This design made the first place in the 2019 QST Key Competition, category “Paddle”
(See 2019 October QST for all winners)

  • Solid metal construction
  • No mechanical contacts

Click below to download the complete set of documentation that was submitted to the ARRL for the contest. If you are planning to build this keyer you can also contact me for more information.

  1. Opto-Keyer description
  2. Opto-Keyer drawings
  3. Opto-Keyer assembly
  4. Opto-Keyer (German)

For comments or questions, please contact Juergen Malner, Email: jumalner at gmail dot com. Use subject “HCRA – Opto-Keyer”. Thank you.