The regular way is to use a Ntrip Modem at a second serial port of the F9P, the modem delivers the RTCM stream, and gets vice versa the GGA sentence required for VRS from the f9p.
Those modems are available, but very expensive 1300-2200€.
At the moment I‘m working on a ESP32 Modem, the Ntrip cilent now runs, but it requires a WiFi with I-Net access at the moment.
Next step is to add a celluar device to do the whole way.
Im not sure if we should tie this millstone to AOG?
Otherwise such a client should be easy to add and would reduce external components? Really?
For a reliable connection a external antenna for the celluar part is reqired, but impossible to add to most of the Tablets/Notebooks.
If you add a external cellular device you did not make a step ahead.
Additionally Windows updates will sometimes suck up you cellular volume.
Final solution could be a roof device maybe with ESP + f9p + cellular + wifi udp so the Antennas for GPS and cellular are at the right place