We are working on a model rocket project, it will carry a scientific payload and it will be launched to 3 km altitude. We have a data link between the rocket and the ground station, we are using RFM96W pair now. However, we need to get data from the payload so our receiver should be able to listen to multi-transmitter. But as far as I read the datasheet of RFM96W, it doesn't support it. As a result, I need a system consists of 2 transmitters and 1 receiver that be able to send sampled data to the ground control system over a 3km air gap. What is your advice for my system?