Modifiying a Phantom 4 Adv drone to add RTK - possible?

GPS/GNSS Development Boards
1

Does anyone know if it is possible and feasible to modify a DJI Phantom 4 Adv drone to add RTK? Specifically to add an RKT antenna and then use a SparkFun RTK Surveyor unit as the base station. Off-the-shelf mod kits cost ~$2k.

2

Possibly?

You’d need to try and see if it works though. If it f does, you could probably make a killing selling kits.