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Old 16-01-2013, 07:43   #1
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Join Date: Oct 2012
Location: Brighton, UK
Boat: Westerly Oceanlord
Posts: 397
IEC 61162-4

Seems like everyone's got a product for putting NMEA data over IP (over 802.something) these days. I notice that IEC 61162 part 4 specifies NMEA-0183 over "ethernet". It costs CHF280 to buy the document (so I won't be doing that for my freeware project) but the downloadable index suggests that it is specifying UDP multicast as the transport mechanism.

Are any manufacturers actually using this standard? All the products I've seen translating nmea-0183 to ethernet/wireless seem to use either tcp or udp broadcast with a variety of different ports. Nothing using multicast.
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