As a result of the increasing volume of air traffic it has become apparent that a need exist for a device operated on board the aircraft to warn the pilot of other aircraft that may pose a potential collision. Our objective is to develop an inexpensive TCAS I system (advanced technology airborne traffic alert and collision avoidance system) that meet "all" of the FAA TCAS I requirements as per rtca/dc-197. ACOM Microwave plans to develop, test, manufacture and market the device.