Two. The 15km transmission length can only be reached beneath the FCC normal when measured in an outdoor environment without the need of interference. The SRRC conventional is adopted in mainland China, as well as furthest transmission length is 8 km. Helpful aerial surveying should begin to see the invisible. https://m3mhomes.com/residential/m3m-st-andrews-at-scda-sector-113-gurgaon/