Building Raspberry Pi HAB radio tracker software (part 3): LoRa range and battery life tests

This is the third part of a series of blog posts that follow and document my first attempt to launch a high-altitude balloon (HAB) to perform aerial photography. The posts are focused on developing Linux-based software on Raspberry Pi for tracking high-altitude balloons. This post presents the results of LoRa radio transmission tests to determine the maximum range of the transmissions of the high-altitude balloon tracker device I have built.