[MRCA] [Milsurplus] 1155, now ATR dimensions

[Mike Hanz]

On 7/8/2012 12:05 AM, Mike Morrow wrote:
> The USN and USCG used the AN/ARC-1....
> I always thought it was WECO's
> work, a logical progression from their WE-233 (RT-19/ARC-4) in the identical
> package.  Perhaps WECO can take credit for setting the standard ATR dimension
> with the RT-18 and RT-19.


They may have had an influence on it, but in the back of the 1942 
Sandretto book on Aeronautical Radio Engineering, there is a series of 
drawings on different size ATR packages, courtesy of Aeronautical Radio 
Incorporated (ARINC).  They generally get the credit for establishing 
the system, based on research of industry needs in the late 1930s.  
http://en.wikipedia.org/wiki/ARINC has more.  It is amazing that the 
system has lasted so long.