There were still problems to be overcome. For instance,
it was normal practice for bombers to switch on their
H2S sets soon after take off. The Germans soon learnt
(November 1943) to monitor and track these emissions
and they were using this advantage to predict the likely
target for an Allied raid and thus get their fighters
airborne and ready to intercept. The German interception
equipment was code named 'Naxos'.
Improvements to the system continued; and the scanners
were soon gyro-controlled giving the operator a greater
field of scan, particularly from behind the aircraft.
Eventually, the bombsite computer was also linked to
the H2X unit and this improved the 'blind bombing' accuracy
considerably. It was the Mk 6 version of 1944 that was
renamed H2X. This equipment was also adopted and adapted
by the USAF 8th Airforce and was called 'Mickey.' Of
the 400,000 tons of bombs this unit dropped over the
last 2 years of the war, over 50% used this targeting
system.
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