[Milsurplus] Navigation System

[Mike Hanz]

That's a salient point, but there are mitigating (or at least anomalous) 
factors that tend to mess up the orderly theory.  Issuance of the type 
number was just the first step, and all sorts of examples are around 
with strange timelines - like the AN/ARC-4, which was a 1939 
WE-223/ARINC commercial aircraft simple renomenclaturing, while the Navy 
AN/ARC-1 didn't start seeing deployment until about 1942.  The NAVAER 
list actually ends with AN/ARC-28, but that doesn't mean all those types 
were fielded.  That's why the accompanying notes are important.  The 
well known ARC-21 and ARC-26 sets sat in limbo for seven years while the 
Army and Navy squabbled over details of the specs, but they were finally 
fielded in time for the tail end of the Korean war.

73,
Mike

scottjohnson1 at cox.net wrote:

>It's not odd when you consider the number of the receiver, versus the number of the complete set. that is what indicates the chronology of registry in the JAN system.
>