Category: AIS

Class B AIS, the name game 12

Class B AIS, the name game

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This weekend I’m working on a PMY column about Class B AIS, and now have three transponders up and running, which you’ll hear about it. But I also went over my notes and audio recording…

Class B installs #1, Brookhouse solution 5

Class B installs #1, Brookhouse solution

Brookhouse AIS B transponder solution

A nice thing about Class B AIS transponders, I think, is that by regulation they include a GPS and thus they deliver “own vessel position” along with AIS target info to whatever displays they feed. But that can present an issue if…

AIS Class B, really on the map 6

AIS Class B, really on the map

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Check the stats! They indicate that at one moment earlier today one particular network of AIS coastal receivers was seeing 763 AIS Class A transponders from scattered towers around the U.S.  And one Class B.  Guess whose 5 meter pleasure (and electronics testing) vessel that was?

NMEA new guy, Digital Yacht 4

NMEA new guy, Digital Yacht

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The one-day product exhibit at the NMEA Conference is never long enough for me, and I hope the manufacturers I missed—often the ones I know the best—took no offense (you know where to find me!). I put particular focus on companies appearing at NMEA for the first time, like Digital Yacht above…

Icom AIS receiver, and more on Class B 29

Icom AIS receiver, and more on Class B

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What with Class B AIS transponders finally coming to market, a new AIS receiver may seem irrelevant. But it’s from Icom, it seems to be designed and priced right, and I suspect that it will be a winner…

Invalid MMSI numbers, a real problem 10

Invalid MMSI numbers, a real problem

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The above (bigger here) is clipped from an interesting report on MMSI “anomalies” that dropped into my e-mail box. It makes a good case for why the FCC decided that Class B AIS devices should have their MMSI numbers input in a controlled way, and…

Class B AIS here?, but worthless? 36

Class B AIS here?, but worthless?

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Today two reliable sources told me that all five FCC commissioners have now signed off on Class B AIS for US waters, though neither knows when the Order will become effective. The final step should be…