Satellite-to-earth rain attenuation at 11.7 GHz was measured at Waltham, Massachusetts (42.4°N, 71.3°W; elevation angle 24°), utilizing the Communications Technology Satellite (CTS) beacon signal. This paper summarizes 29 months of measurements by presenting attenuation and rain rate distributions, fade duration distributions, fading rate distributions, and statistical relationships between attenuation and rain rate. For a two-year statistical base, rain attenuation exceeded 9.7 dB for 0.01% of the time and 2.0 dB for 0.1% of the time.
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