MRATHS

is the Malvern Radar amd Technology History Society. I shamelessly  borrow this image of the men and a couple of women who developed what we now call Electromagnetic Warfare - from a fascinating talk on the subject this evening. I particularly enjoyed the reference to the 'Sunday Soviet' gathering to share research and development ideas as the precurser to today''s trendy agile development methodology. And learning about Russian signal jamming in 1904. 

More at  https://malvernmuseum.co.uk/tre/