Zinwell DIRECTV B Band Converter Module BBC, SUP-2400 (QTY 2) The B-Band Converter (BBC) module SUP2400 enables H20 H24, HR24 and HR20 receivers to receive HD programming. The HR20 requires two B-Band converts, one for each tuner BBC up-converts the B-Band into a 1650-2150Mhz usable spectrum