My review of the SH 2100 is great. Awesome (once I got it working in my post above).
The AIS works very well. Can see the targets on the unit, or on the chart plotter.
Radio is very clear, loud, huge display, lots of information when hooked to gps plotter.
nice features with the DSC
. Built in fog
horn is a nice touch when hooked up with a hailer speaker. PA feature when hooked up with the speaker.
But with SH having a lower output on the AIS port, it can be troublesome to get it to work. But once you get over that hump, it is pretty awesome.
One huge downside. You can only program the MMSI number ONCE. If you sell the radio, or if the next owner wants his own MMSI #, or you enter it wrong by accident
when setting it up, it MUST go back to the factory to be reset.