Provided by: flightgear_2018.1.1+dfsg-1_amd64 bug


       fgcom - VoIP client for the FlightGear radio infrastructure


       fgcom   [--server=server]   [--host=listeninghost]   [--port=port]   [--callsign=callsign]
       [--frequency=frequency]     [--atis=frequency]     [--airport=code]      [--username=user]
       [--password=pass] [--silence-threshold=threshold] [--debug] [--help] [--version]


       fgcom is the FlightGear utility used for connecting to multiplayer voice servers.

       It  is  usually  not  necessary  to  run  fgcom  from  the  command line, as it is already
       integrated into FlightGear, with the exception of a few specific cases (such as  recording
       ATIS messages or performing a radio check, see the EXAMPLE section).


              Connect  to  the  FGCom  server  server.  By  default,  FGCom  tries  to connect to

       --host=listeninghost, --port=port
              Listen on the network interface having the IP address listeninghost, on port  port.
              By default, FGCom listens on the loopback interface ( on port 16661.

              The  specified  port  can  be used by an instance of FlightGear to communicate with
              FGCom and update the pilot position as they fly.

              Use the callsign callsign during the session.  By  default,  FGCom  uses  guest  as

              Set  the  active radio frequency to frequency. The frequency must be written in the
              format and must be given in MHz.

              Record an ATIS message on frequency MHz. The  frequency  must  be  written  in  the
              format and must be given in MHz.

              Position the pilot/controller to the airport having the ICAO code code.

              Since  some  radio frequencies might be reused across the world, it is essential to
              set the pilot/controller position correctly  to  make  the  FGCom  server  able  to
              determine the correct voice channel. Always use this flag if you are not connecting
              a FlightGear instance to FGCom.

       --username=user, --password=pass
              Log in to the FGCom server using the username user and the password pass.

              Set the silence threshold to threshold dB. The value must be between -60 and 0. The
              default is -35.0 dB.

              The silence threshold is the level below which the sound captured by the microphone
              is considered background noise (and, thus, filtered out  by  FGCom).   Setting  the
              silence  threshold  to -60 turns the filter off; setting it to 0 filters everything
              (mutes the microphone).

              Enable debug output for troubleshooting purposes.

       --help Display usage information and exit.

              Display the FGCom version and exit.


       fgcom exits with EXIT_SUCCESS on success, with EXIT_FAILURE if the syntax of the  command-
       line arguments is wrong or an error occurs.


       FGCom  understands  several  special  frequencies  used  for  testing  purposes or general

       ·  121.000 MHz, 121.500 MHz: "guard" frequencies reserved for emergency communications;

       ·  123.450 MHz, 123.500 MHz, 122.750 MHz: general chat frequencies;

       ·  700.000 MHz: radio station frequency. Depending on the FGCom server in use, a  recorded
          radio message will be played;

       ·  723.340 MHz: French Air Patrol communication frequency;

       ·  910.000  MHz:  echo test frequency. Your voice will be echoed back after a short delay,
          to allow you to check that your microphone, speakers/headset and that  your  connection
          to  the FGCom server works. The test is limited to a maximum of 65 seconds, after which
          you will be automatically disconnected;

       ·  911.000 MHz: "music on  hold".  The  frequency  continuously  plays  background  music,
          allowing you to check that your connection to the FGCom server works.


       ·  At  the  time of writing, there is no mechanism in place to update the frequencies used
          by FGCom with the ones used in the real world, should those change. The  former,  thus,
          might  not  always  correspond  to  the  latter.  Always  use the frequencies listed in
          FlightGear under AI ->  ATC  Services  in  Range  instead  of  the  ones  published  on
          aeronautical charts.


       Connect  to  the  default  FGCom server, switch to the San Francisco International Airport
       (KSFO) ground frequency (121.800 MHz) and allow FlightGear to  update  the  current  pilot
       position by sending it to port 16661 (the default one):

           $ fgcom --frequency=121.800 --airport=KSFO

       Perform a radio check by connecting to the echo test frequency:

           $ fgcom --frequency=910.000

       Record  an  ATIS  message on the San Francisco International Airport (KSFO) ATIS frequency
       (118.850 MHz):

           $ fgcom --atis=118.850 --airport=KSFO


       fgfs(1), the FlightGear wiki "FGCom 3.0" page ⟨