[Milsurplus] History Chan - Pathfinders

[J. Forster]

The difference is  the RF connectors (the APN-1 uses UHF, the ARN-1 something wierd,
akin to TNC) and the APN-1 has 2 altitude ranges, the ARN-1 only one. There are two
indicators, one single range, one dual range also.

-John

William Donzelli wrote:

> > The ARN-1 and APN-1 are Radio Altimeters, and are essentially identical. One was
> > Navy, one Army.
>
> I have seen AN/ARN-1s and AN/APN-1s with Navy tags. I think the big
> difference is in the connection to the autopilot.
>
> William Donzelli
> aw288 at osfn.org