A satellite radiotelephone system includes a space-based component, an ancillary terrestrial network, a monitor and a controller. The space-based component is configured to wirelessly communicate with radiotelephones in a
satellite footprint over a
satellite radiotelephone frequency band. The satellite
footprint is divided into satellite cells in which subsets of the satellite
radiotelephone frequency band are spatially reused in a spatial reuse pattern. The ancillary terrestrial network is configured to wirelessly communicate with radiotelephones in the satellite
footprint over at least some of the satellite radiotelephone
frequency band, to thereby terrestrially reuse the at least some of the satellite radiotelephone frequency band. The monitor is configured to monitor
wireless radiation at the space-based component that is produced by the ancillary terrestrial network and / or the radiotelephones in satellite cells that adjoin a satellite
cell and / or in the satellite
cell, in at least part of the subset of the satellite radiotelephone frequency band that is assigned to the satellite
cell for space-based component communications. The controller is configured to adjust the
radiation by the ancillary terrestrial network and / or the radiotelephones, in response to the monitor.