Performs regular maintenance, repair, testing alignment, alterations and adjustment on all headend equipment including, but not limited to, processors, modulators, demodulators, encoders, decoders, satellite receivers, all types of switchers, fiber optic transmitters, fiber optic receivers, other fiber optic equipment, RF combining networks, digital headend equipment, telephony equipment, generators, air conditioning, power conditioning and other headend and plant equipment. Performs headend alterations including design changes, service additions, service changes, channel rearrangements, equipment improvements and changes including air conditioning, power conditioning, standby generators, towers, antennas and satellite RX/TX stations.