Effects of arctic nuclear explosions on satellite radio communication

Russian Arctic nuclear explosions during the fall and winter of 1961 are shown to produce anomalous blackout of radio signals from various satellites. The frequency range of observation was between 20 and 400 Mc. Besides the blackout, reception from far beyond the geometric horizon is observed. These anomalies of satellite reception are tentatively correlated to two shot-produced centers of disturbance. The anomalies repeat themselves at specific time intervals after the explosion.