The TRIAX TOST Optical Satellite Transmitter with AGC is a core headend unit in the TOF (Triax Optical Fibre) system that converts wideband or Quatro SAT-IF signals for passive optical network (PON) transmission. It delivers near lossless satellite, DVB-T and DAB distribution over single-mode fibre with built-in Automatic Gain Control (AGC) and Automatic Slope Control (ASC) for stable signal performance.