Original description from RAF Museum page: 'Chain Home: WAAF radar operator Denise Miley plotting aircraft on the CRT (cathode ray tube) of an RF7 Receiver in the Receiver Room at Bawdsey CH. Her right hand has selected the direction or height finding and her left hand is ready to register the goniometer setting to the calculator.' RAF Bawdsey was originally an experimental system set up at Bawdsey Manor, home of Robert Watson-Watt's radar development team. When the team was moved away from Bawdsey, the radar station became a part of the operational Chain Home (CH) network. The main display is
Original description from RAF Museum page: 'Chain Home: WAAF radar operator Denise Miley plotting aircraft on the CRT (cathode ray tube) of an RF7 Receiver in the Receiver Room at Bawdsey CH. Her right hand has selected the direction or height finding and her left hand is ready to register the goniometer setting to the calculator.' RAF Bawdsey was originally an experimental system set up at Bawdsey Manor, home of Robert Watson-Watt's radar development team. When the team was moved away from Bawdsey, the radar station became a part of the operational Chain Home (CH) network. The main display is a large CRT, partially masked off by a metal box so only the lower half of the CRT remains visible. In earlier versions a scale running across the top of the opening allowed the range to the target to be measured. In this later version, a knob is used to move a cursor line across the screen to lie over a selected return. The cursor is driven by the same timing electronics as the rest of the radar, ensuring it is properly calibrated at all times. The large knob on the left of the image is the goniometer control. Unlike later systems, CH used separate transmitters and receivers. The transmitter broadcast a semi-directional signal in front of the station, known as the 'line of shoot', filing space with the signal. The receiver was a radio direction finder that searched that space for echoes. The goniometer knob changed the directional sensitivity of the receivers, allowing the angle to the target to be determined. This was a trial-and-error process of hunting for the maximum (or minimum) return in a noisy signal. Like most RDF systems, the antennas were equally sensitive in two directions; the small push-button to the upper left of the knob, the 'sense button', mutes down one of these directions to determine which one is correct. This button is not visible in the cropped but higher quality version of the image seen here, it can be selected below. A series of switches n
Size: 2570px × 1945px
Photo credit: © piemags/archive/military / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: 2, conflict, military, war, world, ww2
