FYI, Photos show X/Y antennas on He 111s etc. But Ju 88 A-4 (as much used in Britains bombing up to 1944) had their antennas "intregal" (recieving antenna was external under rear fuselage!): the FuBI antenna, only having special amplifiier to they Lorenz apparatus internally.
Not that is specificly belongs here, just curiously, I discovered by resarching "mysterious" antenna on a very famous bird. Period is spring 1943, so was USAAF also using beams
http://scout.com/military/warrior/Ar...elle-101458766
-Ed