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Thread: GPS Co-ordinates don't work

  1. #1

    GPS Co-ordinates don't work

    I have uploaded my co-ordinates to my Humingbird 700 series fishfinder/gps and no matter what the co-ordinates are wrong. The gps is righ and knows where I am but when I put in a spot, it is nowhere near where it is.

    For example, if have entered the following, not once but 5 times: The Hummingbird GPS takes me miles north and way of track. Does anyone else have this problem? I am new to this and entered the data as East & South. It is like it is in the wrong format, my Hummingbird is set to WGS84. Can any one hep me?

    Kiama Canyon Blue-eye Trevalla, Tuna, Gemfish, 34.31.504 151.16.000
    Albacore, Hapuka. Water depth
    240 fathoms. Hard bottom.
    Marlin, Trevally, Tuna. 34.47.33 151.10.28
    Marlin, Yellowfin Tuna, Gemfish. 34.48.34 151.10.35
    6 Mile Reef Inside Hussars, Snapper, Morwong, Reef 34.41.980 150.57.147
    species. Water depth 60 fathoms.
    6 Mile Reef Outside Hussars, Snapper, Morwong, Reef 34.41.980 150.57.147
    species. Water depth 60 fathoms.
    Gerroa Sml Bombora 34 47.091 150 49.112
    4 Mile Reef Snapper, Reef species. Water depth 34.47.57 150.52.45 WGS84
    40m. Reef bottom.
    Gerroa Big Bombora 34 47.588 150 48.850
    Kiama Blue Eye 34 47.900 151 10.760
    Mission House Reef 34 50.168 150 55.797
    NE Mission House 34 50.178 150 54.781
    Mission Ground 34 50.573 150 54.340

  2. #2

    Re: GPS Co-ordinates don't work

    " Map Datum:
    A Map Datum refers to a particular survey of the earth’s surface that was
    referenced when creating a chart (i.e. WGS84). Since the earth is not flat, and not even consistently round, a mathematical model must be used to translate coordinates from the sphere of the earth to the flat surface of a chart. This mathematical model is the Map Datum. Historically, many different Map Datums have been used around the world to create maps; often a reference to the Map Datum can be found in the legend of a paper map. It is important to select the correct Map Datum setting in your fishfinder when comparing GPS position to a paper chart to avoid slight position inaccuracies. Almost all electronic charts use the WGS84 Map Datum and therefore, they do not require setting changes. "


    You should be able to change the input method on the GPS, check the online manual. http://www.humminbird.com/PDF/AS_GR16.pdf
    otherwise convert the point to alternate formats. http://www.jeepreviews.com/wireless-gps-coordinates/

  3. #3

    Re: GPS Co-ordinates don't work

    Seems a stupid question but Ive done it before, are you selecting S and E, not N and W?

  4. #4

    Re: GPS Co-ordinates don't work

    Quote Originally Posted by Pretzil View Post
    Seems a stupid question but Ive done it before, are you selecting S and E, not N and W?
    i did the same thing with my hummingbird. i got the first co-ord in right, but every other one defaulted to S and N cos i bought a usa model.

    try zooming out on the monitor, and see how far out the marks are on the plotter. mine were actually in the northern hemisphere, duh....
    Fishing- It's only an addiction if you're trying to quit.

  5. #5

    Re: GPS Co-ordinates don't work

    try putting a - infront of the latitude mate eg. -34.31504. Or make sure that it is infact reading south for the latitude and not north. I work in drafting for a surveying company and have numerous times put in a number for latitude only to find it end up in the northen hemisphere *doh*

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