[GreenKeys] Grey TT-4A

[Jim Haynes]

On Fri, 6 Jan 2012, Nick England wrote:

> I can't find any listing of TT-4's or TT-4A's in the USN docs that I
> have. The Naval Electronics Supply Office didn't think they had to

I imagine, in the military scheme of things, TT-4 is specifically a
Kleinschmidt KSR machine painted green and in the waterproof carrying
case.  But the same mechanism painted other colors and given other
nomenclature turns up in other contexts.  And it doesn't have to be
Navy to be gray.