Conventional spot beam satellites receive return uplink beam signals that each correspond to a separate and unique return downlink beam. An embodiment of the invention allows flexible coverage areas by selectively attenuating and combining multiple return uplink beam signals and transmitting them on a single beam to a gateway terminal. This allows uplink capacity to be dynamically allocated amongst different uplink signals. Offered load in different beams can be predicted and used to set the attenuation values appropriately and the attenuation values may also be controlled remotely.