Bill, AB1AV, pointed me to the site I was thinking of, by WA3WSJ. I apologize for not mentioning him, his site just didn't show up when I was searching today. http://www.wa3wsj.com/KX1.html http://www.wa3wsj.com/KX1-12vPower.html Jim, KR1S http://qrp.kearman.com/