QPSK to QAM Trans Modulator for cable TV (CATV) headend: Equipment combining QPSK decoding with QAM modulation QPSK to QAM Trans Modulator for cable TV (CATV) headendFeaturesComplying DVB standard signal channel codingSupport full range variable data rate, bandwidth and QAM mode Data stuffingSuper buffer (optional), anti-burst code streamPID filter, re-reflection, PSI,SI information synchronal ...