[Milsurplus] Submini tubes.

[Mike Morrow]

Gene wrote:

> For a good book on the developer of the proximity fuse and his role
> in RADAR and the Manhattan Project (including of arming Little Boy....
> ... read: Target Hiroshima: Deak Parsons and the Creation of the
> Atomic Bomb by Al Christman.

Does he mention the use of four RT-34/APS-13 night-fighter tail proximity warning radar sets on that bomb, modified to separate the operating frequencies, in a two-out-of-four voting scheme to trigger the air burst at about 1900 feet?

The RT-34/APS-13 tail warning radar used to be very common in surplus.  The Germans apparently quickly caught on to it and could use its transmitted signal to locate the aircraft in which it was operating.  Thus the actual service life of the system was short before it was withdrawn.

Mike / KK5F