[Milsurplus] AN/ARN-1 vs. AN/APN-1

[J. Forster]

On the APN-1/ARN-1 MS connectors were not used on the RF input or output. As
many have said, the most common were UHF, but something like a TNC or amplifier
klystron connectors were used on some. The example I had was donated to a local
museum. I picked it because I had no mating connectors and because it was Navy.

The APN-1 had two ranges, 0 to 400 ft and 0 to 4000 ft. The indicators have
little windows and the scale markings change behind them. There is one on eBay
right now:

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=585&item=2249768270&rd=1&ssPageName=WDVW

The scales are positioned on the 0 to 400 ft range.

-John


WA5CAB at cs.com wrote:

> Group,
>
> Without intending to get into any position of saying what was or was not used
> as the RF connector on any particular AN/ARN-1 (because I have never seen any
> of them), I'll say that (a) I have now ID'd at least four different RF
> connector groups or families based upon the AN connectors (in shell size 12S,
> 14S, 16 and 18).  SO-246 (AN3102-12S-4P) in particular, aside from gender,
> would look from the side very much like a TNC.  All but one group (the 18
> shell size) had various PL- and SO- Signal Corps nomenclature at least as
> early as 11/43.  Most also had British and Navy numbers.  And (b) according to
> my database (I didn't record the original source), there was an RT-2/ARN-1 and
> an RT-3/ARN-1, both described as single-range to 4000 feet.
>
> In a message dated 6/11/2004 6:01:19 PM Central Daylight Time, jfor at quik.com
> writes:
>
>> Well, aside from the one or two range issue, which appears to be
>> uncontested, at
>> least one of the ARN-1s used non-UHF connectors.
>>
>> -John
>>
>> Mike Morrow wrote:
>>
>