For AGopenGps you can have RTK correction with only The SimpleRTK2B or SimpleRTK2Blite, this have to be done over internet (ntrip) trough AGopenGPS.
This is how I use it for AGopenGPS.
I use the bluetooth module only for opengrade. (no NTRIP stuff built in)
You also can receive RTK correction over radio with the appropriate module but I never closely look at it.
Hi all,
Regarding this F9P module, I supply it with usb and that is enough. on the other hand, be sure to set the baudrates to 115200 in windows (device manager, right click on the com port). Indeed, if you do not do it the speed can be too important and saturate the com port. This will cut your antenna in the field. sorry for my poor English