I want to be able to shoot a ball and then record the distance it travelled and the speed, the ball can have circuitry placed inside. I know very little about electronics however my research has led me to believe that, the best option would be to use RF 433 Mhz or 868 Mhz as they are- *Sufficient to be able to supply the 2 pieces of information required. *Can work on low battery voltage. *Cover the desired line-of-sight distance at around 500 meters. *Minimal components/cost. *Transmitter PCB can be designed at less than 15mm². It would be desirable if the speed and distance measured can be seen on a basic app. As a starting point, is using RF the way to go or is there other options? How do I find someone that could help with the design?