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FGCOM(1)		     FlightGear	man pages		      FGCOM(1)

       fgcom - VoIP client for the FlightGear radio infrastructure

       fgcom  [--server=server]	 [--host=listeninghost]	[--port=port] [--call-
       sign=callsign]	[--frequency=frequency]	  [--atis=frequency]   [--air-
       port=code]   [--username=user]	[--password=pass]   [--silence-thresh-
       old=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 spe-
       cific  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 listen-
	      inghost, 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

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

	      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 pass-
	      word pass.

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

	      The  silence  threshold  is the level below which	the sound cap-
	      tured 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 syn-
       tax of the command-line arguments is wrong or an	error occurs.

       FGCom understands several special frequencies used for testing purposes
       or general chatting:

       o  121.000 MHz, 121.500 MHz: "guard" frequencies	reserved for emergency

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

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

       o  723.340 MHz: French Air Patrol communication frequency;

       o  910.000 MHz: echo test frequency. Your voice will be echoed back af-
	  ter 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;

       o  911.000 MHz: "music on hold".	The frequency continuously plays back-
	  ground music,	allowing you to	check that your	connection to the  FG-
	  Com server works.

       o  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 aero-
	  nautical charts.

       Connect to the default FGCom server, switch to the San Francisco	Inter-
       national	 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    <http://>

FlightGear			  2017-06-04			      FGCOM(1)


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