The distance of the bird with the lost of wifi signal varies and today the longest distance was within 1,000 feet and it keep on dropping I lose the signal had within 25 feet of the controller. It seemed the longer I had the range entender on the more it dropped. I am thinging it is the Range Extender on the controller. My therory is the extender heats up and fails, I have 3 batteries and I belive on the first flight the connection will not be lost but on the 2nd battery the issue will start an increase the longer the range extender is on. I have read in various forums the problem the DJI extender has heat issues and I hope this is my problem, which is an easy fix in the short term with a purchase of a replacement.