Does anyone have a copy of this article? I want to build the Tow Tone Generator described in it using a FAR Circuits PC board. ARRL HB CHP25 FIG.51 (88-91) AND CHP25 FIG.39(>93) 73, Bill ===== Bill Smith KO4NR __________________________________ Do you Yahoo!? Yahoo! Finance: Get your refund fast by filing online. http://taxes.yahoo.com/filing.html