[CA] [CA11] AIS Lost Connection (C90W C12OW C140W)

[Chuck - Raymarine - Moderator]

Welcome to the Raymarine Forum Brandon,

The reported symptom would not typically be caused by use of a third party AIS receiver/transceiver. C-Series Widescreen MFDs do not feature support for multiple sources of any one type of data within a system. This issue most commonly results from operating the MFDs with early software and/or having more than one source of GPS data within the system or a GPS data source which is intermittent. In this case both C-Series Widescreen MFDs feature internal GPS receivers. Should you desire to use the receiver within one of these MFDs as the system's source for GPS data, then it would be recommended that you ensure that its installation location has afforded the MFD an unobstructed view of the skies overhead. The internal GPS sensor of the other MFD should be configured OFF. If the system has been interfaced to an external GPS sensor, then the internal GPS receivers of both MFDs should be configured OFF.

The reported issue may also occur if the only AIS target within range is on the edge of reception range, causing reports to be intermittent. In the case of the latter, it would be recommended that the AIS dangerous targets alarm be configured OFF until the situation abates.