place ten tec files in home directory
run for tentec the xclass  file commands as follows.
gunzip -cd xclass-0.7.4.tar.gz | tar -xvf -
cd xclass-0.7.4
./configure
make clean
make
make install
 then switch back to home and run
 gunzip -cd rx320-0.4.2.tar.gz | tar -xvf -
cd rx320-0.4.2
make
 go to root  and run in terminal
chmod 777 /dev/ttyS0
stty crtscts < /dev/ttyS0
this enables software to run the terminal's flow control.
With the new  rx320-0.4.2 version now available you can  choose the serrial port in the configure option if you right click n the radio surface.