Ham Radio KITS - TOP PAGE - Washington Island BOOKS

September 14, 2015 - back in stock, thanks for waiting

May 21, 2014 - Bug Descratcher III kit

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press the Add to cart button at the left to put a Bug Descratcher III kit in your Paypal shopping cart

The Bug Descratcher III kit is the third version of a circuit from the September 1992 issue of QST by WX7G, Dave Cuthbert. The Bug Descratcher III removes the "scratchiness" encountered with semi-automatic keys (bugs) due to contact bounce. It can also be used with straight keys. It features:

[Bug Descratcher III circuit board picture - 
click for larger version]
  • a debounced output to eliminate scratchy sounding keying
  • optional solid state relay (SSR) output to key nearly any rig (solid state, tube positive or tube negative keying voltage)
  • available as a board only kit
  • board size: 1.25 x 1.5 inches
  • operates from 9 to 13.8 volt battery or power supply
  • minimizes the input to output delay (previous versions had about 6 mS of delay)
  • price is $12.00, add the SSR option for $4 more, + shipping/handling
  • printed documents are NOT included, please print/view your own from the pdf files provided


  • For pricing, availability or any other questions, please send an email to me, Chuck Olson, WB9KZY at:



    with your question or the items you want and we'll email you a Paypal invoice

    Kit Documentation: download (Right click/save target as) and print the Bug Descratcher III kit manual , schematic diagram and hookup diagram all in Adobe Acrobat (.pdf) format.
    Here is a simple diagnostic test file in case of trouble.

    To purchase the Bug Descratcher III 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!
    OR to pay with a credit card use the Paypal shopping cart buttons below.

    options
    press the Add to cart button at the left to put a Bug Descratcher III kit in your Paypal shopping cart
    Pay me securely with your credit card through PayPal!
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    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 or the items you want and we'll email you a Paypal invoice.

    Ham Radio KITS - TOP PAGE - Washington Island BOOKS