This Trainer Cord is for the Airtronics Line of Radios. This trainer cord is compatible with Radiant, VG4R, VG6DR, VG400, VG600, VG6000, RD6000 Sport, RD6000, RD6000 Super, and the RD8000 other radio is used as the "student" radio. INCLUDES: One 5" Long Airtronics Trainer Cord upkzh 7/15/98 ir/jl