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Thread: Humminbird GPS speed accuracy?

  1. #11
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    Quote Originally Posted by nhartke View Post
    Do you get a "donut" with an HS puck?

    You certainly will with a standard puck.
    You do not get the donut with the heading sensor puck.

  2. #12
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    I use handheld Garmin Etrex, my Hbirds jump around too much.
    Trump is like the guy that comes on the playground and beats up on the guys that's been pushing you around for the last 30 or 40 years.

  3. #13
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    Quote Originally Posted by BobB View Post
    You do not get the donut with the heading sensor puck.
    Maybe you should read the end of the quote I replied to. I understand you should never get a donut with an HS puck. The end of the quote I replied to sounded a little odd to me.

  4. #14
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    rnvinc is offline Crappie.com 2016 Man of the Year * Member Sponsor
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    Quote Originally Posted by superfly View Post
    Also at very slow speeds the GPS will show the boat 150 to 200 feet off coarse up on the bank at times.
    There have been reports in the past indicating a full track point library can cause the boat position to act funny on the chart views ...

    It's a good idea to occasionally clear the "Current Track" under the Nav tab from time to time ...

    The unit is supposed to start overwriting older track points when the track point library is full ...but it's still worth a shot and it doesn't hurt anything to clear it ...

    I clear my "Current Track" right before powerdown for the day ... Everyday ...

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  5. #15
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    The x9 units have 10hz receivers and I think the external grp puck is also. Everything else is not as fast.

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