Triambic Keyer by Mike Rhodes, G4FMS

Errors and oversights found in the original drawing from Practical Wireless, February, 1985. These have been corrected in the drawings above.

• IC4B output, missing pin number. Pin 4 should go to IC1B-2, IC1C-12.
• Reference Designator IC3A used twice. Gate driving IC5-3 should be IC3C.
• IC5 output, missing pin number. Pin 14 should go to IC6B-6, IC3B-2.