MicoAir LR900-F 890-915MHz 500mW 27dBm Data Transmit Module For Pixhawk Ardupilot PX4 30KM Long-Range LoRa Telemetry RadioThe LR900 F P Telemetry Radio is a small, cheap radio with superior performance for flight controller that typically allows ranges of better than 30kilometers. And it is very suitable for Pixhawk or other Audupilot PX4 flight controller. It will connect automatically when power up without any configuration unless you need to implement some special features. The LR900 F P works in the 915MHz, so is better to use 2. 4GHz receiver than 915MHz receiver