Joel, I've been using an NEC UltraLite SL25 with no problems. It's only a 386 25mhz but works fine for TR. I use parallel port CW keying and control my Icom 706. Paul NG7Z --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.377 / Virus Database: 211 - Release Date: 7/15/2002