Furuno GP39 GPS/WAAS Navigator w/4.2" Color LCD

Does the job. Particularly nice to see that it offers all three legacy versions of the NEMA standard for output via user option. I needed this to interface to an older (fussy) stabilizer circuit. Worked like a charm. Only gripe is that the "destination" function is limited to next waypoint when following a route. Don't understand this as I'm always interested in ETA for the final waypoint when on a cruise. Otherwise excellent quality.

Sure dozens of cheaper ones that have better specs. But for the rock solid reliability especially as a stand alone this unit has my trust. 100% easy install, big buttons and never a glitch. Long after those garmins and raymarines are failed the furuno will be shouting out latlon. If it had built in WiFi and n2k, well that would be tops

14x9x7 are the shipping *box* dimensions. The item itself: base is 7"Lx3.25"W. 7" tall. (Just received; have not yet installed/tested operation.)

I had a GP31 from Furuno which worked perfectly for 20+ years. Alas, in April 2019 it stopped giving accurate data due to the GPS rollover (week data from the satellites is transmitted in a 10 bit word, which only handles 20 years of weeks). I bought a GP39 which operates fine, once you get it installed. The mount, though, is sub-par. It will work great if bolted to a table, but you can't mount the GPS display on a vertical bulkhead; if you do the display is angled 45 degrees down and is unreadable. I Dremel-ed away some plastic which helps, but it still won't angle parallel to the bulkhead. It's about 20 degrees down. The mount is also cheap. And, with the Dremel-ed mount angled 20 degrees down the cables get crunched. It also draws much more power than the GP31. The spec says 0.7 amps. I'm measuring about half that, which is still twice the GP31's current consumption. There's no manual provided, just 4 pages of inscrutable info. I did finally find a manual on-line. It's pretty good, but is lacking important info, for example, about the I/O Setup page. Finally, it doesn't send the NMEA sentences about which satellites it's watching, so my AIS can't display that info. That was also true of the GP31. And good luck trying to program the thing to transmit the right NMEA data! It's an undocumented trial and error process.

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