electromechanical controls for use audio and visual devices; antenna measuring machines, namely, wavemeters and sound level meters; electrical wires and cables; electrical communication apparati and instruments, namely, interphones, AV signal/TV switches and selectors, distributors, splitters, audio apparati and parts therefor, audio amplifiers, audio speakers, communication antennas, amateur radio and parts therefor, antenna rotators, antenna controllers, TV tuners, chimes, AC noise filters ...