Downloading and Installing tk75
on Linux-Based Systems

This is experimental software and probably contains defects. It remains under development. When available, newer versions of tk75 will be made available for download at this web site.

Downloading and Installing tk75 for Linux

1. Download and install the free tcl and tk RPMs for your system. You can search for download locations at http://rpmfind.net. If the rpmfind server is unavailable, you can download them from the Tcl Developer Xchange at http://tcl.activestate.com or from http://www.scriptics.com.
2. Create a new installation directory on your system, e.g.,
   

   mkdir /home/username/tk75
   

3. Download the gzipped version of tk75, tk75-0.4.tgz into the installation directory you created earlier.
   
4. Decompress and untar the file after downloading it:
   

   cd /home/username/tk75
   tar -zxvf tk75-0.4.tgz
   

   This will create a new subdirectory, named tk75.0.4 and place the files there.
   
5. Define and export tk75, a new environment variable to point to the installation subdirectory just created.

   tk75=/home/username/tk75/tk75.0.4
   export tk75
   

   To make the change permanent, you must add the two lines above to your shell's profile, e.g., /home/username/.bash_profile if you use the bash shell.
   
6. Remove the .tk75rc configuration file if you have one from a previous installation.
7. To ensure the tk75 environment variable is made known within X Windows, you should logout, login again, then restart your graphical user interface before using tk75 for the first time.

Notes

1. Make sure your serial port has both read and write permissions for the user who will run the program.

   For example, I use /dev/ttyS1 as the serial port to connect the radio. If I type in a console window:

   ls -l /dev/ttyS1
   

   the output shows the permissions:

   crw-rw-rw-    1 root     uucp       4,  65 Aug 15 06:40 /dev/ttyS1
   

   Notice that /dev/ttyS1 is readable and writeable by everyone (user, group, and others).

   Login as root or run the su program to assume root privileges. Then, change the permissions and exit.

   chmod   ugo+rw   /dev/ttyS1
   exit
   

2. See the Release notes.
3. tk75 presumes the wish windowing shell is in your PATH.
4. The user who runs tk75 must have permission to read and write to the serial port device, e.g., /dev/ttyS1 (or whatever port you use). On a single workstation setup, you can grant permissions like this:

   su root
   chmod 666 /dev/ttyS1
   

5. Before using tk75, be sure the IC-R75's "initial set mode" options are set as follows:
   • CIV ADDR = 4AH
   • CIV BAUD = AUTO
   • CIV TRAN = OFF
   • CIV 731 = OFF
   See pp. 30 - 33 in the IC-R75 instruction manual to learn how to set them.
6. Power your IC-R75 receiver on before starting tk75 or else the program will freeze.