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  • These non-ADS-B MLAT tracks are causing issues in the San Francisco Bay Area - I'm seeing the same thing, but unfortunately we have two different T-SJCNN receivers posting two different aircraft coordinates with different ICAO numbers for the same aircraft! So flightradar24 is showing TWO airplanes where there are none actually transmitting ADS-B coordinates.

    I'm all for more aircraft but these need to be handled properly (throwing away the aircraft with the invalid ICAO and categorizing the valid track as MLAT would be nice). Seeing two aircraft near each other with nearly the same altitude is a bit surprising but I've gotten used to filtering it mentally. The inaccuracy of the MLAT receivers is a little jarring as well when you're used to observing solid ADS-B coordinates too but that is another topic.

    Comment


    • Originally posted by falcongsr View Post
      TSo flightradar24 is showing TWO airplanes where there are none actually transmitting ADS-B coordinates.
      Yes, at various times tonight there have been two Goodyear Blimps over the Cal UCLA game at the Rose Bowl; T-KBUR1 reporting Flightaware MLAT.

      blimp.jpg

      Comment


      • For all you FR24 feeders, check out adsbexchange.com - completely unfiltered and can be fed in addition to FR24 with a simple command.


        Sent from my iPhone using Tapatalk

        Comment


        • Raspberry Pi problem with RTL2838UH Dongle - Not receiving any aircraft to upload

          Hi there,

          I have been using Windows 10 to share flight data without problems.

          I decided to use my Raspberry Pi to share data with Flightradar24 and followed the online installation instructions so that I could use my RTL2838UH Dongle. I am not sure why, but I am not receiving any aircraft to upload and I'm uncertain what to do next.

          My set-up is as follows:
          Raspberry Pi type B
          a powered hub
          a loft antenna fed with a short length of RG213

          I used the following command "service fr24feed status" and this is the result.

          pi@raspberrypi ~ $ service fr24feed status
          [ ok ] FR24 Feeder/Decoder Process: running.
          [ ok ] FR24 Stats Timestamp: 2015-10-28 13:45:11.
          [ ok ] FR24 Link: connected [UDP].
          [ ok ] FR24 Radar: T-EGLC51.
          [ ok ] FR24 Tracked AC:.
          [ ok ] Receiver: connected (0 MSGS/0 SYNC).
          [ ok ] FR24 MLAT: ok [UDP].
          [ ok ] FR24 MLAT AC seen: 0.

          My home location is London, so there are plenty of aircraft nearby.

          I have checked my antenna and it is connected.

          Could it be a driver issue?

          I am new to Raspberry Pi, so any help would be gratefully received.

          Many thanks,

          Bob.

          Comment


          • If you drop the service you will get more output to diagnose from

            sudo service fr24feed stop
            sudo fr24feed start

            That will let you see the startup procedure and any errors/issues contacting the USB stick. Does the version have the right frequency range?
            Posts not to be taken as official support representation - Just a helpful uploader who tinkers

            Comment


            • Hi again,

              I did what you suggested and this is what was displayed. There is obviously an error, but I am not sure what and how to deal with it.

              Thanks,

              Bob.

              rtlsdr_demod_write_reg failed with -4
              rtlsdr_demod_read_reg failed with -4
              rtlsdr_demod_write_reg failed with -4
              rtlsdr_demod_read_reg failed with -4
              rtlsdr_demod_write_reg failed with -4
              rtlsdr_demod_read_reg failed with -4
              rtlsdr_demod_write_reg failed with -4
              rtlsdr_demod_read_reg failed with -4
              rtlsdr_demod_write_reg failed with -4
              rtlsdr_demod_read_reg failed with -4
              Exact sample rate is: 2000000.052982 Hz
              rtlsdr_demod_write_reg failed with -4
              rtlsdr_demod_read_reg failed with -4
              rtlsdr_demod_write_reg failed with -4
              rtlsdr_demod_read_reg failed with -4
              rtlsdr_demod_write_reg failed with -4
              rtlsdr_demod_read_reg failed with -4
              rtlsdr_demod_write_reg failed with -4
              rtlsdr_demod_read_reg failed with -4
              rtlsdr_demod_write_reg failed with -4
              rtlsdr_demod_read_reg failed with -4
              rtlsdr_demod_write_reg failed with -4
              rtlsdr_demod_read_reg failed with -4
              rtlsdr_write_reg failed with -4
              rtlsdr_write_reg failed with -4
              Gain reported by device: 0.00
              Failed to submit transfer 0!
              2015-10-28 21:58:47 | [time][i]Synchronizing time via NTP
              2015-10-28 21:58:52 | [time][i]Time synchronized correctly, offset +0.0006 seconds
              2015-10-28 21:58:52 | [main][i]Feed Network client started
              2015-10-28 21:58:52 | [main][i]RAW data server started
              2015-10-28 21:58:52 | [raw][i]Initializing server
              2015-10-28 21:58:52 | [raw][i]Starting server on 0.0.0.0:30002
              2015-10-28 21:58:52 | [raw][e]Could not bind socket to *:30002, errno=98
              2015-10-28 21:58:52 | [feed][i]Downloading configuration
              2015-10-28 21:58:52 | [feed][c]Interval: 5s
              2015-10-28 21:58:52 | [feed][c]Latitude: 51.5943
              2015-10-28 21:58:52 | [feed][c]Longitude: 0.2230
              2015-10-28 21:58:52 | [feed][c]GND: YES
              2015-10-28 21:58:52 | [feed][c]NonADSB: YES
              2015-10-28 21:58:52 | [feed][c]Timestamps: optional
              2015-10-28 21:58:52 | [feed][c]Max range AIR: 350.0nm
              2015-10-28 21:58:52 | [feed][c]Max range GND: 100.0nm
              2015-10-28 21:58:52 | [feed][i]defined 1 server
              2015-10-28 21:58:52 | [feed][n]EGLC51@83.140.21.66:8099/UDP
              2015-10-28 21:58:52 | [feed][n]connecting
              2015-10-28 21:58:52 | [stats][i]Stats thread started
              2015-10-28 21:58:52 | [mlat][i]MLAT configuration received, service ENABLED
              2015-10-28 21:58:52 | [mlat][i]Starting MLAT with preconfigured position: 51.59,0.22,40.0
              2015-10-28 21:58:52 | [mlat][i]MLAT bandwidth reduction active, level 1
              2015-10-28 21:58:52 | [mlat][i]Configuring UDP connection udp://mlat-1.fr24.com:19788
              2015-10-28 21:58:52 | [mlat][i]Registering MLAT station
              -10-28 21:59:07 | [mlat][i]Pinging the server
              2015-10-28 21:59:07 | [mlat][i]Stats 0/0
              2015-10-28 21:59:12 | [feed][n]connected via TCP
              2015-10-28 21:59:12 | [feed][n]switching to UDP
              2015-10-28 21:59:12 | [feed][n]working
              2015-10-28 21:59:27 | [mlat][i]Pinging the server
              2015-10-28 21:59:27 | [mlat][i]Stats 0/0
              2015-10-28 21:59:42 | [feed][n]ping 1
              2015-10-28 21:59:47 | [mlat][i]Pinging the server
              2015-10-28 21:59:47 | [mlat][i]Stats 0/0
              ^[[A2015-10-28 22:00:07 | [mlat][i]Pinging the server
              2015-10-28 22:00:07 | [mlat][i]Stats 0/0
              2015-10-28 22:00:12 | [feed][n]ping 2
              2015-10-28 22:00:27 | [mlat][i]Pinging the server
              2015-10-28 22:00:27 | [mlat][i]Stats 0/0
              2015-10-28 22:00:42 | [feed][n]ping 3

              Comment


              • m0bob,

                Do you have anything exciting about your dongle in 'dmesg' output?
                Also try connecting it directly without a power hub.

                Comment


                • Bob

                  Are you trying to use any other feeders on the Raspberry pi to other sites?

                  Are you getting raw data out on <your pi IP address>ort

                  Where port is 3002,3003 or 3005?

                  I had the same issue and it was a mis configuration of the FR24 feeder. (Caused after a Wifi dongle failure of all things which somehow broke the config!!)

                  lcs

                  Comment


                  • What is this?
                    pi@pi ~ $ sudo service fr24feed status
                    Б≈▐ fr24feed.service - LSB: Flightradar24 Decoder & Feeder
                    Loaded: loaded (/etc/init.d/fr24feed)
                    Active: active (running) since Fri 2015-10-30 20:27:19 EET; 3min 57s ago
                    Process: 480 ExecStart=/etc/init.d/fr24feed start (code=exited, status=0/SUCCE
                    CGroup: /system.slice/fr24feed.service
                    Б■Б■─559 /usr/bin/fr24feed -- --monitor-file=/dev/shm/fr24feed.txt -
                    Б■■Б■─593 /usr/lib/fr24/dump1090 --raw --mlat

                    Oct 30 20:27:19 pi fr24feed[480]: Starting FR24 feeder: fr24feed.
                    Oct 30 20:27:19 pi systemd[1]: Started LSB: Flightradar24 Decoder & Feeder.

                    Comment


                    • After i do the first steps i try to install fr24
                      $ sudo apt-get update
                      $ sudo apt-get install fr24feed
                      E: Unable to locate package fr24feed
                      Please help me i use raspbian jessy

                      Comment


                      • Originally posted by DerMarienfelder View Post
                        After i do the first steps i try to install fr24
                        $ sudo apt-get update
                        $ sudo apt-get install fr24feed
                        E: Unable to locate package fr24feed
                        Please help me i use raspbian jessy
                        Probably not added the repository certificate first. It won't know where to find it

                        Sent from my XT1092 using Tapatalk
                        Posts not to be taken as official support representation - Just a helpful uploader who tinkers

                        Comment


                        • Originally posted by Oblivian View Post
                          Probably not added the repository certificate first. It won't know where to find it

                          Sent from my XT1092 using Tapatalk
                          Thx now it works

                          Comment


                          • Could you explain to me how I add the repository certificate please?

                            Thanks.

                            Bob.

                            Comment


                            • Originally posted by m0bob View Post
                              Could you explain to me how I add the repository certificate please?
                              Code:
                              sudo apt-key adv --keyserver pgp.mit.edu --recv-keys 40c430f5
                              T-EDDI15RasPi2 + RTL2838 USB dongle + stock antenna

                              Comment


                              • Look at the First Page :-)

                                Comment

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