Category Archives: SDR

Garage door signal hacking using RTL-SDR and TI Chronos watch

in hacks, RF, SDR, wireless by the machinegeek | 0 comments

Students Ido Livneh and Gil Freidlin from Tel Aviv University have been experimenting with garage door opener signals using the TI Chronos watch and RTL-SDR dongle. Their technique involves using the SDR along with HDSDR software to acquire and record … Read more

Analysing 433 Mhz transmitters with RTL-SDR

Yashin has posted this tutorial at ArcanumX demonstrating how to read and decode 433 MHz digital data transmissions. “I intend to demonstrate how the RTL-SDR can be used to sniff 433 Mhz transmitters. These are pretty cheap and can be … Read more

Video tutorial: OFDM packet transceivers with GNU radio

in RF, SDR, tutorials, Videos by the machinegeek | 0 comments

Orthogonal frequency-division multiplexing or OFDM is a method of encoding digital data on multiple carrier frequencies. At this presentation from them recent FOSDEM 2014 conference in Brussels, Martin Braun explained the use of GNU Radio software and an SDR transceiver … Read more

Academic paper: hacking with RF replay attacks

If you’re new to RF hacking you may have heard the term “replay attack” and wondered what it takes to implement one. In this academic presentation Practicing a Record-and-Replay System on USRP a group of researchers from the Shenzhen Key … Read more

Listening to D-STAR digital voice with DSD 1.7

in code, open source, RF, SDR by the machinegeek | 1 comment

Brazilian amateur radio operator PU2VLW has written a post (in Portugese) detailing how to use DSD version 1.7 to decode amateur radio D-STAR digital voice transmissions. (Google translate may be helpful.) DSD can be downloaded as source from GitHub. His … Read more

RTL_FM_Python: An API and web interface for controlling RTL_FM

in open source, RF, SDR, software by the machinegeek | 0 comments

Here’s an interesting piece of open source code known as RTL_FM_Python for controlling the RTL-SDR dongle. “This is a Python library built upon the RTL-SDR project and allows you to use the RTL-SDR dongle to tune in arbitrary stations either … Read more

30C3 video: Monitoring the Spectrum – Building Your Own Distributed RF Scanner Array

in hacks, RF, SDR, Videos by the machinegeek | 0 comments

At the recent 30C3 conference in Hamburg, Germany, Andrew Reiter outlined his efforts in using inexpensive RTL-SDR dongles to build a distributed RF scanner array for monitoring and spectrum mapping. Software-Defined Radio (SDR) has increased in popularity in recent years … Read more