Caution: This is a work in progress. Be alert for changes and/or bug fixes.      There is very little original work here. I've shamelessly copied from QST, Solid State Design for the Radio Amateur, and the ARRL handbook. See the references on the schematic. The full text of a recently published article in April 2000 QRP Quarterly is available in PDF format on the QRP-ARCI technical and project pages.

                                                                                              72,  Jim N5IB

HTX-10 with J-38 key and N5IB cw adapter
(130 K jpg)

Manhattan layout of cw adapter (112 K jpg)

Back to N5IB home page