What is the specific (e.g., u-blox F9P)? Are you trying to connect to a 3rd-party RTK network ? Configure GPS with U-Center

Once connected, you must configure the receiver to function as a Base or Rover. A. Setting Up as a Rover (10Hz Example) Go to Tools -> Receiver Configuration .

To give you the most relevant guidance, could you let me know: Are you setting up a or a Rover ?