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2/ Televideo Keyboard For Model 925 Dumb Terminal:
http://cgi.ebay.com/Vintage-Televideo-Keyboard-For-Model-925-Dumb-Terminal_W0QQitemZ370357841977QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item563b0c3039 (http://cgi.ebay.com/Vintage-Televideo-Keyboard-For-Model-925-Dumb-Terminal_W0QQitemZ370357841977QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item563b0c3039)
Show Image
(http://geekhack.org/attachment.php?attachmentid=9040&stc=1&d=1270948799)
I have this one. It does have double-shots. However, it also has some issues:
1) Non-tactile, heavy, linear switches. 20 quarters gets you halfway to the bottom.
2) Silent action all the way down, with a soft ping only when you release the key.
3) RJ11 jack that won't connect to your PC.
4) Big plus-shaped stems that are annoyingly incompatible with any modern switches.
Not recommended. I would bet the other two are similar.