the local network. You need to configure any rover to be able to gather these data to get a fixed and accurate positioning.

To do so, open **u-center software on PC2 - Rover,** then click on “**Receiver**” then “**NTRIP Client**…”.

Once again, a new windows opens. Then type in the base IP address we got from STEP 1. Next you need to type in the **SAME NAME** and **PASSWORD** that was set previously on the base during **STEP 3**.

Now click on the “**Update source table**” button located below.

Your base must be retrieved under the “**NTRIP mount point**” textbox.

Finally, click **OK**.

![](https://3825805345-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-LYSZeu4HjB-NrVI4riL%2Fuploads%2F510WvZQ9BObCH7v8Olx1%2FNtrip_client%20ucenter.png?alt=media\&token=8c86b52f-7a68-431b-bd20-0249fef7f01f)

{% hint style="success" %}
Your base and rover are now correctly connected to each other. The rover is starting receiveing RTCM data and will shortly get a fixed position.
{% endhint %}

{% hint style="info" %}
**All ZED-F9P ressources :**

<https://www.u-blox.com/en/product/zed-f9p-module#tab-documentation-resources><br>

**Going deep into ZED-F9P interface commands**

[https://www.u-blox.com/sites/default/files/u-blox\_ZED-F9P\_InterfaceDescription\_%28UBX-18010854%29.pdf](https://www.u-blox.com/sites/default/files/u-blox_ZED-F9P_InterfaceDescription_\(UBX-18010854\).pdf)
{% endhint %}

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