Hi Matt, APRS stands for Automatic Positioning Radio System I believe. Basically it is a system that allows you to know your position any ware in the world by using signals from satellites. God loves you! My personal prayer book. Add your prayer or pray for others at the following link. http://prayerbook.homewithgod.com/cgi-bin/prayerbook/multi.pl?131961113534708:24:0 http://lists.topica.com/lists/funhamradio. http://groups.google.com/group/funhamradio-list http://funhamradio.bloki.com ----- Original Message ----- From: "Matthew Chao" <[log in to unmask]> To: <[log in to unmask]> Sent: Saturday, March 18, 2006 1:49 PM Subject: Re: Suggestions for Tri-band (2meter, 220, 440 Mobile/base Rigs > Excuse me for asking, but what is APRS?--Matt. >