[Milsurplus] request for assistance

[Tom B]

Hello All,

>"KY" has nothing to do with crypto gear - it just means "keyer" - in the 
>AN/ system. Most "KY"s are used in either radar or FSK (and Teleprinter) 
>applications. A few were probably crypto-like, but they were the 
>small minortity.
>
>Some things that start with "K" are indeed crypto, but these fall under
>the TSEC/ category (for example, his box might be TSEC/KY-95) - a different
>nomenclature system that, for obvious reasons, is not well documented
>publicly. 

The TSEC nomenclature system and others are explained here:
http://www.designation-systems.net/usmilav/miscsystems.html

Tom Bryan