High-speed D-STAR replaces AX.25 Packet

It is reported that the Amateur Radio team supporting the Medtronic Twin Cities Marathon has officially retired AX.25 packet in favour of High Speed D-Star DD Mode

The Amateur Team have used D-Star DD Mode for three years and have five Icom D-Star RP-1D access points installed on Twin Cities building rooftops. These have been 100% reliable, including at the unusually warm 2007 race, where more than 50 runners were sent to area hospitals.

D-STAR at the 2007 Medtronic Twin Cities Marathon
http://www.arrl.org/news/features/2008/03/01/2/?nc=1

D-STAR Introduction
http://dstar.rcares.org/DSTAR_Introduction.pdf

D-STAR Disaster Communications
http://dstar.rcares.org/DSTAR_Disaster.pdf

D-STAR Emergency Digital Voice Data
http://dstar.rcares.org/DSTAR_Emergency.pdf

Thanks to Mark Thompson WB9QZB for the above information