With a little more searching, voila!

5. QST Product Review: Jun 2005 [5.845%]
... and outputs. The CW keying, data and CAT (computeraided
transceive) cables ...
a.. http://www.arrl.org/members-only/prodrev... - 490356 bytes
[application/pdf] - Mon, 25 Apr 2005, 12:39:23 EDT