I have always thought there is huge potential in transmitting data over the FM bands, especially when it involved one of my kite ideas. I once came up with the concept to fly a bunch of sensors via kites that would relay the information down on the ground via a low powered FM transmitter. This could then be adapted to broadcast your own recordings should you be at the beach with friends and wanted to broadcast your own radio show to the listeners below. There are many similar projects out there, take this Raspberry Pi project here for example. After buying a number of the old in-car FM transmitters from a car boot sale recently I decided to revisit this project and test it out only to find that the range of the things wasn’t very good at all. Although the older generation in-car FM transmitters are rumoured to have a better range than the more modern solutions, I was still only achieving a few metres. So I set about modifying the FM transmitter to see if I can boost its r...
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