On Mar 1, 2009, at 1:58 PM, Jim W7RY wrote: With today's modern rigs, there is no excuse for not using FSK. 73 Jim W7RY ____ You mean not to use AFSK? My AFSK setup is simplicity in both hardware interface and use. A poorly adjusted AFSK signal is very obvious. A properly adjusted one can't be distinguished from FSK. 73 - Steve WB6RSE