for forward path fibre optic links in CATV and FTTx networks. The transmitter has an extended frequency range to fulfil DOCSIS 3.1 requirements. HDO774 has been optimised for QAM transmission and it can carry more than 100 QAM channels i.e. a full channel load up to 1.2 GHz. HDO774 can be also loaded with a limited amount of analog TV channels together with QAM channels. The module is installed into HDX installation frame. The transmitter has two equal input sections with level and slope adjustments to support broadcast and narrowcast signal distribution. The RF isolation between the input branches is high minimising the leakage of narrowcast signals into unwanted narrowcast node segments. The power consumption is low but HDO774 still offers the high performance and the widest variety of features.