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post #11 of 13 Old 11-20-2009
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Nasa AIS

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Originally Posted by barnakiel View Post
NASA.

If you have a laptop then their black box unit, if not then the one with screen. I think in the US Sitex sold them, but NASA is still in the UK.

b.
Just bought one from cactusmarine.com. just go to their site and search for nasa ais. $200 it's a nice little unit and comes with free software for pc. Also bought the rubber ducky antenna just for this unit $50 with wiring, much simpler then a VHF splitter.
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post #12 of 13 Old 11-25-2009
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Hi All,
I am interested in AIS, but the cheapest way possible.
(AIS is Automatic identification system. For those of you who are not aware of this yet; It is an ANTI COLLISION SYSTEM FOR COMMERCIAL SHIPPING USED WORLDWIDE.)
We don't need a transponder, just a receiver that outputs to a laptop so I can find ships' GPS positions, heading and speed, who enter my security circle, which is set on a 20NM radius.
Yep, you guessed right, I am the navigator on our boat.
AIS data is transmitted on Ch 87 & 88 VHF and seeing we have 2 VHF radios and 3 laptops o/b; I thought that there must be a way to utilize our equipment, without buying more electronic boxes.
I've been looking around for months, on the internet for something.
When we were on the hard in New Zealand and talking to some locals, who put us in contact with a company here in Tauranga.
These guys put an audio filter in the radio.
The filter distinguishes between AIS data and interference.
It ouputs to the laptop and presto, we've got a pretty cheap AIS receiver. I'm not sure how it actually works, but it does.
We had this installed a month ago.
Included came heaps of usefull software on a dvd They even installed the software on all our laptops. We paid $130US.
this is really great to hear..i will check this out, maybe if it fits with my budget i will get one..
thanks ^_^


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post #13 of 13 Old 11-25-2009
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You might check out the SR161 from Milltech Marine, outputs rs-232 serial data, about 190$us. That way you are not tying up a processor, a radio, etc, and it is only 60$us more.

(Edit - I tried to put a link to the page but Sailnet messed the link up)

What are you pretending not to know ?

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Last edited by wind_magic; 11-25-2009 at 03:11 AM. Reason: Edit
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