I have a model 250 AIS receiver and it works great. However, as more and more recreational boaters add AIS transceiver to their boats, they don't bother to turn them off while at the marina. As a result when I am approaching a marina and trying to dock, I get alarm after alarm--all from vessels tied to the dock. Can the Model 250 be adjusted to ignore vessels which are not moving or is there another solution?
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