The paper deals with coaxial part of HFC CATV system. System parameters determinative in obtaining the desired signal level, carrier-to-noise ratio and acceptable nonlinear distortions are considered 

Contemporary CATV networks are of the hybrid fiber coax (HFC) type. Such a network is comprised of an optical ring which is fed by the hedend, multiple hubs connected to the optical ring, access networks, and home communications terminals (HCTs)

In order to overcome the loss of the distribution cables and to provide power to drive end terminals, RF amplifiers are used throughout the distribution system. These must be designed to add as little signal degradation as possible, particularly noise and distortion, consistent with providing the required gain and total power output [1- 3