9 Radar; Radar antennas; Radar apparatus; Radar apparatus for use in navigation; Radar displays; Radar installations; Radar instruments; Radar jamming apparatus; Radar receivers with amplifiers; Radar transmitters; Passive sensors (other than for medical use); Air traffic control apparatus; Antennas for the reception of electromagnetic waves; Military electronic apparatus, namely radar receivers, transmitters, masthead and computer display screen, for use with military applications