Hi, Chris, Heil makes a conversion kit for the D-104. I am using it and have had great results. If you would like more information, please see my eHam review at http://www.eham.net/reviews/review/65769 73, John, WA6L -- View this message in context: http://elecraft.365791.n2.nabble.com/D104-mic-tp5276371p5276520.html Sent from the Elecraft mailing list archive at Nabble.com.