Software Defined Radio
founder:	brmlab collective
depends on:
interested:	sargon biiter niekt0 pasky nephirus ruza sysop kiki tlapka mrkva Jenda
software license:	-
hardware license:	-

~~META: status = active &relation firstimage = :project:sdr-flow.png ~~

The goal of this project is to get education and experience in the complex field of SDR technology and build applications for reception and transmission of various signals.

Předmětem řešení projektu je vytvoření nástrojů programového a elektronického vybavení pro určení typu šifrované komunikace, její následné dekódování a vyvinutí nových metod a nástrojů pro odhalování a vyšetřování případů kybernetické kriminality a ochrany informačních systémů před kybernetickými hrozbami.

–MVČR

Equipment:

• rtl-sdr sticks
• bladeRF with USB3
• Several computers to provide reasonable DSP power
• Aim to build distributed receiving cluster. Currently radios in brmlab, on brmlab rooftop and at Jenda's rooftop are available.
• Various antennas (HF, discone, 2m and 70cm Yagi, 2m and 70cm dipole)
• Satellite card and dish
• CB and PMR walkie-talkies
• advice related to Baofeng UV-5R radio

Ongoing activities:

• GnuRadio advice
• FM radio :)
• GSM
• Tetra
• Subway
• Tetrapol
• pagers, planes…
• NOAA weather satellites
• hunting for falling radio sondes
• Microphone eavesdropping
• FCL, a fast spectrum channelizer
• Kukuruku, an interactive SDR client
• Trains

Wanted topics:

• DSP on GPGPU and FPGA
• GNSS RX ant TX
• RFID, KEELOQ, Mifare, BT, wifi hacking
• BTS testing (tetra, DMR, APCO, D-star, matra, paging,… )
• HAM HF CW and digimodes TRX
• Passive and multistatic radars
• Coherent scanners
• TRBO cracker
• Ponnies

• Heavens above Brmlab
• http://www.n2yo.com
• Úvod NOAA

• Gnuradio - DSP/SDR toolkit
• gain - patch for gr-osmosdr to set gain on F0012 tuner
• gr-baz - contains alternatiobe Gnuradio sink for RTL2832U
• gqrx - SDR receiver GUI in QT
• airprobe - gnuradio based GSM decoding tool
• http://www.kmitocty.cz/zaklady/tabulka2011.html - listening frequencies
• http://old.avc-cvut.cz/avc.php?id=3622 - FEL ČVUT course on digital cellular network (czech)
• http://sdr.martinmarinov.info
• 24/192 Music Downloads ...and why they make no sense
• Understanding RF Radio Broadcast
• Digital Show and Tell
• http://www.icrobotics.co.uk/wiki/index.php/Turning_the_Raspberry_Pi_Into_an_FM_Transmitter
• https://www.rtl-sdr.com/signal-identification-guide/ RADIO SIGNAL IDENTIFICATION GUIDE
• GPS RX with rtl-sdr
• GPS/GLONASS RX with hardwired logic
• https://github.com/Nuand/bladeRF/wiki/Signals---I-Q-Theory-Training
• https://www.youtube.com/user/2011HPS/videos
• The basic idea of digital QAM.
• http://homepages.paradise.net.nz/peterfr2/QAMtiming/QAMtiming.htm
• J-QAM
• gr-dvbt
• http://www.sigidwiki.com/wiki/Signal_Identification_Guide
• Coherent RLT-SDRs
• Free implementation of RAMONA radar (yes, really)
• GPS network implementation
• Antenna bible (Czech)
• Učebnice teorie rádiové komunikace
• https://myriadrf.org/blog/digital-video-transmission-using-limesdr-gnu-radio/
• http://www.dsplog.com/2010/04/12/non-coherent-demodulation-of-pi4-dqpsk-tetra/
• Guided GNU Radio Tutorials
• HF utility/milcom monitoring and signals
• http://drm.sourceforge.net/wiki/index.php/Main_Page
• http://www.n5dux.com/ham/files/pdf/index.php
• See also: Digital Signal Processing#Zdroje

< Jenda`> https://www.youtube.com/watch?v=wv79DSqVi9w
< Muaddibdib> [wv79DSqVi9w] #195: RF Diplexer Basics: Tutorial, construction and tuning (11:59)
< Jenda`> https://www.youtube.com/watch?v=PuG8CCUbg58
< Muaddibdib> [PuG8CCUbg58] #204: Basics of Tunnel Diodes and their applications (19:08)
< Jenda`> https://www.youtube.com/watch?v=GvadQpkZ8l0
< Muaddibdib> [GvadQpkZ8l0] #260: RF Diode Mixer LO Drive Level & Conversion Loss | 1dB Compression | Distortion (8:47)
< Jenda`> https://www.youtube.com/watch?v=SS7z8WsXPMk
< Muaddibdib> [SS7z8WsXPMk] #60: Basics of Phase Locked Loop Circuits and Frequency Synthesis (22:12)
< Jenda`> https://www.youtube.com/watch?v=gw1TYWwfvGk
< Muaddibdib> [gw1TYWwfvGk] #274: Smith Chart Basics: Impedance and Admittance curves and conversion (11:30)
< Jenda`> https://www.youtube.com/watch?v=ImNRca5ecF0
< Muaddibdib> [ImNRca5ecF0] #275: Smith Chart: Z, VSWR, Reflection Coef and Transmission Line Effects (15:07)