Hear are some places to start - thanks for the help and suggestions: RTTY http://www.teleport.com/~nb6z/rtty.htm Getting Started in Digital Communications - Part 3 - RTTY http://www.arrl.org/tis/info/pdf/59241.pdf RTTY Basics by W7TI http://www.geocities.com/mmtty_rtty/files/RTTY-Basics.zip How to Work a RTTY Pileup by W6/G0AZT http://www.n2hos.com/digital/eddie.html There is also the ARRL HF Digital Handbook and the ARRL Operating Manual. 73 - Jim AD1C p.s. everyone PLEASE read Eddie's treatise before the Kingman DXpedition starts! -- Jim Reisert AD1C <jjreisert@alum.mit.edu> http://www.ad1c.com -- WWW: http://www.writelog.com/ Submissions: writelog@contesting.com Administrative requests: writelog-REQUEST@contesting.com Problems: owner-writelog@contesting.com