1. Introduction: CYR8602-4 is a kind of low-costing receiver that applies for the development of HFC network node on miniaturization to be suitable for duplex HFC network development and be scalable in broadcast & TV, telephone and data transmission at the edge of art. It can upgrade to become an optical workstation after inserting reversed package. (Including one reversed optical transmitting module RADV03, two wave allocaters, one low-pass filter, two shorting stub). 2. Features: A. Working bandwidth: 870 MHz. B. Four-port-level output. C. AGS controlling. D. Low receiving optical power. E. Thunder-protection in every input and output. F. High quality switching power supply ensures the high efficiency. G. Passivation for aluminum-alloy crust. H. AC:10A , (60V or 220V)