Standard Horizon SCU-38 GPS antenna for Standard Horizon GX1400GPS, GX-1800, GX-1850, GX-2200, GX-2400 VHF mobile marine radios.
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.
*Please note that the SCU-38 is a passive antenna and will only work with units already equipped with a built-in GPS receiver.