Hi - I need to establish a bi-directional data link between a ground station and an aerial vehicle. Distance should be at most 3KM and should be in a relatively flat area, but there is the possibility that there will be buildings in the way, so the stronger the signal the better. As far as data rate goes, 10KBps would be great, but a lesser data rate would be OK as well. The ground station will have plenty of power available to it, but the aerial vehicle will have a much more limited power supply, so the less power it uses the better. Another limiting factor is weight and size - really the smaller the better when it comes to weight/size. Ideally I'd like to come up with something the size of an altoids tin.
I have been looking at the Nordic Semiconductor nRF905
So - does anybody have any suggestions as to good RF solutions for this application? Thanks so much for your time!
Michael J. Noone