Content Program description Why TLF? Features Installation Preparations before running TLF Files Operation CT compatibility Loggging qso's Deleting qso's Editing previous qso Changing RST Changing mode Changing bands Contest commands Keyer commands Radio control Log commands Changing time and zone Score window Setting up messages Dupe check check partials / auto_complete Checking propagation DX cluster connection IP Networking for M/S and M/M operation Editing the .paras file CW contest simulator logcfg.dat Program your own contest... TLF Commands TLF options

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.

Description

TLF-0.8.20 is a console (ncurses) mode general purpose CW keyer, -logging and -contest program for hamradio. It supports the CQWW, the WPX, the ARRL-DX , the ARRL-FD, the PACC and the EU SPRINT contests (single operator) as well as a lot more basic contests, general QSO and DXpedition mode. It interfaces with a morse code generator, a number of radios, and with a DX Cluster. Tlf can project cluster data into the excellent Xplanet program, written by Hari Nair.
Contest operation mimics the popular TR-Log program for DOS, the output file is TR- as well as CABRILLO compatible. The user interface was designed with over 30 years of experience in CW contesting in mind. The program was written for console mode on purpose, to make it run also on smaller machines, or remotely via a modem link. TLF is developed under Slackware 8.0, and tested under SuSE 8.0, kernel version 2.4.19, and RH 7.2. Beta testers welcome !!!

There is now also a two-floppy version in development called debianham. That version is maintained by the Debian community, and contains a Linux mini-distribution and a copy of tlf (version 0.8.19).

. Since tlf-0.8.19 the cwdaemon-0.4.0 is fully supported, featuring direct mode for the keyboard and output to parallel and serial ports and speed and weight control from the keyboard.
Two more keyer modules are supported. The cwkeyer from Ivo, 9A3TY with output on either ttyS0 or ttyS1, and the (more flexible) cwkeyer for the parallel port from Eric, PA3FKN with output on LP0. They both work with a cw output device called /dev/cwkeyer, and can be fully controlled by TLF.

As the cwdaemon is now more flexible than the other modules, and easier to maintain (it runs in user mode rather than as a kernel module) focus of the development is on the cwdaemon.

tlf works with Hamlib-1.1.4., you find it at Sourceforge.com.

This version of tlf provides full ip networking between tlf nodes, syncing/distributing log, packet data, frequency data, local talk, serial numbers, time sync etc...

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Why TLF

• 6 - 60 wpm,
  
• 24 CW messages programmable online (you will not remember more anyway..)
  
• Auto-CQ with adjustable delay
  
• Output to the TX on /dev/ttyS0 or /dev/ttyS1 or /dev/lp0 or /dev/lp1 via the networked cwdaemon-0.4.0.
  
• Sidetone is adjustable (and optional).
  
• Weight adjustable

For CW output through the serial port keyer it writes to /dev/cwkeyer.
Interface to the radios has been kept modular, since tlf-0.7.0 the hamlib library is supported, which enables control of various popular rigs.

Tlf is now fully networked, with an extremely simple setup procedure... You have to see it to believe it..!

HW Interface to the trx:

 /* cwdaemon  parallel port keyer circuitry:


                                        ----o  CW out to TRX
                                       |
                                       |
                                       | C
                         1k       B | /
   SELECT IN      o----/\/\/\-------|/      BC547, 2N2222
   (pin 17)                         |\
                       		      \
				       | E
                                       |
   STROBE         o--------------------
   (pin 1)


   GROUND         o------------------------o  GROUND
   (pin 18)

Cwdaemon serial port circuitry (DB9 connector):
-----------------------------------------------

                                          +---------+--------o CW out to TRX
                                         /          |
  DTR      4k7                      B  |/ C         |
   o------|===|-----+------+-----------|      BC547,|2N2222, etc.
(pin 4)             |      |           |\ E         |
                   ---    ---            \         ---
 	  1n4148   / \    | | 4k7         +        / \ 1n4148
                   ---    | |             |        ---
                    |     ---             |         |
 GROUND             |      |              |         |
   o----------------+------+--------------+---------+--------o GROUND
(pin 5)



*/
  Back to contents 



 

Installation

Install the CW driver

Testing cwdaemon

*******************************************
#!/bin/sh

old_tty_settings=$(stty -g)
stty -icanon
trap 'stty "$old_tty_settings"; exit 0' INT

echo "Press (CTRL-C) to interrupt..."

while true; do
  Keypress=$(head -c1)
  echo $Keypress | nc -q0 -u localhost 6789
done
*******************************************

Install the Hamlib library

Install the TLF program.

• mkdir contestname
• copy a logcfg.dat file into it
• edit the logcfg.dat file (call, logfile, mults. points) to suit your needs
• start tlf with tlf. Normally startup messages are suppressed to enable a quick restart of the program.
• If you start tlf for the first time in a directory you will get messages from the services which are started. If you want that later on (for debugging purposes) start tlf with tlf -v.
• If you want to know which version you are running start with tlf -V.

TLF needs some bash commands to work: less, joe..

Preparation

Make sure the CW kernel module or the cwdaemon (as root) runs before starting tlf if you want to use the keyer....
Start the program (tlf).

FILES

 call -r packetinterface | tee tlfworkingdirectory/clfile

Operation

• CT compatible synonyms for those commands used most often in CT
• Use of the ENTER key for logging qso's

• ENTER will log the qso
• Insert will send message F2 (to be programmed as @ 5NN 'yourzone')
• "+" will send F3 (QRZ message, e.g. TU 'yourcall') and log the qso, instead of toggling between CQ mode and S&P mode (there is no S&P mode in CT).

• If check partials is on, and auto_complete is active, the call will be automatically completed. E.g. when you type PA0RC, it will automatically complete to PA0RCT. The same for KC1X?, W3LP? etc....
• Backspace will remove character from the end of the call
• ESCAPE will remove the call completely, and also erase the exchange field
• left_arrow will allow you to edit the call in the input field (enter edit mode)
• As soon as you have entered edit mode (colour of the call field changes )you can overwrite characters in the call field
• In edit mode you can use Delete to delete characters
• To Insert characters , type the Insert key first. You can leave insert mode with enter, tab or escape.
• In edit mode, ctrl-A will jump to the beginning of the call, ctrl-E to the end.
• In edit mode, Backspace removes the character before the cursor, Delete deletes the charactor under the cursor.
• If after a Delete or an Insert you leave edit mode with TAB, the auto_complete function is switched off for the running qso. This enables you to change a call when it is locked by auto_complete because it is a unique call in the database
• If after a Delete or an Insert you leave edit mode with ESCAPE or ENTER, auto_complete is not switched off.
• If the check window is on, it will show the last qso's in the log (on the contest bands)
• The bottom status line will show country and qrb info, as well as the local time of the station..
• When you press Ctrl-p you will get a screen with the muf curve based on the number of sunspots, the distance, bearing , sunset, sundown etc. Any key will get you back to where you came from.
• You can go to the exchange field with SPACE or TAB or ENTER.
• For cqww and arrl_ss contests the exchange input is intelligent, incl. call update in the exchange field. E.g. in SS you can enter 23A 98OH and tlf knows what you mean. In cqww, 1-character zone input is possible. "1 KL7AC " will update the call in the call input field (for this CALLUPDATE has to be set in logcfg.dat).
• ENTER will log the qso in SSB mode, and also if you are in CW and qso (non-contest) mode.
• In case you want to log a cw qso during a contest without cw output, you can use "\" (backslash).

QSO B4 message

Deleting qso's

Editing the 5 previous qso's

• Switch bands on the radio - tlf will follow
• Switch bands on tlf - the radio will follow
• Enter a frequency in tlf - the radio will jump to that qrg
• Pick a frequency from bandmap or spot list - the radio will go there
• If you have a frequency int the MEMory, press # - the radio will go there

• Switch between Run mode and S&P mode: +(CT mode has no S&P)
• Confirm last serial nr: "_" (underscore)
• Confirm last call: "="
• Show list of zones yet to be worked: ":zones"
• Show list of countries left over: ":cty"
• Show propagation: "ctrl-p"
• Switch to keyboard: "," or "ctrl-k"

• Change the speed with Alt-v and then Up-arrow or down-arrow. When the window is gone you can see the speed in the upper status line (S=45)
• Change the weight with Alt-w, Values from -5 to +5, ENTER.
• Change the auto_cq delay with page-up and page-down. This only works if the call input field is empty. If it is not, you will change the RST value. Set it to the total length of the message + the receive time. ! You can see the value in te upper status line (D=11)
• Start the auto_cq with F12. Or if contest mode is on, and input field is empty, with ENTER.
• Switch to keyboard: "," or "ctrl-k" The above commands also work when the keyboard is on.
• Change the sidetone frequency with ":tone". A value of 0 will switch sidetone off.

• The radio interface is switched on with the following commands in logcfg.dat:
  RADIO_CONTROL #switch the interface on
  RIGPORT=0 #use /dev/ttyS0, /dev/ttyS1 also supported
  RIGMODEL=351 #Hamlib index number of your rig, this is the OMNI VI plus
  RIGSPEED=2400 #1200 - 56k tested
  #
  RIT_CLEAR # resets rig after qso is logged (only if your radio and Hamlib support it)
  #
  #SHOW_FREQUENCY # shows large frequency display if score window is off
  #





• See your trx frequency on the right hand side of the screen just below the log line.
  E.g. TRX: 10105.0



• Tlf will follow the bandswitch of the trx.
• Fast qsy by just entering the new qrg into the empty call input field in kHz (e.g. 3505).
• Remember your run frequency by putting it into the memory with "#". The memory display will pop up and show the frequency you can return to by again entering "#".
• Grab a dx spot. This only works if you have a radio interface program for your type of trx running, and if you are connected to a cluster and have the bandmap or spot window on screen. Just enter part of the call of the dx station (e.g. 6W when the call is 6W/DJ0LN/P), enter "ctrl-g" (for "grab") and you will see the trx magically qsy to the spot frequency, where you can loose valuable time in the pileup. :-}
• Add a spot to the list by entering a Call into the call field and pressing Ctrl-A. This works with band map as well as spot list.
• If you set the RIT parameter (:RIT), the RIT will be reset after a qso is logged.This only works if your radio supports the set_rit function!!!


• 
  
  Ctrl-f will give you a window in which you can change the TRX frequency in 100Hz steps (with up-arrow, down_arrow). Or left-arrow, right-arrow (20 Hz)

Back to contents

• Look at the log with ":view". It starts a new shell with LESS.
  You can also simply use up-arrow to move the cursor upwards...
• Edit the log with ":edit". It starts a new shell with JOE, VI or E3. Other editors on request...
• If that is not enough you can start an empty shell with "!", and grep the logfile, copy it, etc...

United States:            05:  08:  NA:   43.00:    87.90:     5.0:  K:

• F1= CQ call (run mode) or DE CALL (S&P mode). The "DE" can be switched on or off (:demode)
• F2 = free (normally "@ DE %"
• F3 = runmode report (e.g. @ [ 14). If # is used, the serial nr can be SHORT (TT1)
• F4 = free (normally "73" or "TU")
• F5 = free (normally "@"
• F6 = free (normally "%"
• F7 = free (normally "B4"
• F8 = free e.g. "AGN"
• F9 = free e.g. "?"
• F10 = free e.g. "QRZ?"
• F11 = free e.g. "UR CL?"
• F12 = auto_cq message, e.g. "TEST PA0RCT"
• S&P TU msg = e.g. "TU [14"
• Run TU msg = e.g. "TU %"
• alt-0 to alt-9 can be programmed in the logcfg.dat file

• % for YOURCALL
• @ for HISCALL
• [ for RST
• # for serial nr.
• - lower keyer speed by 5 wpm (parallel interface only !)
• + increase keyer speed by 5 wpm (e.g. " ++5NN--#") (parallel interface only)

• On what bands you worked the station, and what the exchange was
• If the station is a dupe, the color will be red and the terminal will beep.
• On what bands you worked the country already
• On what bands you worked the zone already
• In case of other multipliers, on what bands they were worked.
• If the exchange is the same for every band, it is automatically filled into the exchange field

• PARTIALS - switches the check partial function on (max. 9 calls)


• USEPARTIALS - enables the auto_complete function


• MANY_CALLS - shows a large window with up to 50 calls

• Built-in Telnet client with auto-connect
• Built-in terminal for TNC or MODEM for ttyS0 or ttyS1 (2400 Bd fixed)
• FIFO in the working directory to hook up with e.g. ax25 based connections

• :PACket (in tlf) = goto terminal
• : (in terminal ) = goto tlf
• pg-up = goto view mode
• up-arrow, down-arrow = scroll in view mode
• ENTER = goto edit mode

• Goto the working directory and start a telnet session in a new terminal.
• start this session with telnet node | tee -a clfile



• Connect to the dxcluster, e.g. using call with

  call -r interface | tee clfile

• For filtering, bandmap etc to work, the lines have to start with: "DX de", Escape characters at the start of the line have to be filtered out (e.g. by using "|cut -c 7-97"

• :cluster - full cluster content (filter with ":fil")
• :spots - only DX spots in order of time
• :map or "." (dot) - only spots for this band, sorted in frequency
• :PACket - Go to the packet terminal
• Ctrl-B - Send msg to the terminal (on node connected to cluster through terminal only)
• Ctrl-A - add your own spot to the list (if radio interface is not present the freq can be input manually)
  if the LAN is active the spot will be sent to all nodes
• Ctrl-G - grab the spot: type a partial call from the spot or map window into the call field first.
• :FILter - the filter has 4 functions: 0=none, 1=garbage out, 2=announcements out, 3=spots only
  

Bandmap commands:
• Enter the bandmap with :map or "." (dot)
• When you are in the bandmap the name changes to BANDMAP
• Use "." to change to NEEDED (only countries you still need to work)
• Use pg-up, pg-dwn, up, down to scroll the map
• A "+" sign appears if there is an offset from start of list
• Leave the bandmap with ESCAPE
• Outside the bandmap you can Grab a spot by entering a few characters into the call input field and typing ctrl-g.
  The full call will appear in the input field, and the trx will go to the spot frequency (only if trxcontrol is working).

Spots younger than 10 minutes are marked!! Double spots are sorted out...

The bandmap sorts the frequencies and flags the ones you don.t need (yellow). You can also switch this display to NEEDED, so you will see only those countries you still have to work!!

You can use Hari Nair's Xplanet program to show the spots in their location on the globe. To show azimuthal projection centred on Eersel the Netherlands you start Xplanet with: xlanetbg -wait 10 -window -geometry 300x300 -markers -markerfile /home/rein/tlf/test/tlfmarkers -projection azimuthal -longitude 5 -latitude 51 (see the xplanet documentation for an explanation). set the following line in logcfg.dat: MARKERCALLS=tlfmarkers to show the calls spotted on the cluster (your directory may vary, here it is the directory you run tlf from....) The display will now update every 10 seconds...

The udp protocol is used for minimum protocol overhead. Tests with several tlf nodes have shown that using the tcp protocol does not cure a network problem, it just adds protocol overhead. The tlf protocol uses short messages, which will not exceed the limit where fragmentation sets in. (udp buffer length is 256 bytes).

Each node has 1 receiver on udp port 6788, and sends the data it generates to the destination nodes. The list of destination nodes is defined in logcfg.dat of every node.

The message format is very simple: < THISNODE > < MESSAGE TYPE > <...data string...>

THISNODE is a character(A to H) and message type is also a character (1 to 9).

TLF network functions

Log data
Every tlf node has a copy of the complete log database. This has several advantages.
First, having the log at several places in the network reduces the risk of loosing it...
Second, it allows using the full power of the log search function (exchange recall and multiplier search).

Packet data
Packet data is available on all nodes, enabling quick spot access. This also means that only one node needs a packet connection...


Add spot data
Enables local spotting and bandmap preload from any node on the network, even remotely on the internet...

Frequency data
Every 30 seconds the node broadcasts its operating frequency (if trx control with Hamlib is used), or the band it is on. This greatly  simplifies passing mults to a different band !! A display window shows what qrg the nodes are working...(:FRE or ALt-J)

Here you see that station A is on 7010 kHz and Station C (no trx control) is on 20 meters.

Talk data


By just typing

Alt-g please 2 beers for 80 meters

,  this message is broadcast to all nodes on the list. A display window shows the last 5 messages received... (with ctrl-t or Alt-g)





Present serial number

Used when a serial number is used for the exchange (SERIAL_EXCHANGE is set in logcfg.dat), e.g. in the wpx contest. As soon as a serial number is sent, it is blocked on the other nodes.... This bridges the time between sending the exchange and actually  logging the qso, mostly preventing that serial numbers are given out twice!!

Present utc time

When TIME_MASTER is set in logcfg.dat the station broadcasts the actual utc time to the other nodes.
When you do this, the other tlf nodes will use this time. The time receive function has a smoothing filter, so one wrong number will not kick the node out of sync.

Setup for the LAN functions

Monitoring

Back to contents

AR	*
BT	=
SK	<
KN	(
SN	!
AS	&
BK	>

Command Overview

Options

Logcfg.dat file

OTHER CONTESTS

#################################
#                               #
#   TLF-LOGCFG.DAT v. 0.8.20    #
#                               #
#  Uncomment the options you    #
#  want to enable. See tlf.doc  #
#  for a description of the     #
#  options. You can keep diff-  #
#  erent versions for different #
#  contests. I keep separate    #
#  configuration files for      #
#  each contest. If you enable  #
#  more than 1 mutually exclu-  #
#  sive options, the last one   #
#  will be efective.            #
#                               #
#                               #
#################################
#
#CTCOMPATIBLE
#
#################################
#                               #
#   EDITOR                      #
#                               #
#################################
#
EDITOR=joe
#EDITOR=vi
#EDITOR=e3
#
#################################
#                               #
#  CALL                         #
#                               #
#################################
#
CALL=PA0RCT
#
#################################
#                               #
#  CONTEST                      #
#                               #
#  Uncomment the contest you    #
#	want (remove "#")       #
#			        #
#################################
#CONTEST=cqww
#CONTEST=wpx
#CONTEST=sprint
#CONTEST=arrldx_usa
#CONTEST=arrldx_dx
#CONTEST=arrl_fd
#CONTEST=pacc_pa
#CONTEST=pacc_dx
#CONTEST=dxped
#CONTEST=qso
#CONTEST=arrl_ss
CONTEST=arrl_160m_dx
#
#CQWW_M2
#
#################################
#                               #
#  LOGFILE                      #
#                               #
#################################
#
LOGFILE=arrl160.log
#
#
#################################
#                               #
#  Time offset from UTC         #
#                               #
#################################
#
TIME_OFFSET=1
#
#################################
#                               #
#  LAN PORT                     #
#                               #
#################################
#  addnode only OTHER nodes !!
#
ADDNODE=192.168.0.3
#ADDNODE=192.168.1.2
#
THISNODE=C
#
LAN_DEBUG
#
#################################
#                               #
#  KEYERPORT                    #
#                               #
#################################
#
NETKEYER
#NETKEYERPORT=6789
#NETKEYERHOST=127.0.0.1
#
#################################
#                               #
#  KEYERPARAMETERS              #
#                               #
#################################
##---speed (6 ... 60 wpm)
SPEED=32
##---weight (-5 ... 5 ms)
WEIGHT=3
##---txdelay (ms)
TXDELAY=51
##---sidetone (200...800, 0 = mute)
TONE=600
#################################
#                               #
#  PACKET INTERFACE             #
#                               #
#################################
#
#TELNETHOST=217.126.142.43
#
#
#TELNETPORT=8000
#
#TNCPORT=0      #ttyS0
#TNCPORT=1      #ttyS1
#TNCSPEED=2400
#
FIFO_INTERFACE
#
#################################
#                               #
#  RADIO CONTROL                #
# (comment out if not present)  #
# Rigmodel = Hamlib index       #
#################################
#
#RADIO_CONTROL
#RIGMODEL=351
#RIGSPEED=2400
#RIGPORT=0       #ttyS0
#RIGPORT=1      #ttyS1
#
#RIT_CLEAR
#
#SHOW_FREQUENCY
#
#################################
#                               #
#  INFORMATION WINDOWS          #
#                               #
#################################
#
#CLUSTER
#BANDMAP
SPOTLIST
#FILTER
#
SCOREWINDOW
#
CHECKWINDOW
#################################
#                               #
#  CHECK PARTIAL FUNCTION       #
#                               #
#################################
#
PARTIALS
#USEPARTIALS
#MANY_CALLS
#
#################################
#                               #
#  CONDX (info for muf calc.)   #
#                               #
#################################
#
SUNSPOTS=61
SFI=120
#
##################################
#                                #
#  Messages F1= to F12=          #
#  Message CW_TU_MSG=            #
#  Message S&P_TU_MSG=           #
#                                #
#  % = call		         #
#  @ = hiscall                   #
#  # = serial                    #
#  [ = RST                       #
#  + = increase cw speed         #
#  - = decrease cw speed         #
#     (works only with parport   #
#       interface)               #
#                                #
##################################
#
F1=CQ DE % TEST
F2=@ DE %
F3=@ ++5NN--
F4=TU 73
F5= @
F6=%
F7=@ SRI QSO B4 GL
F8=AGN
F9= ?
F10= QRZ?
F11= PSE K
F12=++++TEST---- % %
#
CW_TU_MSG=TU %
S&P_TU_MSG=TU 5NN
#
ALT_0=message alt 0
ALT_1=nr is # #
ALT_2=prec?
ALT_3=ur section?
ALT_4=ck is 83 83
ALT_5=sec is KS KS
#ALT_6=
#ALT_7=
#ALT_8=
#ALT_9=
#
#SHORT_SERIAL
#LONG_SERIAL
#
#SEND_DE
#
#################################
#                               #
#  CONTEST PARAMETERS           #
#    (roll your own... )        #
#################################
#
CONTEST_MODE
#
#CALLUPDATE
#
#MIXED
#
#-------------------------------
# Can exchange be recycled?
# e.g. impossible if it is a serial
# number...
#
RECALL_MULTS
#
# format serial number: (001)
#
#SERIAL_EXCHANGE
#
#################################
#                               #
#  POINTS LIST  	        #
#                               #
#################################
#
#ONE_POINT
#TWO_POINTS
#THREE_POINTS
#
USE_COUNTRYLIST_ONLY
COUNTRYLIST=ARRL_160:VE,W
COUNTRY_LIST_POINTS=2
#
#MY_COUNTRY_POINTS=2
#MY_CONTINENT_POINTS=5
#DX_POINTS=10
#
#################################
#                               #
#  MULTIPLIER LIST	        #
#                               #
#################################
#
#WYSIWYG_MULTIBAND
#   (makes its own multiplier list
#    on the go...)
#
#WYSIWYG_ONCE
#   (same, but mults do not count
#    per band..)
#
#COUNTRY_MULT
#
MULT_LIST=arrlsections
#
#MULT_LIST=us_canada_states
#
SECTION_MULT
#SERIAL_SECTIONS
#DX_&_SECTIONS

#POWERMULT_5
#POWERMULT_2
#
#PORTABLE_MULT_2
#
####### MARKERS #################
#
MARKERS=tlfmarkers
#
####### END #####################

#   TLF-LOGCFG.DAT v. 0.8.20    #
#                               #
#   ARRL 160 M CONTEST
#        DX SIDE
EDITOR=joe
CALL=PA0RCT
CONTEST=arrl_160m_dx
LOGFILE=arrl160.log
TIME_OFFSET=1
ADDNODE=192.168.0.3
THISNODE=C
LAN_DEBUG
NETKEYER
SPEED=32
WEIGHT=3
TXDELAY=51
TONE=600
FIFO_INTERFACE
RADIO_CONTROL
RIGMODEL=351
RIGSPEED=2400
RIGPORT=0      
RIT_CLEAR
SPOTLIST
SCOREWINDOW
CHECKWINDOW
PARTIALS
SUNSPOTS=61
SFI=120
F1=CQ DE % TEST
F2=@ DE %
F3=@ ++5NN--
F4=TU 73
F5= @
F6=%
F7=@ SRI QSO B4 GL
F8=AGN
F9= ?
F10= QRZ?
F11= PSE K
F12=++++TEST---- % %
CW_TU_MSG=TU %
S&P_TU_MSG=TU 5NN
CONTEST_MODE
RECALL_MULTS
#
USE_COUNTRYLIST_ONLY
COUNTRYLIST=ARRL_160:VE,W
COUNTRY_LIST_POINTS=2
#
MULT_LIST=arrlsections
SECTION_MULT
#
MARKERS=tlfmarkers
#

BUGS/TODO

Licence and copyright

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA