I have an old wifi extender lying around....TP-Link 300Mbs Universal Wi-Fi Range Extender TL-WA850RE....and I decided to try and link it to my new Tello drone. Lo and behold the extender lit up with five full bars when I turned on the drone. I placed the drone at one end of the house on the upper floor and went to the opposite end in the basement. Without the extender on I was getting 40 db and a weak wifi signal. With the extender connected I had 90 db in the same location. I need to take it outside and continue my experiment. This TP extender is AC so I will plug it into my Goal Zero Yeti power bank. I can also charge my batteries off the Yeti out in the field. Just thought I would share this possible option.