Yaesu FGPS-2 GPS Module for VX-8DR & VX-8R, FTM-350R, FTM-350AR Transceivers This is the Optional GPS module for select Yaesu Vertex Transceivers. For the Yaesu VX-8DR & VX-8R HandHelds, FTM-350R, FTM-350AR mobiles. Requires Optional CT-136 or MH-74A7A for hookup to VX-8R & DR. Allows for APRS operations. Genuine Yaesu Vertex item. Check radio owners maunal for Compatibility.