OTS propagation measurements at Eindhoven University, Netherlands

Since the launch of O.T.S.-2 in May 1978 nearly permanent reception of the TM and B sub 0/B sub 1 beacon took place, with respect to attenuation on the path satellite-groundstation. A large amount of fades could be registered, the largest of about 15 dB lasting nearly 10 minutes. Daily variations of the TM beacon of 500 Hz and long time variations over a period from June 1978 to October 1979 of more than 5000 Hz have been recorded. The B sub 0 beacon showed very large frequency variations of 20 to 30 kHz per day and long time variations of about 130 kHz over the same period as the TM variations. Statistical material, inclusive cumulative distributions became available over the entire period of measurements.