But if the transponder does not have a valid GPS position, everything grinds to a halt and transponder ceases to send out position updates. A remote AIS receiver can then receive and decode the NMEA sentences and send the data to an AIS display. the boat's MMSI and vessel name) and creates a NMEA sentence or two which is transmitted via VHF at regular intervals (see our FAQ for all the details). Very simply, an AIS Class B transponder takes your GPS position and other data related to your vessel (e.g. Now we have a different answer!īefore describing what's changed it is worth reviewing what an AIS transponder does and how it works.
One question we get asked a lot when customers are looking to buy an AIS Class B transponder is: " can I use my existing GPS instead of needing to install yet another GPS antenna on my rail"? Up until recently, the answer to this question has been " no - you need to use the internal GPS system in the transponder and connect a compatible GPS antenna in order for the transponder to work correctly". GPS data can be sourced from the NMEA 0183 input wires or the NMEA 2000 network. UPDATE: The AMEC CAMINO-108 and CAMINO-108S also support this feature.
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