The Bug Descratcher III kit is the third version of a
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:
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
schematic diagram and
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
to let your browser do the math!
OR to pay with a credit card use the Paypal shopping cart buttons below.
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.