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Old 24th Apr 2021, 3:26 pm   #6
Hartley118
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Join Date: Aug 2015
Location: Cambridge, Cambs. UK.
Posts: 2,196
Default Re: Possible Vintage Radar Set

It's difficult to do detective work without being able to see any labelling on the controls. Can you see any clue as to control functions?

If it is an early radar display, then the rectangular graticule suggests a simple 'A-scan' picture with an X-Y plot where the target range runs along the X-axis and received 'blip' signal strength on the Y-axis. This was the type of diplay used in the Chain Home radars in WW2.

A-scan was superseded by the more familiar rotating PPI (plan-position indicator) display with a rotating antenna synchronised to a rotating display with range shown realistically along the scan radius and signal strength controlling spot brightness. A circular graticule would then be normal.

Do you have any evidence that we might be looking at an early radar, or is it more likely a home-built oscilloscope, perhaps converted from a military display? Photos of what's in the grey box would no doubt give us some interesting clues.

Martin
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