The Standard Horizon SCU-38 external receiver allows your compatible Standard Horizon radios internal GPS receiver to operate even when mounted in an area where the internal GPS cannot receive a signal. Simply connect the SCU-38 and mount the antenna where it has a clear view of the sky. Cable measures 5M long.
The SCU-38 is compatible with the following Standard Horizon radios: GX1400G, GX1800G, GX1850G, and GX2400
*Please note that the SCU-38 is a passive antenna and will only work with units already equipped with a built-in GPS receiver.
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![Standard Horizon SCU-38 Passive GPS Antenna [SCU-38]](http://www.essentialmarineservices.com/cdn/shop/files/94211XL.jpg?v=1702528359&width=1445)