De ether hangt vol met radiogolven: radio & tv uitzendingen, mobiele telefonie, wifi. En communicatie vanuit vliegtuigen. Peter vertelt iets over Software-Defined-Radio (SDR). En hij laat zien hoe je met een goedkope Windows USB TV dongle op een Linux computer het vliegverkeer in kaart kunt brengen.

1. GNU Radio
& digitaal vliegtuig spotten
door Peter Martin
www.db8.nl / @pe7er
Linux User Group Nijmegen
10 februari 2015

2. Joomla User Group Den Bosch – 1 december 2014Joomla User Group Den Bosch – 1 december 2014
1. Radio
2. EZCAP DVB-T
3. GNU Radio
4. gqrx
4. dump1090
Overzicht

3. Radio

4. Draadloze telecommunicatie waarbij
een radiozender boodschappen verspreidt
in de vorm van radiogolven.
Radiogolven = radiofrequente straling
= elektromagnetische straling met golflengten
uiteenlopend van ruwweg duizend kilometer tot een
millimeter

6. Description - Mode Frequency
12m Amateur Radio (AM/FM/CW/USB/LSB) 24.890 - 24.990MHz
CB Radio (AM/FM/USB/LSB) 26 - 28MHZ
10m Amateur Radio (AM/FM/CW/USB/LSB) 28.400 - 29.700MHz
6m Amateur Radio (AM/FM/CW/USB/LSB) 50 - 52MHZ
Civil Airband (AM) 117.975 - 136.000 MHz
2m Amateur Radio (AM/FM/CW/USB/LSB) 144 - 146MHZ
Marine Band (FM) 156 - 163MHz
PMR (Private Mobile Radio) (NFM) 163 - 185MHZ
Military Airband (AM) 200 - 399MHZ
70 cm Amateur Radio (AM/FM/CW/USB/LSB) 430 - 440MHZ
PMR and Security (NFM) 440 - 470MHZ

7. Ezcap DVB-T

8. This perfect DVB-T digital TV USB 2.0 dongle allows you to watch your favorite TV shows and play
FM radio and DAB digital radio on your computer. Via this dongle, you can record them and convert
them into MP3 format. The Time-shift function also allows you to pause and instantly replay your
favorite scenes. With the Ezcap USB DVB-T Stick with FM&DAB, you can listen to FM radio and
digital DAB radio, and record them to WMA audio format into your computer.
- Package includes:
- 1 x TV receiver
- 1 x Antenna
- 1 x Software drive
- 1 x Stand base
- 1 x Remote controller (1 x CR2025 included)
- 1 x English manual
Dimensions: 3.54 in x 1.06 in x 0.55 in (9.0 cm x 2.7 cm x 1.4 cm)
Weight: 0.81 oz (23 g)
Ezcap DVB-T

9. - Chipset: RTL2832
- Receiving frequency: DVBT 48.25~863.25MHz
- Punctured codes: 1/2, 2/3, 3/4, 4/5, 5/6, 7/8
- Bandwidth: 6/7/8MHz auto select for DVBT
- USB 2.0 standard
- Max No. Section filtering: 32PIDs
- Stream capture: PES & TS
- Video Format: MPEG-II Main Profile & Main Level
- Audio Format: MPEG-II Audio Layer I & II
- FM range: 78~108MHz
Ezcap DVB-T

10. Driver installeren
$ dmesg
[56.085860] usb 1-1.1: new high-speed USB device number 7 using ehci_hcd
[56.188795] usb 1-1.1: New USB device found, idVendor=0bda, idProduct=2838
[56.188800] usb 1-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[56.188804] usb 1-1.1: Product: RTL2838UHIDIR
[56.188807] usb 1-1.1: Manufacturer: Realtek

11. Juiste Build tools
sudo apt-get update
sudo apt-get upgrade
sudo apt-get install git-core git make cmake libusb-1.0-0-dev
sudo apt-get install build-essential pkg-config

12. Driver compileren
$ git clone git://git.osmocom.org/rtl-sdr.git
Compileren:
$ mkdir build
$ cd build/
$ cmake ../ -DINSTALL_UDEV_RULES=ON
$ make
$ sudo make install
$ sudo ldconfig
$ sudo cp rtl-sdr.rules /etc/udev/rules.d
$ sudo reboot
$ rtl_test -t

13. GNU Radio

14. GNU Radio
a free & open-source software development toolkit that
provides signal processing blocks to implement
software radios.
widely used in hobbyist, academic and commercial
environments to support both wireless communications
research and real-world radio systems.
GNU Radio is licensed under the GNU General Public
License (GPL) version 3.

15. Installatie
$ sudo apt-get install gnuradio
of vanuit source:
git clone http://gnuradio.org/git/gnuradio.git

16. Vanuit source
Bijv in onder /home/ van user een map /linuxnijmegen
$ git clone http://gnuradio.org/git/gnuradio.git
Compileren (+- 30 min) levert foutmelding op.
Vanuit andere branch compileren?
$ git branch -a
$ git checkout maint

17. Vanuit source
$ mkdir build
$ cd build
$ cmake ../
$ make && make test
$ sudo make install

18. gqrx - Software
Defined Radio

19. gqrx

20. Vanuit source
Gqrx - http://gqrx.dk/
$ git clone https://github.com/csete/gqrx.git
$ mkdir build
$ cd build
$ qmake ..
$ make

21. Vanuit source
“Missing gnuradio-osmosdr”
http://sdr.osmocom.org/trac/wiki/rtl-sdr
$ git clone git://git.osmocom.org/gr-osmosdr
$ cd gr-osmosdr/
$ mkdir build
$ cd build/
$ cmake ../
$ make
$ sudo make install
$ sudo ldconfig

22. dump1090

23. dump1090
vanuit source
https://github.com/MalcolmRobb/dump1090
$ git clone git://github.com/MalcolmRobb/dump1090.git
$ cd dump1090/
$ sudo make
./dump1090 --net --net-http-port 8080
of
./dump1090 --interactive --net

24. Vragen?
Peter Martin
e-mail: info at db8.nl
website: www.db8.nl
twitter: @pe7er
Presentatie: http://www.db8.nl

25. Gebruikte foto's
KLM B747-400 PH-BFK - Humphrey Manusiwa, 2012
http://commons.wikimedia.org/wiki/File:KLM_B747-400_PH-BFK.jpg
Philco radio model PT44 front - Armstrong1113149, 2009
http://commons.wikimedia.org/wiki/File:Philco_radio_model_PT44_front.jpg
WWVNBSRadioStation 001 - National Institute of Standards and Technology, 1920
http://commons.wikimedia.org/wiki/File:WWVNBSRadioStation_001.jpg
Libelle Portable Radio receiver-tuner pic3 - AlfvanBeem, 2012
http://commons.wikimedia.org/wiki/File:Libelle_Portable_Radio_receiver-tuner_pic3.JPG
Dump1090 - Philippe Teuwen
http://wiki.yobi.be/wiki/RTL-SDR