> For the complete documentation index, see [llms.txt](https://drotek.gitbook.io/rtk-f9p-positioning-solutions/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://drotek.gitbook.io/rtk-f9p-positioning-solutions/tutorials/setting-baudrates-base-and-rover.md).

# Set Baudrates

**This step-by-step tutorial will let you to manually set the UART 1 & 2 baudrates for the Base as well as the Rover.**

First, connect your GNSS device to a computer using a USB micro cable.

![](/files/-LdEnYZLwhXVFEwUuCNY)

Now start the U-blox “u-center” software. Then, on the top left corner of the screen, left-click on the reversed tiny black triangle to select the COM Port related to your GNSS device. (it may differs from COM7 as shown in pictures)

![](/files/-LYbIddBqnC-aXKJ1bxh)

Make sure the connection icon is blinking in the bottom state bar. It indicates that the serial communication between the computer and the GNSS device is working.

![](/files/-LYbHSKTiJZ0j0qAf-5e)

Next go to ‘View’ then click on “Generation 9 Configuration View”

![](/files/-LYbUsIAWEUg8JmCOVN6)

Now, let's set the UART 1 & 2 baudrates manually. 

* First, double click on “CFG-UART1”, then an expanded menu appears. Click on “CFG-UART1-BAUDRATE”. 
* You can now edit the text box to match your desired baudrate. (Up to 921600 bauds)
* Next, click on the 3 buttons underneath called “RAM”, “BBR” and “FLASH”. The commands should appear in the “ready-to-send” box.
* Finally, simply click on “Send” to write the baudrate configuration to the RTK device.

Repeat the same procedure with “CFG-UART2”.

![](/files/-LYbNTZGqLCjufXW9RhA)

{% hint style="success" %}
You have successfully set the UART 1 & 2 baudrates !
{% endhint %}