[Milsurplus] Navigation System

[William Donzelli]

> I guess I'd tend to put the AN/ARN-6 in the same category as the
> AN/ARC-2, the AN/ARR-15, the AN/GRC-9, etc. and maybe even stuff like
> the AN/ARC-1 and AN/APX-6. 

The developmental models were perhaps out (the XA, XN, and
Xothers). The run of AN/ARR-15 (XN-1) was built in 1944 or 45 likely doing
trials.  

> I'm thinking, but have no proof, that the AN/ARN-9 may have been the
> last version of the USN's short-lived "Air-Track" ILS.  I need to find
> a manual for it somewhere, but several years of searching for AN/ARN-9
> info has produced only one picture of the ID-24/ARN-9 cross-needle
> pointer.  I'd like to find out more about the ZAX too.

Every bit of AN/ARN-9 I have seen or have is just a badge engineered ZA.

William Donzelli
aw288 at osfn.org