Complex sentence: CBEFT occupied analogue UHF 35 for less than a year before going permanently dark, as by 2011, the CBC had made clear that it had no plans to convert any non-originating stations in mandatory transition markets to digital.
Split into simpler sentences: CBEFT occupied analogue UHF 35 for less than a year before going permanently dark. By 2011, the CBC had made clear that it had no plans to convert any non-originating stations in mandatory transition markets to digital.