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    Suunto 9 Highly inaccurate speed readings

    Scheduled Pinned Locked Moved Suunto 9
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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… šŸ‘Ž

          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

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

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

                  living sideways

                  1 Reply Last reply Reply Quote 0
                  • 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… šŸ‘Ž

                    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 šŸ‘

                          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: ā€œBy distance/timeā€ or ā€œRecorded by deviceā€

                              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 ā€œRecorded by deviceā€ 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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