AN/GSO-221

From: Joe R. <rigdonj_at_cfl.rr.com>
Date: Thu Apr 22 07:09:44 2004

At 07:56 PM 4/21/04 -0700, Zane wrote:
>> Oddly compelling auction:
>>
>>
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=1247&item=4125610204&
>> rd=1
>>
>> Anyone know exactly what he's got?
>>
>> Ken
>
>That description is pretty much worthless. The military has put a lot of
>32-bit Hardware in 19" racks over the years. Unless someone knows what a
>AN/GSO-221 is, or for that matter what the "GSO" stands for....

  AN stands for joint Army Navy Specification.
   The first letter indicates the installation location and G stands for
Ground Equipment (General)
   The next letter indicates the type of equipment and S means special or
combination equipment.
   The third character indicates the items purpose but O is not listed as a
valid character. In fact, I think O may be a typo since they usually avoid
using O in reference designations to avoid confusion with the character 0
(zero). (Same with I and 1).
   The numbers should indicate the position of that item in the sequence of
similar items but without knowing what O means then we can't guess at much
other than the fact that there have been 220 items of a similar nature. Oh
and it's most likely produced in the US. The US uses low numbers (0 to
500), Canada, the UK and other countries use higher range numbers (500 to
599 and 2200 to 2299 for Canada and UK, respectively).

>
>It could simply be something like a HP 9000/750.

   That's exactly right.

  MORE:

   I did a google search and found this
<http://216.239.39.104/search?q=cache:r1iKgOE1QIsJ:www.thenostromo.com/archi
ves/mp-gg/1997-07/msg00051.html+%22an/gso%22&hl=en&lr=lang_en>. Part of
this radio system is an AN/GSO-187. That will give you an idea of what the
AN/GSO classification is used for.

    Joe
Received on Thu Apr 22 2004 - 07:09:44 BST

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