1 stereo pair 44.1 kHz, UDP Mux for HD Radio, 32 QAM modulation. Two Channel System with LAN Includes SL9003Q QAM modulated Transmitter and Receiver, SL9000SERF Source Encoder and SL9000SDRF Source Decoder audio modules with AES/EBU and analog I/Os with three simplex RS-232 data circuits and one simplex 600 kbps Ethernet channel. .