[Milsurplus] History Chan - Pathfinders

[J. Forster]

Yes. I donated a Navy version to a local museum and both the Rx/Tx and an antenna had the
same oddie. It looked like a slightly larger version of that used in some amplifier
klystrons. Perhaps it was for some type of hard line.

I have both indicator types. There is only one type of Altitude Limit Switch, AFAIK,
except for a post war repackaged version to mount with the rectangular aviation panels.

-John

William Donzelli wrote:

> > 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.
>
> Are you sure about the connectors? The few AN/ARN-1s I have seen have all
> used standard UHF connectors. Even the AYD (precursor to the
> AN/ARN-1) uses UHF connectors. Maybe you have something weird?
>
> You are correct about the indicator, of course.
>
> William Donzelli
> aw288 at osfn.org