On Jul 18, 6:30*pm, " wrote:
On Jul 18, 11:48*am, Doug Miller wrote:
...

Right - just to clarify a couple of things:
1. AIS Receivers do not need GPS signals to output AIS sentences. They
work independent of GPS.
2. With the SR161/SR162, you can feed GPS (or any other NMEA data)
into the AIS receiver at 4800 baud on pin 3 and the receiver will
combine the data with the AIS sentences and output the combined
datastream out the single serial port at 38400 baud on pin 2 with a
common ground on pin 5. We sell a cable to do this and also include
the wiring diagram to build your own. See:http://www.milltechmarine.com/images...ng-diagram.pdf

Doug Miller
Milltech Marine

Cool. *I'm in the market for an SR 161. *Does it help the unit any to
have a GPS feed or does it just pass the data through. *I can imagine
how the unit might take advantage of knowing the packet timing, but I
don't know if does.

-- Tom.

GPS does affect AIS perfofrmance but of course you'll need a GPS for
your nav package in order to calculate collision information (e.g.
distance from you, closest point of approach and time to closest point
of approach).