Attenuation due to hydrometeors in three millimeter wave bands

Attenuation due to atmospheric hydrometeors is measured simultaneously on experimental terrestrial radio links operating at millimeter-wave frequency bands 58, 94 and 122 GHz. Attenuation events observed during a period from May 2013 to April 2014 are analyzed statistically to obtain monthly cumulative distributions as well as worst month and annual statistics of attenuation. The frequency bands 94 and 122 GHz suffer from slightly higher attenuation than the 58 GHz band but the difference between 94 and 122 GHz is relatively small.