Klein Heidelberg: New information and insight

Klein Heidelberg was a German WW2 bistatic radar system that used the British Chain Home radars as its illumination source. A paper published in 2010 presented information from previously-classified sources on its origins and performance. Subsequently, some further information has been found, in particular concerning the dates by which the different KH stations become operational, and their performance. The purpose of this paper is to present and discuss this new information.