Gwinnett Techfest This year's Techfest, as always was packed full of people coming to see about the different aspects of Amateur Radio. Robin Cutshaw AA4RC and Ed Woodrick WA4YIH were on-site helping people understand D-STAR Posted by Admin Wednesday, January 12, 2011 6:42:00 PM Categories: D-STAR DVAP DVDongle Hamfests