Raymarine ST-STng converter, hand’s on #1 (GPS)

Ben Ellison

Ben Ellison

Panbo editor, publisher & chief bottlewasher from 4/2005 until 8/2018, and now pleased to have Ben Stein as a very able publisher, webmaster, and editing colleague. Please don't regard him as an "expert"; he's getting quite old and thinks that "fadiddling fumble-putz" is a more accurate description.

10 Responses

  1. Ben Ellison Ben Ellison says:

    By the way, I’ve tried several ways of installing the ST-STng Converter and they’ve all worked. But the setup behind all the screens above is probably the most extreme. The wind, depth/speed/temp, and heading sensors are all wired to their respective ST40 instrument displays, whose SeaTalk cables go to a couple of ST triple joiners and then to an ST-STng Converter. Which is daisy chained to another converter which handles the Raystar GPS and which finally patches to the NMEA backbone. In other words, all the SeaTalk gear, data and power feed, is on one drop.
    What didn’t work very well at all was using an ST70 to bridge any of the ST40 data onto the backbone, even though it has the latest software. The data displayed on the ST70 OK, but it rarely made it anywhere else in the system.

  2. Thomas says:

    ST70 doesn’t bridge the data, that little adaptor cable can be viewed as a one way street type of deal. Feed data to the ST70, it will not leave the display though.
    There’s a reason the adaptor came into being!
    Also, keep in mind the SeaTalkNG adaptor can be software updated, so hopefully the elevation is a non-issue in the near future.

  3. Jeremy Anwyl says:

    I have been experimenting with the converter and 125 plus as well. Using the 125 plus my readings were even more strange than Ben reports. I had time data on the network, but lat/lon was never transmitted, even with the 125 flashing green.
    I had more success using the converter to create an isolated seatalk network for several St60 Maxiviews. The MaxiViews all displayed wind speed and direction, SOG, depth, avg speed, etc. Everything looked good.
    But I did experience weirdness with my ST 70s. One example: The displays locked as far as showing wind speed. Wind direction (and other data) was fine. I have some Furuno displays that showed the wind correctly, so I don’t think it was a problem on the network.
    Restarting the network cured the problem, but I think this set up needs a new firmware to get the bugs sorted out. (I was using version 1.01)

  4. TJ says:

    I too have a newly “converted” Raystar 125 connected to a Lowrance LMF-400 simply to catch my fuel data on duel OB’s, via a pair of EP-60R’s. Unfortunetly, the Raystar converter is doing something funky with a known good position reported to the E140W. The Lowrance LMF-400 does show a flashing accurate position, but reads down below that there is no lock. Of course with an LGC4000 the accurate position neither flashes at 1hz, nor says that it has no lock. Needles to say, fuel managent system will not operate without a “good gps” signal acceptence.

  5. Bill Bishop says:

    I did a quick calculation on the negative altitude number shown by the Raymarine, and the vessel appears to be in orbit on the other side of the planet, about 125,000 miles out. I hope they remembered their space suit, and Tang, in addition to the PFD’s.

  6. GBN says:

    As yes interoperability, isnt it great

  7. Therapy says:

    Somehow stumbled on this and wow! I am getting ready to replace my recently stolen 5212. They ripped out the wiring and I am now trying to figure out how to hook up all those little thin wires to the right places on the terminal blocks.
    I sure wish someone would come out and put together the plug and play stuff so my 5212 could talk to my raymarine wind and Tri-data instruments.
    Hudson Florida.

  8. pascal says:

    hey ben
    little question about the convertor
    if i hook it up on my n2k garmin net work
    do i get the wind info on my 5012 the same way as if i have a orginale garmin windsensor ??
    and get the raymarine auto pilot is waypoint also true this convertor or thase it need to stay connected treu 0183??
    and do you still need to power up the convertor or can it get his power from the n2k to feed the seatalk ??
    greetings pascal

  9. Ben Ellison Ben Ellison says:

    Yes, Pascal, all the sensor data seen in top screen looks fine on the Garmin displays (and others). You can see ST-STng wind data on the Garmin 740 screen I put up recently:
    In my testing, the ST-STng converters and all the SeaTalk sensors and screens attached are being powered off the N2K backbone.
    I don’t know about waypoint and autopilot data, though. It would be great if Raymarine published a list of PGNs supported, but I just checked and don’t see any online documentation.

  10. Anonymous says:

    thx ben or the info
    yes i read your post from yesterday
    but i just wanted to be sure about it
    so if i install this convertor i can get the wind direction togeter wind the compasrose on your nav screen like explain in the 5012 manuel.
    lets hope raymarine is giving more info free about this converter
    greetings pascal

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