frequency=$(zenity --list 2>/dev/null --title="Choose the frequency for SSTV decoding:" --column="kHz" --column="Use"145800"ISS"434900"CubeSatSim" Other "Choose another frequency" SSTV "Test SSTV decoding with WAV file")
frequency=$(zenity --list 2>/dev/null --width=410 --height=220 --title="Choose the frequency for SSTV decoding:" --column="kHz" --column="Use"145800"ISS"434900"CubeSatSim" Other "Choose another frequency" SSTV "Test SSTV decoding with WAV file")