Prototype system for a ultra long distance via sensor network MAD-SS balloon transmitter

Abstract

In this study, we conducted long-distance radio propagation experiments at 1mW/145 MHz to realize low-power long-distance communication for wildlife research and disaster prevention telemetry [1]. We successfully realized long-distance (over 300km) ground-air-ground communications via a balloon (elevation: ~14,000 m) with 1 mW radio power.