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Title: Introduction and request for comments
#1
Greetings... I would like to introduce myself. I am a long-term Mac user who avoids PCs - I was once an IT professional, so I know what I am avoiding here!

I have for two years been using iNavX on an iPhone aboard my Morgan Giles 30 yacht, and have had a great experience. I am now fortunate to have just ordered a brand new boat, an Alubat Ovni 395, to be delivered next April, and I am designing the electronics, amongst many other tasks. I favour open systems, rather than putting a lot of money into proprietary displays and getting tied to a particular manuafacturer, so will be using my trusty MacBook, MacENC and iPhone, or may be iPad.

I have a Schematic of how things should work here . The dotted items are planned for Phase 2 - initially I intend to have MacENC do the broadcast to the iPhone/iPad. Later I may install the Brookhouse iMux so that the MacBook does not have to be running. Note that I have an AIS transponder in here. This led to the choice of the Standard Horizon GX2000 VHF radio, as it, uniquely as far as I know, has the ability to process AIS data via NMEA and list AIS targets, so they can be called via DSC without having to enter MMSI numbers - not something I want to spend time on if needing to discuss collision avoidance in a hurry.

An earlier version of this scheme used the cheaper Digital Yacht AIS transponder and I hoped to use the in-built GPS as my main GPS receiver, but I have been warned off relying on that. The various NMEA 0183 connections were looking more like a bird's nest of different in and out wires at various speeds and needed multiplexors, and I was getting apprehensive at the amount of fiddling it might take to get it working. I have now focussed on NMEA 2000 wherever possible, and this has greatly simplified the whole thing. I am telling myself the extra cost of the NMEA 2000 compliant AIS transponder, GPS receiver and tridata transducer is a wise investment.

Will it work? Does anyone see any problems? Any comments would be really appreciated - thanks.
 
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#2
I do like the idea of staying with N2K as much as possible. The Actisense NGT-1 does a good job.

If you are using MacENC with the Actisense NGT-1 N2K gateway there is not much need for the iMux as MacENC will take the N2K and convert it to N-0183 for iNavX. Next month I will add N2K AIS support to MacENC and again MacENC will take the N2K AIS and convert it to N-0183 AIS for iNavX.

I don't believe (but please confirm) the Actisense NGW will take N2K AIS and convert it to N-0183.
Scott Dillon
Sydney Australia
North Shore 38
CYCA
 
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#3
Whoops! It looks like the Actisense NGW does not yet support AIS. It is marked 'To Be Announced' in the list of conversions supported. So my Standard Horizon VHF will not see the AIS data that way, at least for now. The Garmin AIS 600 can also send via NMEA 0183, so I may have to wire a private connection from the AIS 600 to the GX2000. I need to check the AIS 600 can send AIS data on both NMEA 2000 & 0183 concurrently.

Thanks for your comments.
 
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