Ham Radio KITS - TOP PAGE - Washington Island BOOKS

Sold out 1/17/2005) - Touch Paddle kit

Please email:

if there are any questions on this kit or if you are interested in having the kit revived.

[Touch Paddle circuit board picture - click for larger view of board ]

  • Simple, conductivity based circuit
  • Powered by your keyer
  • low power consumption
  • Small (roughly .7 by 2 inches)
  • all board mounted parts supplied
  • just add your metal case, connector and/or cable
  • Fits perfectly in an Altoids tin
  • Unique, plastic cover for contact area supplied (not shown)

  • Download the manual and schematic

    Q & A

    Is this kit the equal of a $500 craftsman made paddle ?
    NO ! But don't your non-Morse-using friends give you a sick look when you explain how much you've spent on two momentary contact switches ? The Touch Paddle kit is perfect for situations where you don't want to expose your favorite paddle to possible damage/theft. It's also a great gift for the Morse operator to be.

    Does the Touch Paddle kit solve the age old "dry fingers during the winter" syndrome common to touch paddle circuits ?
    No, very dry skin will still not actuate the paddle BUT included with the paddle is a plastic cover which eliminates skin moisture as a problem.

    How is the Touch Paddle kit powered ?
    Unlike many touch paddles, this kit is powered by the pull-up resistors on the inputs of your keyer. The design uses very little current even when key down. Two Schottky diodes couple the pullup voltage to two small value filter caps. A compact, 8 pin CMOS IC is used to sense the paddle closure and to pull the dit/dah keyer inputs low when a touch occurs.

    Downloadable files for Touch Paddle kit

    The Acrobat files of complex diagrams (like the schematic) may not view well on your computer screen - suggestion: use the magnifier to zoom in for better detail or print out the file. (Right click any link below, then select "save target as" to save the file to your PC.)

    touchp3.pdf (12k) - an Acrobat file of the Touch Paddle manual

    touchp.pdf (28k) - an Acrobat file of the Touch Paddle schematic

    Ham Radio KITS - TOP PAGE - Washington Island BOOKS

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