Abstract
There are some studies to apply stratospheric platforms to telecommunication or broadcasting services. In this paper, outline of digital broadcasting experiments with Pathfinder Plus, which is a solar plane developed in USA, is introduced. UHF signal was transmitted from the plane while it was kept at the height of 20km and reception was done on the ground. Japan's digital terrestrial broadcasting standard ISDB-T was used. The payload equipments worked well in the environment of low temperature and low atmospheric density. Reception was well achieved even while combination of Mode 3 and parameters which require highest CN ratio are used.
