Observed negative correlation between an interfering signal on a transhorizon path and wanted signals on terrestrial line-of-sight paths

Results are described which show an enhanced hourly-median signal level observed on a transhorizon path at the same time as faded median signal levels were observed on two line-of-sight paths terminating at the same point. This suggests the need for improved interference co-ordination between satellite Earth stations and terrestrial stations sharing the same frequency bands.