Two. The 15km transmission distance can only be accomplished under the FCC standard when calculated in an out of doors surroundings without interference. The SRRC regular is adopted in mainland China, and also the furthest transmission length is eight km. Mavic 3M with RTK module for centimeter-stage positioning. Flight Regulate, https://m3mhomes.com/residential/m3m-golf-hills-sector-79-gurgaon/