2. The 15km transmission length can only be reached under the FCC standard when calculated in an outdoor environment without the need of interference. The SRRC common is adopted in mainland China, as well as the furthest transmission length is 8 km. Mavic 3M with RTK module for centimeter-stage positioning. https://m3mhomes.com/residential/m3m-xpressway-114-sector-114-gurgaon/