8VSB or QAM Input, Baseband Audio/Video Output. The MDDM-860 is a digital demodulator and decoder that receives one input in ATSC 8VSB (digital off-air) or "clear" QAM (digital cable) format and delivers one NTSC composite analog video and stereo audio output. The unit allows delivering of a digital off-air program to viewers with an analog TV set. It also allows operators to cherry-pick channels from a clear QAM cable lineup. Headends processing analog broadcasts using Blonder Tongue's MIDM demodulators and MICM modulators can be upgraded seamlessly to process digital broadcasts by simply replacing the MIDM with a MDDM.