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Archive for the ‘SDR’ Category

Measuring SDR noise figure

Friday, March 11th, 2016

David has written an article on measuring SDR noise figure: One number I wanted to know was the Noise Figure (NF) of the SDR. Mark has a bunch of SDRs so we got on a roll and checked out the NF on all of them. Now there are a lot of...

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Posted in how-to, SDR | No Comments »

Sniffing GSM traffic with HackRF and GNU Radio

Saturday, June 13th, 2015

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Posted in code, hacks, SDR, tutorials | No Comments »

Lantern: A New 925 MHz to 2175 MHz RTL2832U Based SDR for Satellite Reception

Friday, June 12th, 2015

Our friends at RTL-SDR.com are reporting on a new SDR based on the RTL2832u. "It is called the “Lantern” and is being developed for the Outernet project. The Outernet project aims to be a “library in the sky” satellite based service that will provide free access to daily downloads of...

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Posted in digital radio data, News, SDR | 3 Comments »

Android flight tracker uses ADSB data from RTL-SDR

Monday, May 4th, 2015

Nikos has developed an Android app which works with the RTL-SDR dongle to demodulate the ADSB signal from aircraft and overlays the position of the aircraft on a high resolution offline map. So the user can use the App without Internet connectivity, on board an aircraft in real time! Nikos'...

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Posted in Android, SDR, software | No Comments »

YOUSDR remote RTL-SDR software

Monday, April 6th, 2015

Sixuniform has released YOUSDR v0.1 Alpha, an RTL-SDR webinterface for Raspian / Raspberry Pi. This is a web-wrapper for the rtl-sdr softwares. Currently it commands rtl_fm, rtl_tcp and dump1090. The software can be downloaded from its GitHub. The instructions on the GitHub page show how to set it up on...

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Posted in open source, RF, SDR, software | No Comments »

Announcing the STREAM board

Monday, March 30th, 2015

The Myriad crew  has announced the new Stream board released through the MyriadRF initiative for doing SDR with the LMS6002D/LMS7002M from Lime Microsystems. It's a fully Open Source board with Kicad design files and a fully Open Source OpenRISC SoC for the FPGA: We are thrilled to announce that the STREAM...

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Posted in FPGA, open source, SDR | No Comments »

RTL SDR upconverter for shortwaves (0-30MHz)

Monday, March 30th, 2015

Tomasz Watorowski has published a new build, a NE612 RTL SDR Upconverter: This is a simple yet completely functional upconverter for the popular SDR donlge. The construction was build around cheap and easily obtainable mixer IC marked as NE 612, manufactured by Phillips Semi. Despite its limitations, it performs outstandingly well,...

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Posted in hacks, SDR | No Comments »

Teensy SDR transceiver description

Friday, March 20th, 2015

rheslip  has been working on a software defined radio using the Arduino compatible Teensy 3.1 and audio shield from PJRC. Source code is available on Github. Project info at Open Emitter blog.

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Posted in Arduino, SDR | 1 Comment »

Chrome RTL-SDR receiver app updated

Sunday, January 11th, 2015

When it comes to the RTL-SDR dongle, there's an app for that! (At least a Chrome app.) The Chrome app store has the updated RTL-SDR Radio Receiver app available for download. It's free and open source and is written 100% in Javascript. "Receive and listen to FM and AM radio...

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Posted in code, open source, SDR, software | 6 Comments »

Using the RTL-SDR dongle to detect meteors

Thursday, January 1st, 2015

According to AMSAT-UK, "a new paper has been released by Dr David Morgan 2W0CXV on using the RTL2841 DVB TV Dongle as a SDR processor with SpectrumLab. The paper 'Techniques for using the RTL Dongle for Detecting Meteors' covers the setting up and use of the dongle to receive meteor...

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Posted in SDR, site, techniques | No Comments »

Reverse engineering a Verisure wireless alarm

Tuesday, December 9th, 2014

Here's an informative two-part series of posts over at FunOverIP detailing how to reverse engineer a Verisure wireless alarm. Part 1 details the beginning steps such as finding the modules radio frequency and modulation type, analyzing the chipset datasheet and using GNU Radio.

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Posted in reversed, RF, SDR, security, sensors, wireless | 2 Comments »

Viewing a VHS tape using RTL-SDR and TV Sharp software

Tuesday, November 18th, 2014

Here's a different and unconventional way to view a VHS tape (as if VHS tapes aren't considered unusual enough today). DogsRNiceMineCraft posted this video on YouTube showing video received using an RTL-SDR dongle. I got a VCR today and wanted to see if I could receive the signal from the...

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Posted in hacks, RF, SDR, software | 4 Comments »

Video: AMBE exposed

Monday, October 13th, 2014

AMBE is a voice compression algorithm employed in vocoder chips used by DVSI Inc., and is commonly used in Icom's D-Star, Yaesu's Fusion, APCO-25, DMR, Opensky and other digital formats on the amateur, commercial and public safety frequencies. In this talk from last September's TAPR/DCC conference in Austin, TX, Bruce...

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Posted in SDR, Videos | No Comments »

Video: FlexRadio open API

Sunday, October 12th, 2014

During the TAPR/ARRL Digital Communications Conference in Austin last September, Stephen Hicks N5AC gave this presentation on interfacing with FlexRadio using their open API. Part II of this presentation was given by Graham Haddock KE9H, and discussed the FlexRadio wavefrom API. It is available from HamRadioNow. FlexRadio produces a series...

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Posted in code, RF, SDR, Videos | 1 Comment »

Cheap entropy using RTL-SDR dongle

Sunday, August 31st, 2014

We've seen the RTL-SDR dongle used for a number of interesting projects, but here's an unusual one not directly related to signal monitoring. Noel Bourke was considering the topic of entropy and randomness as it relates to encryption and came up with a unique use for the RTL-SDR. When RTL-SDRs...

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Posted in code, encryption, SDR | 1 Comment »

Tutorial: GNU Radio with the HackRF SDR

Friday, August 22nd, 2014

Michael Ossmann, one of the developers of the amazing and affordable HackRF SDR transceiver, is releasing a tutorial series on using GNU Radio. "This ongoing video series will be a complete course in Software Defined Radio (SDR). In this course, you'll build flexible SDR applications using GNU Radio through exercises...

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Posted in open source, RF, SDR, tutorials | 3 Comments »

Tutorials: GNU Radio for beginners

Monday, July 14th, 2014

GNURadio.org has been revamping their website, updating information on the latest release. As part of this process Marcus has posted a new seven part tutorial series on GNU Radio. "Our task is to build a beginner-level tutorial, which will then live on the static part of the web site. Someone...

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Posted in open source, SDR, software, tutorials | No Comments »

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

Saturday, July 5th, 2014

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 the signal, which is then analyzed using Python based tools...

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Posted in hacks, RF, SDR, wireless | No Comments »

Analysing 433 Mhz transmitters with RTL-SDR

Wednesday, June 25th, 2014

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 found in a lot of appliances including alarm sensors. This...

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Posted in code, digital radio data, Linux, open source, SDR | No Comments »

OHM2013: Hacking the radio spectrum with GNURadio

Wednesday, June 18th, 2014

At the OHM2013 conference held last summer outside Amsterdam, J. M. Friedt discussed his use of GNURadio as a signal processing prototyping tool. He writes, "We demonstrate the use of this software environment for implementing new digial communication mode decoding algorithms, qualifying low frequency circuits by using the audio card...

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Posted in RF, SDR, Videos | 2 Comments »

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Recent Comments

  • DP.: fixed, thanks
  • Bovine: Title of article has the wrong number for ESP8266 typed.
  • burkm m: It drifting even further using that standard XO...
  • langwadt: a HC14 is a bad choice for an xtal oscillator, the unbuffered non-Schmitt trigger HCU04 is much better for that application
  • Bill F: I'm ready for one!