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Remote Ground Station (RGS) squitters

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  • #16
    No problem, thanks for all the tips. I have been listening to the audio(Airport Ops) on 131.550 and a little ACARS activity noted there but no uplinks.

    Getting late so will have a play with agc/bandwidth etc tomorrow.

    Cheers for now.

    Comment


    • #17
      Managed to getfollowing 3 SQ uplink messages on 131.725 - out of approx 18000 - so not easy from this location. I see one is CDG Paris, about 160 miles from here but don't know where 00XS is. I guess there maybe a list of SQ IDs somewhere? Nearest to me is Gatwick (00XS?) about 40 miles.
      Interesting, maybe when there are VHF "lifts" it will be possible get further

      13/03/15 18:23:57 UTC
      Mode: x Identifier: Ack.: {NAK}
      Message type: SQ
      Block:
      Message: 00XS


      14/03/15 08:36:36 UTC
      Mode: g Identifier: Ack.: {NAK}
      Message type: SQ
      Block:
      Message: 02XS CDG LFPG 04901N00233E V136975/


      14/03/15 20:24:42 UTC
      Mode: e Identifier: Ack.: {NAK}
      Message type: SQ
      Block:
      Message: 00XS

      Comment


      • #18
        More monitoring of Remote Ground Stations(RGSs) over past week on 131.725 Mhz has revealed
        CDG Paris: London Stansted: Zurich: Saarbrucken: Geneva: Brussels: Birmingham: Toulouse: and Norwich.
        Plus the unknown ? below which gives no ICAO/IATA/coordinates/freq information

        23/03/15 16:13:04 UTC
        Mode: g Identifier: Ack.: {NAK}
        Message type: SQ
        Block:
        Message: 00XS

        Comment


        • #19
          ACARS mode: b Aircraft reg:
          Message label: SQ Block id: Msg. no: 02XB Flight id: CGHSBS
          Message content:-
          P02337S04639WV136975/
          ----------------------------------------------------------[29/03/2015 15:01

          In SBSP - Brazil 131.550 Mhz

          Comment


          • #20
            Originally posted by Peter1066 View Post
            More monitoring of Remote Ground Stations(RGSs) over past week on 131.725 Mhz has revealed
            CDG Paris: London Stansted: Zurich: Saarbrucken: Geneva: Brussels: Birmingham: Toulouse: and Norwich.
            Plus the unknown ? below which gives no ICAO/IATA/coordinates/freq information

            23/03/15 16:13:04 UTC
            Mode: g Identifier: Ack.: {NAK}
            Message type: SQ
            Block:
            Message: 00XS
            Hi forum,

            Have been getting used to monitoring VDL2 on 136.975. There sure is lots of messages per minute compared with regular ACARS
            I am trying to see some ground stations - can anyone say whether they use a similar format as on ACARS?

            Comment


            • #21
              Originally posted by Peter1066 View Post
              Hi forum,

              Have been getting used to monitoring VDL2 on 136.975. There sure is lots of messages per minute compared with regular ACARS
              I am trying to see some ground stations - can anyone say whether they use a similar format as on ACARS?

              I have received this kind of message that I think is squitter. There is a mistake on coordinates because this is not Sao Paulo!

              05/04/15 10:18:09 UTC
              Broadcast address (hexa): FFFFFF (All aircraft)
              Source address (hexa): 219D18 (Ground Station, delegated address , command frame)
              XID (Exchange Identification) frame F=0
              Data (hexa): 828000140109383838353A3139393302020001030320A488F0 001F000156040120C10453425350C406000000000000C50494 000000C80303EFA6
              Public parameters:HDLC public parameter: 8885:1993
              Classes of procedures (hexa): 0001
              HDLC functions (hexa): 20A488
              Private parameter set identifier: V
              AVLC specific options parameter (hexa): 20
              Airports covered by the ground station: SBSP SAO PAULO/CONGON (BRAZIL)
              ATN router nets:
              * ADM identifier (hexa): 000000 User field (hexa): 000000
              Station operator mask (address) (hexa): 200000
              Ground station (+/- 3'): 0612'N 00900'W

              Comment


              • #22
                I guess this the information relating to the ground station "Source address (hexa): 219D18 (Ground Station, delegated address , command frame)" so very different from the regular ground station Squitter as this one from London Stansted on 131.975 MHz logged here. By the way I use a Multipsk decoder for both ACARS and VDL2


                20/03/15 10:05:33 UTC
                Mode: e Identifier: Ack.: {NAK}
                Message type: SQ
                Block:
                Message: 02XS STN EGSS 05153N00014E V136975/

                Comment


                • #23
                  ACARS mode: e Aircraft reg:
                  Message label: SQ Block id: [Uplink]
                  Message content:-
                  02XS JER EGJJ 0 4912N 00211W

                  Comment


                  • #24
                    ACARS Mode: 2 Aircraft reg: _______
                    Message Label: SQ Block ID: [Uplink]
                    Message content:-
                    01XASUBKSUB1ARINC
                    ----------------------------------------------------------[16/11/2017 10:46]-

                    Heard near Juanda Airport ( WARR ) , Surabaya, Indonesia on 131.45
                    It seems from ARINC ground station

                    Comment


                    • #25
                      -=[ Squitter message ]=-

                      ACARS Mode: s Aircraft reg: _______
                      Message Label: SQ Block ID: [Uplink]
                      Message content:-
                      00XS
                      ----------------------------------------------------------[16/11/2017 11:05]-

                      Heard near Juanda Airport ( WARR ) , Surabaya, Indonesia on 131.55
                      It seems from SITA ground station

                      Comment

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