Yes. An antenna splitter allows you to use your current VHF antenna instead of fitting another one which will generally lend itself to an easier installation. There are trade off's between using a splitter and having a dedicated antenna for your AIS system, read more about that in the previous FAQ.
If you decide to use a splitter, be sure to get one designed for use with your AIS system. A receive only splitter differs in functionality from a splitter that also allows you to transmit on the AIS path. Damage to either your VHF or your AIS equipment may occur if you use a splitter not well suited to your AIS system. If you have a transponder you must use a splitter designed specifically for use with AIS transponders, like our SP160 Antenna Splitter.
The Cortex M1 Hub has an integrated splitter so you can share your existing antenna with both the Cortex and an existing VHF system onboard, for ease of installation and added onboard systems redundancy.