DMSP-5B F4

DSAP-5B (Defense Satellite Application Program Block 5B), later DMSP-5B (Defense Meteorological Satellite Program Block 5B), was the seventh version of the military meteorological satellites of the Defense Meteorological Satellite Program. The designation DMSP-5B (Defense Meteorological Satellite Program Block 5B) was assigned in December 1973 to these satellites.