Pixraptor - Tiny RTK integration

ArduCopter Copter 3.4
1

Hi

I am using the Tiny RTK GPS with the Pixraptor (similar to Pixhawk flight controller) with custom firmware and custom GCS which supports RTK

I would be glad if any of you could help me with my queries
Hardware:

  1. Base needs to be connected to its telemetry and needs power. Could I power it by a USB cable connected to a computer?

Software

  1. I suppose I could follow the instructions given here http://px4.io/docs/rtk-gps/2 ?
  2. QGroundControl doesn’t support GPS injection ?