Syntax for connecting the u-center NTRIP to MP

Hi all.
I’m building my kayak into a Hydrographic Survey Vessel. On land I have the XXL RTK Base connected to my laptop. I use a long range WiFi link with these radios http://www.invictuswireless.com/LigoDLB2-p/ligodlb2.htm. On the Kayak I have the XL RTK connected to Pixhawk3 Pro and a PC running windows and Hypack for the collection of survey data.
I have set up the u-center to run as NTRIP Server and in the bottom line it reads: NTRIP Server: 198.51.100.1:5200 (this is the ip of my laptop, I control the Kayak PC via Remote Desktop).
What syntax shall I use in RTK/GPS Inject ? I cannot get it to connect…
Brgds
Bo

Sounds like a great project. I’ve only used RTK GPSs using the MP as the base station sending the injection messages and only when using the Here+ GPS.