Two. The 15km transmission length can only be attained underneath the FCC normal when calculated in an out of doors surroundings with out interference. The SRRC conventional is adopted in mainland China, and also the furthest transmission length is 8 km. Mavic 3M with RTK module for centimeter-level positioning. Flight https://m3mhomes.com/residential/smart-world-low-rise-floors-sector-79-gurgaon/