electronic equipment and related components, namely, low frequency (LF) through microwave transmitters; LF through microwave receivers; LF through microwave transceivers; LF through microwave antennas; dummy loads for transmitters and transceivers; antenna feed-line switches and matrixes; exciters and amplifiers; oscillators and synthesizers; multitone generators and modems; computer and process controllers; light emitting diode, liquid crystal and related displays; AC/DC input and output interface boards and modules; marine bilge and flooding alarms for ships; navigation panels for ships; battery chargers and standby electrical power supplies; electrical power supplies; fiber optic modulators and demodulators; video amplifiers; wiring and cable harness assemblies; automatic Built-In-Test-Equipment (BITE); pulse modulators for radar units; timing and signal processors; timing and clock generators; tone generators; dial tone multi-frequency generators; buoy controllers; audio and radio frequency couplers; aircraft runway light and signal control units; airport runway vision control units; radar units; sonar; electronic ozone generators for purification processes; microwave transmitters in the nature of RF and microwave heating/induction units; encoders; passive and active electronic filters; computer interface connectors; harness modules; null modem and modulators; auto-answer and fax switches; satellite video and audio switching consoles; motor control modules; industrial interface module and connectors; manufacturing process controllers; electronics circuit boards and modules; and test equipment for RF, optical, digital and analog functions