English Hertiage coastal Britain
A Gun Laying Mark II radar receiving set similar to the ones along the English coast that accidentally detected 55-85 MHz radio emission from the sun in February 1942. This led to a secret report written by J. S. Hey. (photo taken from Army Radar by A. P. Sayer (1950) )
(via http://www.astro.washington.edu/users/woody/hra.html)
