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--- project:sdr [2016/03/20 01:20]
over23 [Prozkoumat]
+++ project:sdr [2016/12/04 13:07]
embargo [Prozkoumat]
@@ Line 6: / Line 6: @@
   * Tips and Tricks: http://gqrx.dk/doc/practical-tricks-and-tips
+==== HAM Radio ====
+  * tohle bude na testu: <del>http://www.crk.cz/PREFC</del> mrtvý odkaz
+  * [[http://www.ctu.cz/cs/download/zkousky-prukaz/amaterske_zkousky_faq_03-2009.pdf|Otázky pro písemné testy]] pro získání jednotlivých druhů průkazů amatérské radiokomunikační služby včetně správných odpovědí.
+  * HAM krouzek v Ova: v po-čt 9-12h se dostavit na VŠB, FEI, Martin Tomis, EA109, kde tě zaregistruji do klubu, ale k dědovi Novákovi můžeš i bez toho... klubový poplatek je tuším 50Kč/rok [[http://radioklub.vsb.cz/|Radioklub VŠB]]
 ===== Prozkoumat =====
   * http://kmkeen.com/rtl-demod-guide/
   * http://eliasoenal.com/2012/05/24/multimonng/
   * https://www.linux.com/news/software/developer/17942-socat-the-general-bidirectional-pipe-handler
+  * JACK: http://kacper.blog.redpill-linpro.com/archives/508
+  * GQRX Scanner module: https://github.com/khaytsus/gqrx-scan
+  * Poslouchani letadel, vceten anteny: http://www.rtl-sdr.com/adsb-aircraft-radar-with-rtl-sdr/
+  * velky poratl HAM stranek v CR-SK: http://www.ok2kkw.com/ok.htm
+  * http://www.delta-team.cz/co-se-pise/ham/frekvence-ruznych-sluzeb.htm
+  * http://forum.autoforum.cz/viewtopic.php?f=14&t=1063 <-- zajimave frekvence
+  * http://599.cz/view.php?cisloclanku=2012070701 - dipol pro zacatecniky, a zrejme i dobry web
+  * http://websdr.org/ - WebSDR software - poslouchame SDR radio pres web
+  * https://github.com/simonyiszk/openwebrx - alternativa k WebSDR
+  * https://github.com/kpreid/shinysdr - dalsi alternative k WebSDR
+===== Anteny =====
+  * https://www.eshop-yachtmeni.cz/antena-sd-1300-u-scan/
+  * http://599.cz/view.php?cisloclanku=2012070701 - dipol pro zacatecniky, a zrejme i dobry web
+  * http://dl1dbc.net/SAQ/miniwhip.html - PA0RDT Mini Whip active antenna
+===== Examples of Digital modes =====
+  * http://hfradio.org.uk/html/digital_modes.html
 ===== Gqrx =====
 <code>
@@ Line 35: / Line 56: @@
 $ brew instal socat
 </code>
+===== 1090 MHz : flight radar =====
+   * pretty complex article with even DYI antenna designs: http://www.rtl-sdr.com/adsb-aircraft-radar-with-rtl-sdr/
+   * easy multi-platform Flight Radar : https://github.com/MalcolmRobb/dump1090
+==== dump1090 ====
+<code>
+mkdir ~/sdr; cd ~/sdr
+git clone https://github.com/MalcolmRobb/dump1090
+cd dump1090; make
+./dump1090 --interactive --net
+</code>
+   * more info README.md or dump1090 --help
+   * in web browser : http://localhost:8080/
+===== Scanners =====
+   * http://eartoearoak.com/software/rtlsdr-scanner
+===== GnuRadio on BannanaPI =====
+  * http://gnuradio.4.n7.nabble.com/Compiling-GNURadio-on-BananaPI-td51866.html
+edit like this
+   deb http://mirrordirector.raspbian.org/raspbian/ jessie  main contrib non-free rpi
+patch whole system
+   apt-get update
+   apt-get upgrade
+apt gnuRadio
+   apt-get install gnuradio
+==== DSD : Digital Speech Decoder ====
+   * http://www.george-smart.co.uk/wiki/Digital_Speech_Decoder
+not tested:
+<code>
+sudo apt-get install cmake
+cd ~
+mkdir dsd-src
+cd dsd-src
+wget -O mbelib.zip https://github.com/szechyjs/mbelib/archive/master.zip
+wget -O dsd.zip https://github.com/szechyjs/dsd/archive/master.zip
+unzip mbelib.zip
+unzip dsd.zip
+rm *.zip
+cd mbelib-master
+mkdir build
+cd build
+cmake ..
+make
+sudo make install
+sudo ldconfig /usr/local/lib
+cd ~/dsd-src/dsd-master
+mkdir build
+cd build
+cmake ..
+make
+sudo make install
+add snd-pcm-oss to /etc/modules
+amixer cset numid=3 1
+<reboot>
+</code>
+testme:
+<code>
+dsd -i /dev/dsp -n -v 1
+</code>
+showme what you can do:
+<code>
+over@picka ~/digital_speech/dsd/build $ dsd -a
+Digital Speech Decoder 1.7.0-dev (build:v1.6.0-86-g7ee04e5)
+mbelib version 1.3.0
+xcb_connection_has_error() returned true
+ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.front
+ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear
+ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfe
+ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.side
+ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.surround21
+ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.surround21
+ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.surround40
+ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.surround41
+ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.surround50
+ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.surround51
+ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.surround71
+ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.iec958
+ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.iec958
+ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.iec958
+ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.hdmi
+ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.hdmi
+ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.modem
+ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.modem
+ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.phoneline
+ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.phoneline
+xcb_connection_has_error() returned true
+xcb_connection_has_error() returned true
+xcb_connection_has_error() returned true
+xcb_connection_has_error() returned true
+Cannot connect to server socket err = No such file or directory
+Cannot connect to server request channel
+jack server is not running or cannot be started
+PortAudio version number = 1899
+PortAudio version text = 'PortAudio V19-devel (built Feb 21 2014 06:46:01)'
+Number of devices = 7
+--------------------------------------- device #0
+Name                        = sunxi-CODEC: PCM (hw:0,0)
+Host API                    = ALSA
+Max inputs = 2, Max outputs = 2
+Default sample rate         = 44100.00
+--------------------------------------- device #1
+Name                        = sysdefault
+Host API                    = ALSA
+Max inputs = 128, Max outputs = 128
+Default sample rate         = 44100.00
+--------------------------------------- device #2
+Name                        = pulse
+Host API                    = ALSA
+Max inputs = 32, Max outputs = 32
+Default sample rate         = 44100.00
+--------------------------------------- device #3
+Name                        = mmap0
+Host API                    = ALSA
+Max inputs = 2, Max outputs = 2
+Default sample rate         = 44100.00
+--------------------------------------- device #4
+Name                        = dmix
+Host API                    = ALSA
+Max inputs = 0, Max outputs = 2
+Default sample rate         = 48000.00
+--------------------------------------- device #5
+[ Default Input, Default Output ]
+Name                        = default
+Host API                    = ALSA
+Max inputs = 32, Max outputs = 32
+Default sample rate         = 44100.00
+--------------------------------------- device #6
+[ Default OSS Input, Default OSS Output ]
+Name                        = /dev/dsp
+Host API                    = OSS
+Max inputs = 16, Max outputs = 16
+Default sample rate         = 44100.00
+----------------------------------------------
+</code>
+  * so in case we want to use default device, lets tak its #5
+<code>
+dsd -i pa:5 -o pa:5
+</code>
+  * manipulate soudn outputs/inputs by
+<code>
+  pavucontrol
+</code>
+  * pipe I/O to fucntional device
+<code>
+padsp dssocat UDP-RECV:7355 - | padsp dsd -i /dev/dsp -o /dev/dsp
+</code>
+==== RTL-SDR ====
+   * http://kmkeen.com/rtl-demod-guide/
+   * http://www.kerrywong.com/2014/11/16/testing-an-rtl-sdr-spectrum-analyzer/
+   * http://www.rs-online.com/designspark/electronics/eng/blog/taking-the-raspberry-pi-2-for-a-test-drive-with-gnu-radio-2
+   * https://www.youtube.com/watch?v=qPWD4imXXsc - RTL-SDR: GQRX and DSD decoding in GNU/Linux command line.
+   * http://marcinkowski.ca/blog/2014/02/19/decoding-dmr-radio-using-rtlsdr-gqrx-and-pulseaudio --- howto pro predchozi radek
+   * http://notes.secretsauce.net/notes/2014/07/25_decoding-p25-with-rtl-sdr-on-debian.html
+<code>
+   aptitude install rtl-sdr rtl-sdr gr-osmosdr gqrx-sdr cmake libsndfile1-dev pavucontrol libitpp-dev
+XXXX:   aptitude install python3-pip
+</code>
+=== RADIO-TEORIE ===
+   * Evidence stanic bezdrátového místního informačního systému (BMIS) | Český telekomunikační úřad:
+http://www.ctu.cz/vyhledavaci-databaze/evidence-stanic-bezdratoveho-mistniho-informacniho-systemu-bmis/prehled
+   * ANTENNA MAGUS - List of Antennas | Explore | Features | The leading Antenna Design Software tool. | Antenna Design. Simplified:
+http://www.antennamagus.com/antennas.php?page=antennas
+=== NOTES ===
+<code>
+:16:03 < Over23> bry vecer, prosba prosbouci
+:16:13 < Over23> je tu nekdo kdo si hraje s dsd?
+:16:31 < Over23> konkretne tenhle problem:
+:16:34 < Over23> over@picka ~ $ socat UDP-RECV:7355 - | dsd -i /dev/stdout
+:16:34 < Over23> Digital Speech Decoder 1.7.0-dev (build:v1.6.0-86-g7ee04e5)
+:16:34 < Over23> mbelib version 1.3.0
+:16:34 < Over23> Error, couldn't open /dev/audio
+:16:36 < Over23> 2016/03/19 23:15:52 socat[8975] E write(1, 0x7d5438, 256): Broken pipe
+:17:56 < Jenda`> Over23: vždy jsem dekodoval jen wav, musí být 1ch 48kHz S16_LE
+:18:49 < Over23> muzu videt nejaky priklad?
+:20:07 < Over23> respektive cesta tedy ma byt bud z gqrx > wav > dsd chalu li dobre [resp sdr_fm > file]
+:20:18 < Over23> respektive cesta tedy ma byt bud z gqrx > wav > dsd chalu li dobre [resp sdr_fm > file > dsd]
+:20:50 < Jenda`> ffmpeg -i foo.wav -ac 1 -ar 48000 -y ble.wav; dsd -i ble.wav -w out.wav
+:21:03 < Jenda`> foo.wav je z gqrx
+:21:18 < Jenda`> nahrané jako nbfm s šířkou alespoň 13 kHz</code>