RT-34/APS-13 Tail Warning Radar (USA)
The RT-34/APS-13 is a low power UHF tail warning
radar transmitter/receiver which was used in Allied aeroplanes such as the
P51 Mustang and also the P-38L,
P-47D, P-61, P-63, P-82D in
the later stages of the war.
The equipment operates at 420 MHz with a receiver IF of 30 MHz and is powered
by an internal rotary generator which is supplied from the aircraft 27V dc
electro-mechanical construction is all aluminium, and the equipment uses
all miniature glass valves except for the voltage stabiliser which is a VR105V
(0C3). The PA is two 6J6s.
It is believed that a modified APS-13
was employed as a radar fuse for the ‘LittleBoy’ atomic bomb dropped on the
Japanese city of Hiroshima.
APS-13 equipment was manufactured by RCA, Camden, New Jersey, USA under a
1944 contract number 13711:CRV 458-DAY-44.
This equipment example is in excellent
condition and appears to be complete mechanically and almost complete electrically
except for one component.
been cleaned and repaired and is now functioning, except that it is missing one large
It is expected that with time, this equipment will be returned to complete