The knob or slider that adjusts the level of increase for the system or part of the system This is how volume is adjusted Another term for this is level control
there are two non-specific gain control signals in the ART network: G1 and G2 for the F1 and F2 layers, respectively; G1 implements the 2/3 rule in the F1 layer, G2 controls (enables/disables) the F2 layer
Gain Control of the transponder is done via TT&C commands to the Flux Control Attenuator (FCA) in the satellite The FCA is used to set the incident flux density necessary to saturate each transponder (SFD)