All AIS receivers require a dedicated VHF / AIS tuned antenna to recieve their signals.  With the addition of the Easy Splitter you can make use of your existing VHF antenna.

The EasySPLIT  enables one antenna to be connected to up to 3 devices – for example, a VHF radio, FM radio and the easyAIS. So there is no need to instal a second antenna to run the easyAIS.