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  • fr24feed output on RPi (bash)

    I would like to know where I can find help about such things as feed sent 1,2 AC
    etc when I monitor fr24feed text as Im just guessing what it means at the moment!
    Is there a help page anywhere as s/w is only as good as its Help file IMHO!
    James Lazzari BSc (Hons)
    T-EGCC125
    http://www.ukjay.co.uk

  • #2
    Just use the web page not the console. It's far more informative

    It's mlat,adsb AC = aircraft.

    Sent from my EML-L09 using Tapatalk
    Posts not to be taken as official support representation - Just a helpful uploader who tinkers

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    • #3
      And if you look at /monitor.txt it shows the raw data that the console info data is pulled from.

      Sent from my EML-L09 using Tapatalk
      Posts not to be taken as official support representation - Just a helpful uploader who tinkers

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      • #4
        Thanks Oblivian, I guessed AC meant aircraft, but recently I wondered if I was wrong and it was Modes for the numbers 1,2 etc.
        I'll now goodle mlat & adsb haha

        But am guessing these are the two modes where the fist has no Lat,Long data...
        I do like the tracked list displayed on the browser, which I can monitor from my tablet/windows/RPi
        Anyway I digress & thanks again!

        I suppose this forum is the help file !!!
        James Lazzari BSc (Hons)
        T-EGCC125
        http://www.ukjay.co.uk

        Comment


        • #5
          More a case of only give people the basics to get data to us. The rest is need to know/not of interest to Joe bloggs I guess.

          Mlat is the non location data, yes. Server then uses that with others same data and triangulates.

          Other times it will capture but not upload if sever sends a dont-bother/ignore req so you see xAC removed.

          Sent from my EML-L09 using Tapatalk
          Posts not to be taken as official support representation - Just a helpful uploader who tinkers

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          • #6
            brilliant - thanks again
            just searching on my RPi for that monitor file you mentioned!
            A lot rusty on Linux, so things are very slow here in Stoke .....
            James Lazzari BSc (Hons)
            T-EGCC125
            http://www.ukjay.co.uk

            Comment


            • #7
              cat /dev/shm/decoder.txt


              Don't you like the table at http://address_of_pi/dump1090/

              Comment


              • #8
                Originally posted by ukjay View Post
                brilliant - thanks again
                just searching on my RPi for that monitor file you mentioned!
                A lot rusty on Linux, so things are very slow here in Stoke .....
                Http://piipgoeshere:8754/monitor.txt

                Sent from my EML-L09 using Tapatalk
                Posts not to be taken as official support representation - Just a helpful uploader who tinkers

                Comment


                • #9
                  Ok I just got it
                  http://locahost:8754/monitor.txt
                  but subtituted local host for my RPi IP address as I'm on my windows PC at the moment

                  Thanks again - I got tired doing searches on my RPi
                  Great info tar !
                  James Lazzari BSc (Hons)
                  T-EGCC125
                  http://www.ukjay.co.uk

                  Comment


                  • #10
                    Code:
                    2019-05-18 12:04:34 | [mlat][i]Pinging the server
                    2019-05-18 12:04:34 | [feed][i]filtering out 116 overlapping AC (saving bandwidth)
                    2019-05-18 12:04:34 | [mlat][i]Stats 36353605/2184
                    2019-05-18 12:04:36 | [feed][i]removed 2 of 123 AC
                    2019-05-18 12:04:38 | [feed][i]sent 4,101 AC
                    2019-05-18 12:04:43 | [feed][i]sent 5,97 AC
                    2019-05-18 12:04:44 | [feed][i]removed 1 of 123 AC
                    2019-05-18 12:04:48 | [feed][i]sent 3,96 AC
                    2019-05-18 12:04:53 | [feed][i]sent 4,90 AC
                    2019-05-18 12:04:54 | [mlat][i]Pinging the server
                    2019-05-18 12:04:54 | [mlat][i]Stats 36355656/2051
                    2019-05-18 12:04:56 | [feed][i]removed 1 of 122 AC
                    2019-05-18 12:04:58 | [feed][i]sent 5,91 AC
                    2019-05-18 12:05:03 | [feed][i]sent 7,92 AC
                    2019-05-18 12:05:08 | [feed][i]removed 1 of 124 AC
                    2019-05-18 12:05:08 | [feed][i]sent 6,90 AC
                    2019-05-18 12:05:12 | [feed][i]removed 1 of 125 AC
                    2019-05-18 12:05:13 | [feed][i]sent 9,90 AC
                    2019-05-18 12:05:13 | [feed][n]syncing stream async: 1
                    2019-05-18 12:05:14 | [feed][n]syncing stream result: 1
                    2019-05-18 12:05:14 | [mlat][i]Pinging the server
                    2019-05-18 12:05:14 | [mlat][i]Stats 36357587/1931
                    2019-05-18 12:05:16 | [feed][i]removed 2 of 126 AC
                    "sent 5,91" probably means that data for 5 of 91 AC with positions were sent to the server.

                    As for the other numbers:
                    2019-05-18 12:07:36 | [feed][i]filtering out 106 overlapping AC (saving bandwidth)
                    2019-05-18 12:07:40 | [feed][i]removed 1 of 114 AC

                    My guess is that the 106 and 114 are a count in relation to all aircraft, not only those with position.
                    "removed" means it's now out of range i believe.

                    2019-05-18 12:05:14 | [mlat][i]Stats 36357587/1931

                    Those are mlat statistics, on the right side is basically a count of messages sent to the server which will then be used for multilateration.
                    The left number is a total of those messages.

                    But that's all my guess, their is no official reference.

                    Comment


                    • #11
                      Where did you read that " feed sent 1,2 AC" anyway?

                      Normally fr24feed is started as a service and should already be running.
                      You need to define a log location to look at the log.

                      Otherwise it means that you are starting fr24feed a second time which can produce problems.

                      Comment


                      • #12
                        Ok Weidehopf
                        Thanks but I used to think it was
                        sent 5,91" probably means that data for 5 of 91 AC with positions were sent to the server.

                        But I gather it's mlat/adsb

                        As kindly informed by Oblivian

                        But thanks for the extra info
                        Last edited by ukjay; 2019-05-18, 11:13.
                        James Lazzari BSc (Hons)
                        T-EGCC125
                        http://www.ukjay.co.uk

                        Comment


                        • #13
                          If you restart fr24feed it starts with sending all aircraft, then only sends a lower number.
                          At the start it will say:
                          sent 91,91 aircraft.

                          Maybe it's 5 ADS-B aircraft sent, data for 91 aircraft sent for MLAT sync and positioning.

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                          • #14
                            Originally posted by wiedehopf View Post

                            "sent 5,91" probably means that data for 5 of 91 AC with positions were sent to the server.
                            Almost [emoji14]

                            2019-05-18 12:04:43 | [feed][i]sent 5,97 AC

                            2019-05-18 12:04:44 | [feed][i]removed 1 of 123 AC

                            97+5=....

                            Likely Matches the mlat-non-tracked and adsb-tracked flags of the monitor file (Raw fr24 Info)

                            Sent from my EML-L09 using Tapatalk
                            Posts not to be taken as official support representation - Just a helpful uploader who tinkers

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                            • #15
                              Code:
                              root@pi ~ # grep feed_num /dev/shm/decoder.txt 
                              feed_num_ac_adsb_tracked=91
                              feed_num_ac_non_adsb_tracked=24
                              feed_num_ac_tracked=115
                              Code:
                              2019-05-18 12:26:44 | [feed][i]removed 1 of 114 AC
                              2019-05-18 12:26:47 | [feed][i]sent 7,88 AC
                              2019-05-18 12:26:48 | [feed][i]filtering out 110 overlapping AC (saving bandwidth)
                              2019-05-18 12:26:52 | [feed][i]sent 2,93 AC
                              2019-05-18 12:26:57 | [feed][i]sent 4,96 AC
                              After filtering the first number always decreases.
                              That's why i think those are the planes actually sent.

                              Not quite sure what all this looks like when you disable MLAT but if i remember correctly the "sent 4,96" stays exactly the same wihout MLAT and has nothing to do with it.

                              And yes the second number is probably the number of ADSB aircraft tracked as it correlates with that number in the monitor.txt

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