Adrian VK6TUX has released an MP3 recording of some comparison tests he has conducted between D-Star and analogue FM on 2m/145MHz over a 40km path.
Adrian writes: “Done with VK6AWO Steve. We found DV mode to have good readability after FM analogue contact was lost. The lack of noise or interference(esp near power lines etc) is spooky & unusual for radio transmission, and is a big plus for the mode. All other files associated with the test are at files section of; http://groups.yahoo.com/group/vk-dstar/ ”