I found my GPS

I finally solved the problem with my Raystar 125 GPS.  The trouble was embarrassingly trivial; I had swapped two leads on one plug in the lazarette of the boat, where testing it was very awkward.

After I straightened it out, the whole suite of electronic navigation devices started to operate.  

I see a green flashing light on the LED for the GPS; I see a green LED on the front of the AIS.  I see periodic data flashes on the NMEA multiplexer, indicating that it sees data on one of its channels.  I see a flash on the AIS light on the VHF antenna splitter, about every 5 minutes or so, indicating that it is transmitting my position and vector.  I can see the ship's location on the screen of the VHF, which implies that it is prepared for emergency message transmissions.

The radar scanner is still at the repair depot, but I can receive and transmit AIS data.  Among other ships, I can see that of the Charles W Morgan, which is moored 6 miles away at her pier in Mystic, testing her navigation equipment in preparation for the start of her 38th voyage tomorrow. I can see my own location and vector on the Web site "Marine Traffic", which intercepts and displays the locations reported by AIS.

I have not moved from the pier, but my location is displayed correctly on the chartplotter.

When the rain ends later this weekend, I will load the hotel supplies on to the boat and commission the water system.