Head-end and trunk amplifiers for 4 x SAT + Terrestrial with colour coded inputs/outputs. 18V DC to power LNB and V5 network (switchable) up to 2.0A (V5-100T and V5-200T). 12V DC to power terrestrial masthead pre-amplifier (switchable) 12V 100mA. Interstage level controls on SAT and Terrestrial inputs. Slope control on Terrestrial input. Earth bonding post. Switch-mode-power-supply (V5-100T and V5-200T). 2.0A DC pass via H Hi, H Lo lines (switchable). LED indicators for power status and short circuit / overload diagnostics