You people using repeaters need to move them some distance from your take off position this will extend the range. If you install a free WiFi signal app on whatever device you can check the repeaters strength at a distance.
I have been using repeaters for several years with Bebop drones. My repeater is usually a few hundred feet away line of sight in the direction of flight. I use a narrow beam antenna for long distance flights. The small repeaters should be basically omnidirectional.
If you have a good repeater signal say at 200' you have just extended your range that far in basically a circle plus whatever range the tello adds to it(obstructions of course reduce range). Also raise it on a non metallic pole. I use pvc at about 10' agl. This maybe be over kill for such a basic drone as the tello but it does apply.
I have been using repeaters for several years with Bebop drones. My repeater is usually a few hundred feet away line of sight in the direction of flight. I use a narrow beam antenna for long distance flights. The small repeaters should be basically omnidirectional.
If you have a good repeater signal say at 200' you have just extended your range that far in basically a circle plus whatever range the tello adds to it(obstructions of course reduce range). Also raise it on a non metallic pole. I use pvc at about 10' agl. This maybe be over kill for such a basic drone as the tello but it does apply.