Blue Yeoman was the AMES Type 85, an advanced version ofOrange Yeoman (q.v.) 3D tactical control and early warning radar. Originally designed by Associated Electrical Industries, AEI was taken over by Marconi in 1967.
Blue Yeoman was designed to possess a high power and anti-jamming capability. The radar was proposed forViolet Friend ABM system. The Type 85 was essentially a Blue Riband transmitter mounted on an Orange Yeoman aerial.
Blue Yeoman operated at 10cm at 2.75 / 3.25GHz with peak power of 54MW, a very powerful radar.
Thanks to David Mackenzie for the passing on the Photgraph of a Type 85 from the museum at RAF Neatishead. This photo is Crown Copyright.
Guided Weapons or Radar or Colour Codes