I would like to build a small expansion kit for model airplanes for a school project. This kit should then be connected to the aircraft's power supply and send a video with some sensor data to a laptop or Raspi. The problem with the whole thing is the radio transmission. Is there a transmitter-receiver module for the Arduino that can send almost 300m and offer enough bandwidth for a video stream?
This is not legally possible without an amateur radio license. You can of course buy something funny on Ebay that goes so far. With a little luck, customs won't pull you out of traffic either… But if the Federal Network Agency intervenes because you are causing radio interference somewhere (which is likely), I don't want to be in your skin or in the parents of your parents who paid it. That can also be five digits! Just for info… It won't be worth it to you / risk!
If that's attached to an airplane, then you usually have Freedom from obstacles to the receiver… So much longer range anyway than on the ground and through walls. It will probably not be 1000m but certainly a few hundred meters if it goes well. Stay here with something legal and design your school project so that that's enough. Or save yourself the recording, record it on SD in the plane and read it out again on the ground!
1000 m are also unnecessary because you can only fly the model airplane on sight. In 1000 m distance you can no longer see anything and it would be impossible to operate the model safely.
100m or maybe 200m transmission range should be enough.
And please don't forget the compulsory insurance.
Even at a distance of 300 meters, this can't be built up sensibly. Up to 50-100 meters would be possible, after that it will be difficult.
Take a look at the various FPV drones around there are enough. If you want to operate the whole thing legally, you have to stay below a certain transmission power. But you won't get very far with an Arduino.
