There are 8 samplers per antenna, each capable of digitizing a baseband signal up to 2 GHz wide. For the correlator it doesn't matter whether these are 8 independently-tunable IFs which are each 2 GHz wide, or 2 independently-tunable IFs each 8 GHz wide which are split up just before the samplers; the analog IF processing system will of course impose its own constraints. Following the conventions of §1.1, these 8 ``chunks'' of 2 GHz are referred to hereafter as basebands or BBs.