Yaesu FGPS-2 GPS Antenna Unit Provides GPS Data works with VX-8DR, VX-8R, FTM-350R, FTM-350AR - Yaesu USA Original GPS Antenna Unit provides GPS data. VX-8R: Can be attached to the radio using the MH-74A7A microphone OR w/ the CT-136 Adapter. FTM-350R: CT-133 & CT-136 are required when using the external GPS Antenna