Yep the NE602/SA602/SA612 are the same part as far as I know! 73 de Alex NS6Y (KX1 LED still white, just checked!) On Apr 21, 2006, at 3:15 PM, Bill Reid wrote: > The K2 manual lists SA602 for U1 on the control board and the part > number in my kit is SA612. Is this IC OK to install?