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Explanation of Different AIS Equipment
AIS Transponders
An AIS transponder receives and translates the AIS digital radio signals. It also sends AIS signals, making vessels visible to others with AIS equipment. There are two types of transponders, Class A intended for SOLAS vessels and Class B for fitting on non-SOLAS category vessels. AIS transponders are also known as transceivers in the marine industry.
AIS Receivers
An AIS receiver operates similarly as a transponder but is a receive-only device. A ship with an AIS receiver will display vessels in the area but not transmit AIS data to other boats in the area.
AIS Display
An AIS display can be a chartplotter, computer, or mobile device if the AIS transponder or receiver is Wi-Fi-enabled via iOS or Android apps. A dedicated display allows critical safety information to always show at a glance and may include additional features.
AIS Aerial/Splitter
A dedicated AIS aerial is used only to pick up and transmit AIS signals. Installation of an AIS/VHF splitter shares an existing VHF aerial between the VHF radio and AIS transponder or receiver.