radar history

Jon Elson elson at pico-systems.com
Sat Mar 3 10:41:12 CST 2018

On 03/03/2018 12:46 AM, Chuck Guzis via cctalk wrote:
> I dunno about these historical accounts.
> I was watching a PBS program about RADAR and the magnetron was made out
> to be a super-secret device, yet there's a clear explanation of it in my
> 1942 "Radio Handbook".
I think the British considered it top secret in about 1939, 
but they knew if they did air raids over France or Germany, 
that eventually a plane with one would get shot down and a 
magnetron would be obtained in relatively good shape.  So, 
likely by 1942 it was considered to no longer be a secret.


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