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Signal Interference

SandiSCE

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I have been researching this problem, including a long chat with Ryze tech help, and so far have not found much for solving my problem. Has anyone else found a good working solution? Here is the situation:

My flying club has been getting together in a large ballroom at our community building to fly with obstacle gates. We have found that we get bad signal interference, which causes the Tello to just stop responding and hover where it is. There are 2 wifi hotspots in the room, but I have noticed this happening when outdoors as well: when I was flying with my grand daughter, we noticed the same behaviour when we or the Tellos were too close to each other. In the ballroom, we found that whenever 3 or 4 are flying at the same time, no matter how far apart from each other they are, they get signal interference. During the timed runs (for our little contest), we had just one flying at a time, but one of them still stopped dead in the middle of the run when the next pilot started prepping for their run.

Research suggests that the wifi signals from the hotspots are the problem, and the Tello automatically picks a channel based on how busy the channel is. Evidently there is no way to manually set the channel. Some folks, including Ryze tech, have suggested forgetting the building’s wifi, but that will cause problems for the pilots, as they will have to know how to dig that network back up on their phone when they are finished flying. This is a senior group, so I really don’t want to introduce that complication to their lives.

Has anyone here found a viable solution? We have about a dozen pilots, and that number is growing. Thanks in advance for your help!
 

Hal C in TN

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Are you using WiFi repeaters? It might help filter out unwanted signals and give you longer range. Are you using the Tello app or the Tello FPV app? I'm having great luck using the repeater with the Tello FPV app. You probably want to have pilots about 5 yards apart. :unsure:
 

SandiSCE

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Are you using WiFi repeaters? It might help filter out unwanted signals and give you longer range. Are you using the Tello app or the Tello FPV app? I'm having great luck using the repeater with the Tello FPV app. You probably want to have pilots about 5 yards apart. :unsure:
I haven’t used an extender although I have one. Does each pilot need to have their own? Several of us have the Tello FPV app; I will suggest they switch to that and see if it makes a difference. Agree about the five yards. During the practice time, though everyone is everywhere so it’s a little hard to enforce! Last time, we had several bystanders pop into to watch, and we noticed big interference as soon as we approached the gates in that corner, so we asked them to turn their phones off; it did help! Thanks for the suggestion!
 

Hal C in TN

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Near Nashville, TN, USA
I haven’t used an extender although I have one. Does each pilot need to have their own? Several of us have the Tello FPV app; I will suggest they switch to that and see if it makes a difference. Agree about the five yards. During the practice time, though everyone is everywhere so it’s a little hard to enforce! Last time, we had several bystanders pop into to watch, and we noticed big interference as soon as we approached the gates in that corner, so we asked them to turn their phones off; it did help! Thanks for the suggestion!
It sounds like where you fly indoors is pretty much prone to interference. Without signal boost, you don't get much range outdoors either. You folks will probably benefit from using the WiFi repeater/extender because you would be increasing signal strength to cut down interference and increase your range. Forgetting other WiFi is a pain and probably unnecessary with the boosted signal.

The good news about doing that is it is fairly inexpensive to get one, but the bad news is they are a royal pain to install. The good news is that they only need to be installed once and there are several good sources for how in other forums both here and on YouTube.

One thing that is a bit pricey but super handy is to use a USB power station to power it. Available from several sources like Amazon, the Smartree DT30 has USB power out for the extender plus 3 Tello battery charging ports. A really great benefit is that you can charge 3 flight batteries at the same time. You can also set the unit with extender down several yards away from your flying station.

Being a "senior" myself, I can relate to wanting simplicity.... but I believe this is worth the initial hassle and expense. I got a lot of help from a lot of good folks here getting advice to make things work. It does sound like you have gathered a lot of pilots such as I haven't experienced. You may need to practice pilot discipline like you were flying 72MhZ in days gone by due to competing for 10 available WiFi channels. I highly recommend that you check out Raul's post linked above.

I hope this is helpful. :)
 

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