Ham Radio KITS - TOP PAGE - Washington Island BOOKS

October 10, 2011 - MegaPK-II keyer kit

March 28, 2023 - SSR option is now $7 due to parts price increases

January 2019: kit now includes a solder masked, silk screened circuit board

July 7, 2023 see the Keyer Enclosure Kit to house the keyer kit

The MegaPK-II kit is the updated version of the original MegaPK "chip". The MegaPK-II has most of the features of the original and adds a number of code practice modes which allow the operator to increase both receiving AND sending abilities. It features:

[MegaPK-II circuit board picture - click for larger version]
  • pot or paddle speed control, 5 to 67 WPM
  • optional solid state relay (SSR) output to key nearly any rig (solid state, tube positive or tube negative kerying voltage)
  • board size: 1 x 1.5 inches
  • 5 character ARRL / Signal Corps random code groups, send and receive practice
  • 5 character pseudo-random code groups, send and receive practice
  • common English words and syllables for high speed review (from ARRL)
  • 1 character hear/decode/think/send code practice
  • two 60 and one 120 character memories
  • OR optionally four 60 character memories
  • memories & settings retained without power (EEPROM)
  • Ultimatic or Iambic A or B keying modes
  • beacon mode, variable delay, up to 60 seconds
  • adjustable element weighting
  • variable sidetone frequency
  • command entry eliminates most menus
  • low standby power (about 1 ua with regulator)
  • a 5 Volt, pin compatible chip is available for PK-Basic, PK-2, PK-3 or PK-4 owners who want to upgrade


    • The kit (board plus board mounted parts, no documentation) is $12 + shipping/handling
    Add another $7 for the SSR high voltage keying option to above prices
    add $2 to the above prices for a micropower 3V voltage regulator option

    MegaPK-II chip alone available for $4 + shipping/handling

    Kit Documentation: download (Right click/save target as) and print the MegaPK-II kit manual , detailed building sequence , random code practice listings , schematic diagram and hookup diagram all in Adobe Acrobat (.pdf) format.
    Here are the schematic diagram and hookup diagram for the kit with the optional SSR and voltage regulator.
    Here is a cheat sheet for memory recording and play from Dick Parks, K9LW.
    Here is a Beacon quick start text file.

    To purchase the MegaPK-II kit, print out a Kit order form to figure your order manually
    or try our: javascript order form to let your browser do the math!

    For larger quantity purchases, to combine with other items, for DX purchase price or for any other questions, please send an email to me, Chuck Olson, WB9KZY at:



    with your question

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