WSJT-X/Darwin/ReadMe.txt

                          Notes on WSJT-X Installation for Mac OS X
                          -----------------------------------------

If you have already downloaded a previous version of WSJT-X then I suggest 
you change the name in the Applications folder from WSJT-X to WSJT-X_previous 
before proceeding.  

If you have installed a previous version of WSJT-X before then there is no 
need to change anything on your system so proceed to NEXT.  

BEGIN:

There are some system matters you must deal with first.  Open a Terminal window
by going to Applications->Utilities and clicking on Terminal.

Along with this ReadMe file there is a file:   sysctl.conf.   Drag this file to your Desktop.

WSJT-X makes use of a block of memory which is shared between different parts of
the code.  The normal allocation of shared memory on a Mac is insufficient and this 
has to be increased.   You can check the current allocation on your Mac by typing:

  sysctl -a | grep sysv.shm

If your shmmax is already at least 33554432 (32 MB) then you can close the Terminal window
and skip the next steps and go to (NEXT).

You now have to increase the shared memory allocation.  To view this file use TextEdit
to open sysctl.conf.  

This will show: 

kern.hostname=yourcomputername.local
kern.sysv.shmmax=33554432
kern.sysv.shmmin=1
kern.sysv.shmmni=128
kern.sysv.shmseg=32
kern.sysv.shmall=8192

You must now replace    yourcomputername.local  with the exact name of your computer.   To find
this use the Terminal window and type:

   sysctl -a | grep hostname

and will find your computer name.  Now use TextEdit to replace   yourcomputername.local  in this
file with the output from this command, including the .local at the end.   Save the file.
  
Now move this file into place for the system to use by typing: (Note this assumes that
you really did drag this file to your Desktop as required earlier.)

  cd $HOME/Desktop
  sudo cp sysctl.conf /etc/
  sudo chmod 664 /etc/sysctl.conf
  sudo chown  root:wheel  /etc/sysctl.conf

and then reboot your Mac.  This is necessary to install the changes.  After the
reboot you should re-open the Terminal window as before and you can check that the
change has been made by typing:

  sysctl -a | grep sysv.shm

If shmmax is not shown as 33554432 then contact me since WSJT-X will fail to load with
an error message: "Unable to create shared memory segment".

You are now finished with system changes.  You should make certain that NO error messages
have been produced during these steps.   You can now close the Terminal window.  It will
not be necessary to repeat this procedure again, even when you download an updated
version of WSJT-X.

NEXT:

Drag the WSJT-X app to your preferred location, such as Applications.

You need to configure your sound card.   Visit Applications > Utilities > Audio MIDI Setup  and
select your sound card and then set Format to be "48000Hz 2ch-16bit" for input and output.

Now double-click on the WSJT-X app and two windows will appear.  Select Preferences under the 
WSJT-X Menu and fill in various station details on the General panel.   I recommend checking the
4 boxes under the Display heading and the first 4 boxes under the Behaviour heading.

Next visit the Audio panel and select the Audio Codec you use to communicate between WSJT-X
and your rig.   There are so many audio interfaces available that it is not 
possible to give detailed advice on selection.  If you have difficulties contact me.   Note 
the location of the Save Directory.  Decoded wave forms are located here.

Look at the Reporting panel.  If you check the "Prompt me" box, a logging panel will appear
at the end of the QSO.  Two log files are provided in  Library/Application Support/WSJT-X.
These are a simple wsjtx.log file and wsjtx_log.adi which is formatted for use with logging
databases.  If you are using Yosemite, the Library folder is hidden.  Use Go on the Finder 
menu but hold down the alt key.   Library will then appear in the list of folders.

Finally, visit the Radio panel.  WSJT-X is most effective when operated with CAT control.  You 
will need to install the relevant Mac driver for your rig.   This must be located in the system
driver directory  /dev.  I use a Prolific USB-Serial Adapter to a Kenwood TS870s and the relevant
driver is  /dev/tty.PL2303-00002226.   You should install your driver and then re-launch WSJT-X.
Return to the the Radio panel in Preferences and insert the full name of your driver in the
Serial Port panel.   Such as:  /dev/tty.PL2303-00002226 or whatever driver you have.  The /dev/
prefix is mandatory.  Set the relevant communication parameters as required by your transceiver.
and click   Test CAT.  

WSJT-X needs the Mac clock to be accurate.  Visit System Preferences > Date & Time and make sure that
date and time are set automatically.   The drop-down menu will normally offer you several time
servers to choose from.

On the Help menu, have a look at the new Online User's Guide for operational hints and tips.

Please email me if you have problems.

--- John G4KLA     (g4kla@rmnjmn.demon.co.uk)