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gnuradio

gnu radio files

Coursera DSP

https://www.coursera.org/course/dsp

HOWTO: Radio

###use rtl-sdr

  1. build gnuradio (build_gnuradio script)
  2. update udev rules
  3. plug in DVB-T device, run
  4. remove unused driver w/ sudo rmmod dvb_usb_rtl28xxu rtl2832

###scan for frequencies:

rtl_power

rtl_power -f 88M:108M:125k fm_stations.csv
python heatmap.py fm_stations.csv fm_stations.png

RTLSDR-Scanner

/home/adam/bin/RTLSDR-Scanner/src/rtlsdr_scan.py
getSigStations.R

###listen to fm rtl_fm -f 104.5M -s 192000 -r 48000 - | aplay -r 48k -f S16_LE -t raw -c 1

###GNURadio Companion run gnuradio-companion, then open:
0) visual a frequency -> waterfall.grc

  1. Narrowband(police) -> narrow2.grc
  2. FM -> fm_examples_works.grc
  3. Airband -> airband_and_am.grc

###Moniter airtraffic with ADSB: 0) download dump1090 from github 2) dump1090 --net --enable-agc

HOWTO:GPS

Enable gps

sudo gpsctl -n /dev/ttyUSB0
sudo stty -F /dev/ttyUSB0 ispeed 4800
sudo gpsd -D 5 -N -n /dev/ttyUSB0 > /dev/null

print out coords

sudo awk -F"," '/GGA/ {print $3,$5}' /dev/ttyUSB0
sudo cat /dev/ttyUSB0 > ./data/gps.track.file

View position on map in realtime

foxtrotgps gpsdrive

log and view gpx (saved coord info)

gpxlogger -f ./data/test.gpx
gpxviewer ./data/test.gpx

Use radio monitering w/ gps:

/home/adam/bin/RTLSDR-Scanner/src/rtlsdr_scan.py

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