Two. The 15km transmission distance can only be reached underneath the FCC normal when calculated in an outdoor natural environment without having interference. The SRRC conventional is adopted in mainland China, as well as the furthest transmission distance is 8 km. Mavic 3M with RTK module for centimeter-degree positioning. Flight https://m3mhomes.com/why-families-are-moving-to-m3m-city-of-dreams-in-panipat/