Electronic and optical communications instruments and components, namely, digital transmitters; Electronic transmitters and receivers for security, intelligence, military and surveillance operations; Hardened units composed of microprocessors and integrated transmitters and receivers installed in the field and on board both mobile and stationary equipment in industrial operations to collect data from various applications, to transmit the data to central processing facilities, and to receive data transmissions directed to the applications and equipment; Hardened units composed of microprocessors and integrated transmitters and receivers installed in the field at industrial sites to collect data from monitoring and control installations, to transmit the data to central processing facilities, and to receive data transmissions directed to the installations; Hardened units composed of microprocessors and integrated transmitters and receivers installed in the field, affixed to equipment, or worn by personnel at industrial sites to transmit telemetry data on equipment and personnel to central processing facilities and to receive automated proximity alerts of other equipment or personnel for operations and safety management systems; Microwave antennae; Microwave transmission apparatus for delivering radio programs and messages; Radio transmitters; Radio transmitters and receivers; Radio transmitters and receivers for remote controls, radio controls; Remote control transmitter for radio-controlled devices; Satellite and microwave communications apparatus to transmit communications from a vehicle to another vehicle, or from a vehicle to a satellite; Telecommunications transmitters; Television transmitters; Transmitters of electronic signals; Wireless transmitters and receivers