A satellite communication system comprising: a plurality of antenna elements (178a-d) comprising respective first polarization ports communicating first polarization signals, and second polarization ports communicating second polarization signals; and an interface circuit (174, 162) structured to receive the plurality of first polarization signals, amplify the plurality of first polarization signals, split each of the plurality of first polarization signals into a first polarization primary signal and a first polarization secondary signal and apply independent phase shift and gain shifts to the first polarization primary signal and the first polarization secondary signal, receive the plurality of second polarization signals, amplify the plurality of second polarization signals, split each of the plurality of second polarization signals into a second polarization primary signal and a second polarization secondary signal and apply independent phase shift and gain shifts to the second polarization primary signal and the second polarization secondary signal, sum the plurality of first polarization primary signals and the plurality of second polarization primary signals for a first beam, sum the plurality of first polarization secondary signals and the plurality of second polarization secondary signals for a second beam, translate the first beam to a first intermediate frequency, translate the second beam to a second intermediate frequency, characterised in that the first beam and the second beam are combined onto a common cable, wherein the first beam and the second beam are associated with different data sources. a plurality of antenna elements (178a-d) comprising respective first polarization ports communicating first polarization signals, and second polarization ports communicating second polarization signals; and an interface circuit (174, 162) structured to receive the plurality of first polarization signals, amplify the plurality of first polarization signals, split each of the plurality of first polarization signals into a first polarization primary signal and a first polarization secondary signal and apply independent phase shift and gain shifts to the first polarization primary signal and the first polarization secondary signal, receive the plurality of second polarization signals, amplify the plurality of second polarization signals, split each of the plurality of second polarization signals into a second polarization primary signal and a second polarization secondary signal and apply independent phase shift and gain shifts to the second polarization primary signal and the second polarization secondary signal, sum the plurality of first polarization primary signals and the plurality of second polarization primary signals for a first beam, sum the plurality of first polarization secondary signals and the plurality of second polarization secondary signals for a second beam, translate the first beam to a first intermediate frequency, translate the second beam to a second intermediate frequency, characterised in that the first beam and the second beam are combined onto a common cable, wherein the first beam and the second beam are associated with different data sources. receive the plurality of first polarization signals, amplify the plurality of first polarization signals, split each of the plurality of first polarization signals into a first polarization primary signal and a first polarization secondary signal and apply independent phase shift and gain shifts to the first polarization primary signal and the first polarization secondary signal, receive the plurality of second polarization signals, amplify the plurality of second polarization signals, split each of the plurality of second polarization signals into a second polarization primary signal and a second polarization secondary signal and apply independent phase shift and gain shifts to the second polarization primary signal and the second polarization secondary signal, sum the plurality of first polarization primary signals and the plurality of second polarization primary signals for a first beam, sum the plurality of first polarization secondary signals and the plurality of second polarization secondary signals for a second beam, translate the first beam to a first intermediate frequency, translate the second beam to a second intermediate frequency, characterised in that the first beam and the second beam are combined onto a common cable, wherein the first beam and the second beam are associated with different data sources.