RM 20 (P72-2)

RM 20 (P72-2) [USAF]

RM 20 (Radiometer 20) was a low-altitude satellite in circular orbit carrying four experiments. Two of the experiments were to study radiation from the earth horizon. A third experiment was to observe solar extinction through the stratosphere, and the fourth was to study ionospheric radio propagation. The spacecraft experiment support equipment included a three-axis stabilization system and a tape recorder.