[ARC5] Data tags and contract delivery dates

[gordon white]

   My research showed that the SCR-274N was superseded in the ETO by the 
SRC-522 fairly early for actual plane to plane use, particularly in 
fighters, but remained in bombers for a long time, in fact in the 1970s 
I flew in USAF planes that still had the BC-453 receiver for use in 
less-developed parts of the world.

    Some where I wrote about the A.R.C. people going to Europe in 1943 
or 1944 to look at usage of the equipment and particularly the problem 
of tuning receivers - which led to the "lock tune" arrangement that 
eliminated the pilot cranking the set with the cable control.

    However, the AN/ARC-5 version was used longer in the ETO and 
extensively in the Pacific, being a Navy purchase.

    But I found it amazing how long the TRF sets,  RU/GF, SCR-183/283 
etc., were produced. They went into earlier aircraft that were set up 
for the pre-war equipment. In fact, into the 1960s foreign air forces 
were still buying that gear from U.S. surplus dealers.

          - Gordon White