[Milsurplus] [Boatanchors] maybe a relay?

[David Ross]

It is a polar relay, used with teletype gear.  Also used in old-timey 
crypto gear as a mechanical exclusive-or gate.

See photos of the innards here:
<http://www.prc68.com/I/Telegraph.shtml#255A>

Dave Ross    N7EPI



On 3/27/2011 10:33 PM, Ray wrote:
> I have a black sealed vertical mount item, 3 in diameter, and 6Inches high.
> It is a plugin with 8 pins  (2 rows of 4).
>
> It is manuf by Kurman Electric Co. Inc.  Manuf part number P255A and it also
> is marked
> Signal Corps Stock number 4 TRY 30
>
> anyone have any ideas?   a web search did not help with the part number but
> yielded a few hits on the company but no Joy
>
> Ray
>
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