Over the past few months I've read two superb books on British and German Electronic Warfare and Radar in WW II.

"Instruments of Darkness - The History of Electronic Warfare 1939-1945" by Alfred Price

This book goes into significant details of the British and German systems.

"Instruments of Darkness" references another book....

"Most Secret War - British Scientific Intelligence 1939-1945" by R. V. Jones.

Dr. Jones was the Assistant Director of Scientific Intelligence in Britain during WW II.   This 550 page tome is absolutely fascinating.  While doing an excellent job of discussing the British and German systems, it also presents the continuous flow and dynamics of how the British and German systems evolved to counter each other as the war progressed.  It also provides a lot of ancillary information of why things were done the way they were done from a first hand perspective.   Lots of maps and diagrams too.....

Both available from Amazon.

73 Mark K3MSB