... support QPSK,16QAM,32QAM,64QAM,128QAM and 256QAM 4.FEC fuifill DVB-C QAM-4 QAM Modulator is mainly used in low-end markets ... complete function, highly integration and most reasonable price. The Modulator can input four-way TS (ASI) and outputs one-way ... , the four-way TS, without multiplexing, are transferred to QAM Modulator, and are processed with intermediate frequency (four adjacent frequency with ...