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    Suunto 9 Highly inaccurate speed readings

    Scheduled Pinned Locked Moved Suunto 9
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    • surfboomerangS Offline
      surfboomerang @Dimitrios Kanellopoulos
      last edited by surfboomerang

      @Dimitrios-Kanellopoulos I sent you the links in a pm

      Suunto Vertical Titanium Solar
      OnePlus Nord 4

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      • surfboomerangS Offline
        surfboomerang
        last edited by

        <Frustration mode>

        Can someone tell me if this issue is resolved in the upcoming firmware update?
        I did a windsurf session today on a rainy day and I had GPS+Galileo on. The picture below shows a segment of a track that is almost 100 km like this.
        As you can see it is a horrible recording of speed!!! 😫 😫

        Annotation 2019-10-06 165047.png
        </Frustration mode>

        Suunto Vertical Titanium Solar
        OnePlus Nord 4

        freeheelerF Dimitrios KanellopoulosD 2 Replies Last reply Reply Quote 1
        • freeheelerF Offline
          freeheeler @surfboomerang
          last edited by freeheeler

          @surfboomerang
          I just compared my recordings from a3p to s9b within SA… s9b indeed gives a spikier graph… strange!

          a3p: https://app.suunto.com/move/skiingone/5d836edd58e211b5ae86859e

          s9b:
          https://app.suunto.com/move/skiingone/5d921b3c58e2111193c1ec1c

          living sideways

          surfboomerangS 1 Reply Last reply Reply Quote 0
          • freeheelerF Offline
            freeheeler
            last edited by

            and just noticed that the exported link displays my highest point of 948m as ascent… 👎

            living sideways

            fejkerF 1 Reply Last reply Reply Quote 0
            • surfboomerangS Offline
              surfboomerang @freeheeler
              last edited by

              @TELE-HO I haven’t seen those spikes with my old a3p either. Only with my s9 baro.

              Suunto Vertical Titanium Solar
              OnePlus Nord 4

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              • Dimitrios KanellopoulosD Offline
                Dimitrios Kanellopoulos Community Manager @surfboomerang
                last edited by

                @surfboomerang should be. Wait for end Oct

                Community Manager / Admin @Suunto
                Creator of Quantified-Self.io
                youtube.com/c/dimitrioskanellopoulos
                https://instagram.com/dimitrioskanellopoulos
                https://www.strava.com/athletes/7586105

                surfboomerangS 2 Replies Last reply Reply Quote 1
                • surfboomerangS Offline
                  surfboomerang @Dimitrios Kanellopoulos
                  last edited by

                  @Dimitrios-Kanellopoulos That would be great! Thanks!

                  Suunto Vertical Titanium Solar
                  OnePlus Nord 4

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                  • freeheelerF Offline
                    freeheeler
                    last edited by

                    @solid_dd
                    it’s like a good wine, it takes time but then it’s great ☺

                    living sideways

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                    • fejkerF Offline
                      fejker Gold Members @freeheeler
                      last edited by

                      @TELE-HO said in Suunto 9 Highly inaccurate speed readings:

                      and just noticed that the exported link displays my highest point of 948m as ascent… 👎

                      It has been like this since I can remember and I have reported this many times and nothing has happened since at least January 2019 … and I bet you all my tech gear that it has been like this longer than that. Here we are nine months later and still nothing.

                      SHUT UP LEGS!
                      -Jens Voigt

                      freeheelerF 1 Reply Last reply Reply Quote 2
                      • freeheelerF Offline
                        freeheeler @fejker
                        last edited by

                        @fejker
                        I’m glad it’s on the export file only that I actually don’t need… it’s correct for Strava…
                        the pain is: when @Dimitrios-Kanellopoulos wants to see our files and asks for the shared link… he does not see what we see…
                        I noticed the wrong total ascent but more mistakes could be hidden anywhere…

                        living sideways

                        Dimitrios KanellopoulosD 1 Reply Last reply Reply Quote 0
                        • Dimitrios KanellopoulosD Offline
                          Dimitrios Kanellopoulos Community Manager @freeheeler
                          last edited by

                          @TELE-HO I dont look at the link data. As @fejker mentioned this is pretty much an old issue.

                          With the link you provide I open the activity with the Suunto app

                          Community Manager / Admin @Suunto
                          Creator of Quantified-Self.io
                          youtube.com/c/dimitrioskanellopoulos
                          https://instagram.com/dimitrioskanellopoulos
                          https://www.strava.com/athletes/7586105

                          freeheelerF 1 Reply Last reply Reply Quote 1
                          • freeheelerF Offline
                            freeheeler @Dimitrios Kanellopoulos
                            last edited by

                            @Dimitrios-Kanellopoulos
                            and within SA it is correct I assume 👍

                            living sideways

                            Dimitrios KanellopoulosD 1 Reply Last reply Reply Quote 0
                            • Dimitrios KanellopoulosD Offline
                              Dimitrios Kanellopoulos Community Manager @freeheeler
                              last edited by

                              @TELE-HO yes correct

                              Community Manager / Admin @Suunto
                              Creator of Quantified-Self.io
                              youtube.com/c/dimitrioskanellopoulos
                              https://instagram.com/dimitrioskanellopoulos
                              https://www.strava.com/athletes/7586105

                              1 Reply Last reply Reply Quote 0
                              • surfboomerangS Offline
                                surfboomerang @Dimitrios Kanellopoulos
                                last edited by surfboomerang

                                @Dimitrios-Kanellopoulos Just a small update/test after the latest firmware update:

                                I exported the FIT files of two moves from Runalyze and used GPXSee to analyze the fit files. The tool has 2 ways to calculate the speed: “By distance/time” or “Recorded by device”

                                Unfortunately the speed with GPS only didn’t improved very much after the latest firmware update if I calculate the speed by distance/time:
                                1.png

                                If I calculate the speed by “Recorded by device” it started to look a bit better:
                                2.png

                                The move with GPS+GLONASS however looks much cleaner if the speed is recorded by distance/time. Especially the second half
                                3.png

                                Is this because of a better/stronger signal if I combine GPS+GLONASS?

                                So it looks like the firmware update solved the speed wobble a little bit, but not quite like the Ambit 3 Peak. The speed spikes are also visible on the watch screen during the move, so it isn’t only the FIT file.

                                Suunto Vertical Titanium Solar
                                OnePlus Nord 4

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