144Functions Used As NeededSet ModeTipTo use the SCU-18, install a dedicated driver to the PC. For downloading the dedicated driver andinstallation manual, please go to the YAESU website homepage (http://www.yaesu.com).Connecting the FT1DR/DE to external devicesPosition information data can be exchanged between commercially sold GPS receiversor other external devices by using the optional Data Cable (CT-170) or the Data Cable2.5 (CT-176).CT-170 (option)TipConnect the Data Cable (CT-170) and the Data Output Cable (CT-176) by referring to the instructionmanual for the GPS device to be used, and cable specifications on the next page.Data Cable (CT-170)g RXD (Serial data input [FT1DR/DE ExternalEquipment])a RXD (Serial data input [FT1DR/DE ExternalEquipment])h TXD (Serial data output [FT1DR/DE ExternalEquipment])b TXD (Serial data output [FT1DR/DE ExternalEquipment])k GND c GND