Simple CW keyer (elbug) 30.12.2005 OH7SV
This is a CMOS 4000 series logic based keyer with Dot priority

Circuir diagram
Component layout
PCB artwork

The keyer installed in the JUMA TX1

See also the two small keyers in the same picture. Observe thru-hole IC as a size reference.
The left keyer is a tiny 6 pin PIC design by OH2NLT, the right keyer is a LOGIC design by OH7SV