I have connected everything using the following guide GPS-RTK Hookup Guide - SparkFun Learn. But, the message in u-center does not show up.
Ok, you’re going to need to describe exactly what you’ve physically built.
Is this using the GPS RTK 2 ZED-F9P? One of them, or two?
What’s the source of your “correction” data?
Can you confirm the receiver is getting RTCM3 packets? Use UBX-RXM-RTCM to check.
We’d need to judge where in the process this is falling down.
I am using one GPS RTK 2. The correction source network is UNAVCO data
Yes, it is getting RTCM3 packets
What RTCM3 messages are being received?
What are UBX-NAV-PVT and NAV-SIG reporting?
Try sharing a screenshot of your u-center data and a photo of your wiring/setup