FUNcube dongle and satellite update

It’s been awhile since we’ve covered the FUNcube dongle, but their updated extended frequency coverage hardware and new software dashboard merits a new look. The FUNcube Dongle is an SDR device covering the 150kHz to 1.9GHz frequency range (with a gap in coverage between 240 MHz and 420 MHz). It retails online for around GBP125, […]

Improved digital voice P25 decoding with DSDPlus

We previously posted about the DSD digital decoding software and it’s usefulness with the RTL-SDR dongle and other signal sources. Now there’s a newly released version known as DSDPlus which promises to deliver improved decoding and clearer audio of unencrypted APCO Project 25 (P25) radio signals. This program is designed to be used with your […]

Ham Radio Linux LiveDVD Ver. 14 supports RTL-SDR, HackRF and more

Andy, amateur radio operator KB1OIQ, has released the Version 14 of his Ham Radio Linux LiveDVD containing programs focused on amateur radio and SDR operations. This is a remastered version of Ubuntu Linux. As of version 13, there are 32-bit and 64-bit versions available, as well as an image for the PengPod 1000. This version […]

Nooelec RTL-SDR giveaway at AmateurRadio.com

AmateurRadio.com has teamed up with Nooelec.com to give away RTL-SDR packages to 10 hams. To be eligible to enter the competition, you must be a registered amateur radio operator, and you must comment on the competition page. The prizes are: Two (2) Complete HF sets including NESDR Mini receiver and accessories; Two (2) Complete Touch […]

GRCon13 video: Some More of Your RFz Are Belong to Me

At the recent GRCon2013, SDR guru Balint Seeber delivered this presentation on using GNU Radio to create new blocks and prototype flowgraphs relating to FasTrak RFID (used in traffic toll collection system), MUltiple SIgnal Classification (MUSIC) Direction Finding, RADAR Detection and Multi-channel Decodings.

Rtl_fm Guide: The long lost documentation

Kyle Keen has written up documentation on his Rtl_fm utility, which enhances RTL-SDR operation on older PCs. Rtl_fm is a little utility I wrote for the RTL-SDR project. The program was made to fill a gap in software defined radio: all the computers weaker than a Pentium 4. Basically, an Atom processor processor does not […]

Decoding radio-controlled bus stop displays

Oona Räisänen (a/k/a Windytan) is a self-taught signals and electronics hacker from Helsinki, Finland, who is fascinated by mysteries, codes and ciphers, and vintage tech. She’s previously written regarding the use of digital transmissions carried on FM broadcast subcarriers as a means of supplying data to digital information signs used at bus stops.

RTL-SDR + SDR Radio + Funcube Sat

Amateur radio operator N4JTC has written a blog post about his experiences using the RTL-SDR dongle to receive the Funcube Satellite. With the recent record number of cubesat launches this month most Amateur Radio enthusiasts been busy, myself included. There hasn’t been a better time to get into receiving these satellites. With the inexpensive hardware, […]

Decoding FLEX pagers using RTL-SDR and Linux

Superkuh2 demonstrates how to decode FLEX pager radio traffic. He uses gr-pager and zarya’s implementation of it on the Linux platform with the RTL-SDR dongle. This script runs at a 250 KS/s sample rate and decodes one 12.5 KHz channel only. Internally it uses gnuradio’s optfir to generate low pass taps stopping at 12.5 KHz […]

R-Pi and RTL-SDR = AFSK transmission between two Linux boxes

This video depicts the successful transmission of AFSK data via a radio link between two Linux machines using a R-Pi and an RTL-SDR dongle. The crew at Kprod posted this cool RTL-SDR project on their blog. They use minimodem to do the encoding in a FLAC or in a WAV format, then use the R-Pi […]

EFERGY E2 Classic FSK decoding using RTL-SDR and R-Pi

Nathaniel Elijah has posted the a complete working prototype of an EFERGY E2 CLASSIC Transmission decoder using a Raspberry Pi and RTL-SDR USB Dongle. The EFERGY E2 Classic is an electrical usage monitor which displays information received from associated wireless energy sensors. Nathaniel writes, “It is now possible to capture those 10s to 20s power […]

Update: HackRF based SmartNet radio monitor

We previously posted about the GNURadio based scanner for SmartNet II digital radio systems. Now Luke Berndt has updated his project info and has posted samples of the decoded system audio online. It has taken a lot of futzing, but I have my HackRF recording the Washington DC’s Fire Dept radio system and making it […]

Video: Reversing Tire Pressure Monitors with SDR

In this presentation from the recent Toorcon 15 in San Diego, CA, Jared Boone, co-developer of the HackRF SDR detailed his efforts in reversing tire pressure monitors found on most vehicles. Tire Pressure Monitoring Systems (TPMS) are present on all US automobiles sold as of 2008. This talk, given at ToorCon 15 in San Diego, […]

Intro to Software Defined Radio (SDR) using cheap TV tuner dongles

If you see posts relating to USB dongle SDR’s and wonder what everyone’s talking about, this video is for you. In this presentation from last weekend’s Hack3rCon 4 conference in Charleston, WV, Justin Rogosky covers the basics relating to using the familiar RTL-SDR TV tuner dongles to monitor obscure portions of the radio spectrum.

Receiving, decoding and decrypting GSM with RTL-SDR

Domi007 has been experimenting with using the RTL-SDR dongle to receive and analyze GSM signals for research and academic purposes. He has posted a four parttutorial explaining his use of GNU Radio companion, Wireshark and other open source software to receive and analyze and decode GSM packets. The above link is for part one of […]

Detecting the Perseids meteor shower using RTL-SDR

Amateur radio operation EB3FRN demonstrates how he used an RTL-SDR dongle tuned to a distant VHF transmitter as a passive radar receiver to view the echoes produced by the meteor’s ionization. The signal he received was from the Graves radar system on 143.050 MHz, using a VHF ground plane connected to the dongle. He displayed […]

GNU Radio LiveDVD

A new release of the GNU Radio LiveDVD has been announced. Release 2013-0926 is based on the Ubuntu 12.04.3 LTS 64-bit operating system and is a bootable SDR environment suitable for demonstration and experimentation, contained on a read-only medium. This release now includes GNU Radio 3.7.2, gqrx v2.2.0-25, gr-air-modes, gr-iqbal, gr-osmosdr v0.1.0-11, hackrf v2013.07.1-16, osmo-sdr […]

iSEC Open Security video: Hacking the Wireless World

In this presentation from the iSEC Open Security Forum, September 12, 2013 in Palo Alto, CA, Balint Seeber, Applications Engineer and SDR Evangelist / Ettus Research, provides an introduction on how to analyze and hack RF communications systems using open source software and cheap radio hardware. He describes, “The focus will be on how to […]

Decoding D-STAR headers with the RTL-SDR

D-STAR or Digital Smart Technologies for Amateur Radio is a digital voice and data protocol used in amateur radio. Here’s a link which shows how the RTL-SDR can decode D-STAR text messages and headers (link is in Italian but Google translate can help, and the pictures show more than enough information). By using SDRSharp and […]

GNURadio based scanner for SmartNet II digital radio systems

Luke Berndt posted on the HackRF-dev forum: “I built a Scanner app so I could use my HackRF to listen to my local fire department. It should work for any Moto SmartNet trunking systems that uses P25 CAI for the voice channels. It is based off the gr-smartnet code and uses DSD to decode the […]