that in the range between 0.1 and 1 GHz, the space research service (SRS) and space
operation service have a combined primary allocation of 3.9 MHz and a combined secondary
allocation of 10.35 MHz in the space-to-Earth direction, but only a combined 2.4
ITU-R SA.1396-1999 history
1999ITU-R SA.1396-1999 Protection Criteria for the Space Research Service in the 37-38 GHz and 40-40.5 GHz Bands