Here is what I did to install and run it, $ git clone https://github.com/bistromath/gr-air-modes.git Initialized empty Git repository in /home/superkuh/app_installs/gnuradio/gr-airmodes/gr-air-modes/.git/ remote: Counting objects: 1174, done. remote: Compressing objects: 100% (560/560), done. remote: Total 1174 (delta 794), reused 981 (delta 606) Receiving objects: 100% (1174/1174), 516.20 KiB, done. Resolving deltas: 100% (794/794), done. $ cd gr-air-modes/ $ mkdir build $ cd build $ cmake . $ make $ sudo make install $ sudo ldconfig $ l /usr/local/lib -rw-r--r-- 1 root root 54K 2012-07-16 17:06 libair_modes.so $ l /usr/local/bin/ -rwxr-xr-x 1 root root 9.0K 2012-07-16 14:10 modes_rx -rwxr-xr-x 1 root root 24K 2012-07-16 14:10 modes_gui -rwxr-xr-x 1 root root 8.7K 2012-07-16 17:06 uhd_modes.py $ export PYTHONPATH=$PYTHONPATH:/usr/local/lib/python2.6/dist-packages:/usr/local/lib/ $ env | grep PYTH PYTHONPATH=/usr/local/lib/python2.6/dist-packages:/usr/local/lib/ $ uhd_modes.py -d linux; GNU C++ version 4.4.3; Boost_104000; UHD_003.004.002-173-g31c65813 gr-osmosdr supported device types: file fcd rtl rtl_tcp uhd Using device #0: ezcap USB 2.0 DVB-T/DAB/FM dongle Found Elonics E4000 tuner Gain is 49 Rate is 4000000 Using Volk machine: ssse3_64 >>> gr_fir_ccf: using SSE (-18 0.0000000000) Type 0 (short A-A surveillance) from a5aa1c at 9175ft (speed 300-600kt) (-21 0.0000000000) Type 0 (short A-A surveillance) from a5aa1c at 9175ft (speed 300-600kt) (-22 0.0000000000) Type 11 (all call reply) from a5aa1c in reply to interrogator 0 (-22 0.0000000000) Type 0 (short A-A surveillance) from a5aa1c at 9175ft (-24 0.0000000000) Type 11 (all call reply) from a5aa1c in reply to interrogator 0 (-21 0.0000000000) Type 0 (short A-A surveillance) from a5aa1c at 9175ft (speed 300-600kt) (-22 0.0000000000) Type 0 (short A-A surveillance) from a5aa1c at 9175ft (-21 0.0000000000) Type 11 (all call reply) from a5aa1c in reply to interrogator 0 (-25 0.0000000000) Type 11 (all call reply) from aa5193 in reply to interrogator 0 (-22 0.0000000000) Type 11 (all call reply) from a5aa1c in reply to interrogator 0 (-25 0.0000000000) Type 11 (all call reply) from aa5193 in reply to interrogator 0 (-24 0.0000000000) Type 11 (all call reply) from a5aa1c in reply to interrogator 0 (-25 0.0000000000) Type 0 (short A-A surveillance) from a5aa1c at 9175ft (-23 0.0000000000) Type 11 (all call reply) from a5aa1c in reply to interrogator 0 (-24 0.0000000000) Type 11 (all call reply) from aa5193 in reply to interrogator 0 (-24 0.0000000000) Type 11 (all call reply) from a5aa1c in reply to interrogator 0 (-23 0.0000000000) Type 11 (all call reply) from a5aa1c in reply to interrogator 0 (-25 0.0000000000) Type 11 (all call reply) from aa5193 in reply to interrogator 0 (-24 0.0000000000) Type 11 (all call reply) from aa5193 in reply to interrogator 0 (-24 0.0000000000) Type 11 (all call reply) from a841bd in reply to interrogator 0 (-25 0.0000000000) Type 11 (all call reply) from aa5193 in reply to interrogator 0 (-22 0.0000000000) Type 0 (short A-A surveillance) from a5aa1c at 9175ft (-22 0.0000000000) Type 0 (short A-A surveillance) from a5aa1c at 9175ft (speed 300-600kt) (-25 0.0000000000) Type 11 (all call reply) from aa5193 in reply to interrogator 0 (-22 0.0000000000) Type 11 (all call reply) from a5aa1c in reply to interrogator 0 (-17 0.0000000000) Type 17 subtype 05 (position report) from a7a616 at (44.839069, -92.666797) (2.36 @ 242) at 7175ft (-18 0.0000000000) Type 17 subtype 09-1 (track report) from a7a616 with velocity 228kt heading 236 VS 0 (-18 0.0000000000) Type 0 (short A-A surveillance) from a7a616 at 7175ft (speed 300-600kt) (-18 0.0000000000) Type 0 (short A-A surveillance) from a7a616 at 7175ft (speed 300-600kt) (-19 0.0000000000) Type 0 (short A-A surveillance) from a7a616 at 7175ft (-20 0.0000000000) Type 0 (short A-A surveillance) from a7a616 at 7175ft (-21 0.0000000000) Type 11 (all call reply) from a7a616 in reply to interrogator 0 (-21 0.0000000000) Type 17 subtype 05 (position report) from a7a616 at (44.838547, -92.667977) (2.42 @ 242) at 7175ft (-21 0.0000000000) Type 17 subtype 04 (ident) from a7a616 of type NO INFO with ident DAL2235 (-22 0.0000000000) Type 17 subtype 09-1 (track report) from a7a616 with velocity 228kt heading 236 VS 0 (-23 0.0000000000) Type 17 subtype 09-1 (track report) from a7a616 with velocity 228kt heading 236 VS 0 (-21 0.0000000000) Type 17 subtype 05 (position report) from a7a616 at (44.837173, -92.670724) (2.58 @ 241) at 7175ft (-22 0.0000000000) Type 0 (short A-A surveillance) from a7a616 at 7175ft (-21 0.0000000000) Type 0 (short A-A surveillance) from a7a616 at 7175ft (-22 0.0000000000) Type 17 subtype 09-1 (track report) from a7a616 with velocity 228kt heading 236 VS 0 (-22 0.0000000000) Type 11 (all call reply) from a7a616 in reply to interrogator 0 (-22 0.0000000000) Type 17 subtype 05 (position report) from a7a616 at (44.836695, -92.671888) (2.64 @ 241) at 7175ft (-24 0.0000000000) Type 17 subtype 09-1 (track report) from a7a616 with velocity 228kt heading 236 VS 0 (-20 0.0000000000) Type 17 subtype 05 (position report) from a7a616 at (44.836121, -92.673144) (2.71 @ 241) at 7175ft (-19 0.0000000000) Type 0 (short A-A surveillance) from a7a616 at 7175ft (-21 0.0000000000) Type 0 (short A-A surveillance) from a7a616 at 7175ft (-22 0.0000000000) Type 17 subtype 09-1 (track report) from a7a616 with velocity 228kt heading 236 VS 0 (-21 0.0000000000) Type 17 subtype 05 (position report) from a7a616 at (44.835617, -92.674190) (2.77 @ 241) at 7175ft (-23 0.0000000000) Type 17 subtype 09-1 (track report) from a7a616 with velocity 228kt heading 236 VS 0 (-23 0.0000000000) Type 17 subtype 05 (position report) from a7a616 at (44.834926, -92.675372) (2.84 @ 241) at 7175ft (-21 0.0000000000) Type 4 (short surveillance altitude reply) from a7a616 at 7175ft (-21 0.0000000000) Type 17 subtype 09-1 (track report) from a7a616 with velocity 228kt heading 236 VS 0 (-21 0.0000000000) Type 17 subtype 05 (position report) from a7a616 at (44.833948, -92.677717) (2.97 @ 240) at 7175ft (-22 0.0000000000) Type 17 subtype 05 (position report) from a7a616 at (44.832733, -92.680141) (3.11 @ 240) at 7175ft (-22 0.0000000000) Type 17 subtype 04 (ident) from a7a616 of type NO INFO with ident DAL2235 (-22 0.0000000000) Type 17 subtype 09-1 (track report) from a7a616 with velocity 228kt heading 236 VS 0 (-23 0.0000000000) Type 11 (all call reply) from a7a616 in reply to interrogator 0 (-23 0.0000000000) Type 17 subtype 09-1 (track report) from a7a616 with velocity 229kt heading 236 VS -128 (-23 0.0000000000) Type 17 subtype 05 (position report) from a7a616 at (44.830829, -92.684148) (3.33 @ 240) at 7175ft (-25 0.0000000000) Type 11 (all call reply) from a8dd27 in reply to interrogator 0 (-22 0.0000000000) Type 17 subtype 09-1 (track report) from a7a616 with velocity 229kt heading 236 VS -128 (-22 0.0000000000) Type 17 subtype 05 (position report) from a7a616 at (44.830261, -92.685372) (3.40 @ 240) at 7175ft (-24 0.0000000000) Type 17 subtype 09-1 (track report) from a7a616 with velocity 229kt heading 236 VS 0 (-23 0.0000000000) Type 17 subtype 05 (position report) from a7a616 at (44.829575, -92.686811) (3.48 @ 240) at 7175ft (-25 0.0000000000) Type 11 (all call reply) from a8dd27 in reply to interrogator 0 (-24 0.0000000000) Type 0 (short A-A surveillance) from a8dd27 at 8225ft (-23 0.0000000000) Type 17 subtype 09-1 (track report) from a7a616 with velocity 229kt heading 236 VS 0 (-22 0.0000000000) Type 11 (all call reply) from a7a616 in reply to interrogator 0 (-22 0.0000000000) Type 17 subtype 05 (position report) from a7a616 at (44.828548, -92.689038) (3.60 @ 239) at 7175ft (-24 0.0000000000) Type 17 subtype 09-1 (track report) from a7a616 with velocity 229kt heading 236 VS 128 (-23 0.0000000000) Type 11 (all call reply) from a8dd27 in reply to interrogator 0 (-23 0.0000000000) Type 17 subtype 09-1 (track report) from a7a616 with velocity 229kt heading 236 VS 128 (-24 0.0000000000) Type 17 subtype 05 (position report) from a7a616 at (44.827384, -92.691516) (3.74 @ 239) at 7175ft (-24 0.0000000000) Type 11 (all call reply) from a7a616 in reply to interrogator 0 (-24 0.0000000000) Type 17 subtype 09-1 (track report) from a7a616 with velocity 229kt heading 236 VS 0 (-24 0.0000000000) Type 11 (all call reply) from a8dd27 in reply to interrogator 0 (-22 0.0000000000) Type 0 (short A-A surveillance) from a7a616 at 7175ft (-22 0.0000000000) Type 17 subtype 05 (position report) from a7a616 at (44.826826, -92.692454) (3.80 @ 239) at 7175ft (-23 0.0000000000) Type 17 subtype 04 (ident) from a7a616 of type NO INFO with ident DAL2235 (-24 0.0000000000) Type 17 subtype 09-1 (track report) from a7a616 with velocity 229kt heading 236 VS 0 (-26 0.0000000000) Type 17 subtype 05 (position report) from a7a616 at (44.826233, -92.693678) (3.87 @ 239) at 7175ft (-24 0.0000000000) Type 11 (all call reply) from a7a616 in reply to interrogator 0 (-24 0.0000000000) Type 17 subtype 09-1 (track report) from a7a616 with velocity 229kt heading 236 VS -128 (-22 0.0000000000) Type 17 subtype 05 (position report) from a7a616 at (44.825638, -92.694986) (3.94 @ 239) at 7175ft (-24 0.0000000000) Type 17 subtype 05 (position report) from a7a616 at (44.825103, -92.696206) (4.01 @ 239) at 7175ft (-26 0.0000000000) Type 17 subtype 05 (position report) from a7a616 at (44.824452, -92.697545) (4.09 @ 239) at 7175ft (-23 0.0000000000) Type 11 (all call reply) from a8dd27 in reply to interrogator 0 (-23 0.0000000000) Type 0 (short A-A surveillance) from a8dd27 at 7950ft (-23 0.0000000000) Type 17 subtype 09-1 (track report) from a7a616 with velocity 229kt heading 236 VS 0 (-23 0.0000000000) Type 17 subtype 05 (position report) from a7a616 at (44.822525, -92.701394) (4.31 @ 238) at 7175ft (-23 0.0000000000) Type 11 (all call reply) from a7a616 in reply to interrogator 0 (-25 0.0000000000) Type 17 subtype 05 (position report) from a7a616 at (44.822067, -92.702506) (4.37 @ 238) at 7175ft (-24 0.0000000000) Type 17 subtype 09-1 (track report) from a7a616 with velocity 229kt heading 236 VS 0 (-25 0.0000000000) Type 17 subtype 05 (position report) from a7a616 at (44.819641, -92.707672) (4.66 @ 238) at 7175ft (-25 0.0000000000) Type 17 subtype 05 (position report) from a7a616 at (44.818954, -92.709045) (4.74 @ 238) at 7175ft (-24 0.0000000000) Type 17 subtype 09-1 (track report) from a7a616 with velocity 229kt heading 236 VS 0 (-24 0.0000000000) Type 17 subtype 09-1 (track report) from a7a616 with velocity 229kt heading 236 VS -128 (-24 0.0000000000) Type 17 subtype 05 (position report) from a7a616 at (44.817764, -92.711596) (4.89 @ 238) at 7175ft (-24 0.0000000000) Type 17 subtype 09-1 (track report) from a7a616 with velocity 229kt heading 236 VS 0 (-23 0.0000000000) Type 11 (all call reply) from a8dd27 in reply to interrogator 0 (-24 0.0000000000) Type 17 subtype 05 (position report) from a7a616 at (44.813838, -92.719987) (5.36 @ 238) at 7175ft (-25 0.0000000000) Type 17 subtype 05 (position report) from a7a616 at (44.811951, -92.723694) (5.58 @ 238) at 7175ft (-25 0.0000000000) Type 17 subtype 09-1 (track report) from a7a616 with velocity 231kt heading 236 VS 0 (-25 0.0000000000) Type 17 subtype 05 (position report) from a7a616 at (44.810165, -92.727618) (5.80 @ 238) at 7175ft