I download TETRAPOL-kit on the desk of my pc concern is that I can not seem to do the works whenever I opened a black page tetrapol_tx.grc terminal opens quickly and nothing more? when I open tetrapol_tx.py like El are walking to follow to make everything work properly unless demod.py works I'm lost here may my material

linux mint 17.3 64bit

v3.7.9.2-275-g0f61e4e1 gnuradio

a key Realtek RTL-SDR

Thank you for your help

codially