Institute of Radio Engineers.Professional Group on Human Factors in Electronics Institute of Radio Engineers.Professional Group on Communications Systems Institute of Radio Engineers.Professional Group on Microwave Theory and Techniques Institute of Electrical and Electronics Engineers.Professional Technical Group on Human Factors in Electronics Institute of Radion Engineers.Professional Technical Group on Military Electronics Institute of Electrical and Electronics Engineers.Professional Technical Group on Human Factors in E Institute of Electrical and Electronics Engineers.Professional Technical Group on Military Electronics