Not a schematic, but how about a kit?
http://www.idiompress.com/cmos4.html

----- Original Message -----
From: "Jim Barnard"
Newsgroups: rec.radio.amateur.homebrew
Sent: Monday, May 14, 2007 7:03 PM
Subject: Homebrew Keyer


Does anyone have a schematic for a nice homebrew keyer that can be made
for a reasonable price. I would like to make my own.
Thanks,

Jim Barnard, KI4VGK