References - IoTThinks/EasyLoRa GitHub Wiki Hardware Radio SDR v3 data sheet: https://github.com/IoTThinks/EasyLoRa/files/3746451/RTL-SDR-Blog-V3-Datasheet.pdf Software String Optimization https://cpp4arduino.com/2018/11/21/eight-tips-to-use-the-string-class-efficiently.html https://cpp4arduino.com/2018/11/06/what-is-heap-fragmentation.html