It was converted from the MD380-90_All_AU_DMR+analog Comprehensive Australian codeplugs which was developed for the for TYT MD-380 and MD-390 as originally developed by Matt, VK2MRC for the GSTARS (Goulburn and Southern Tablelands Amateur Radio Society). This codeplug was originally built for the Baofeng DM-1701 and has been further enhanced, with minor modificaton, for any of the TYT type DMR handhelds which support 3000 channels and 64 channels per zone.