Mare shared a step by step guide to setting up the multiband WEB SDR with remote receivers: I recently built homelab server based on “proper” server infrastructure with plenty of RAM and lots of processing cores. I decided to setup OpenWebRx in one linux virtual machine with raspberry pi only as remote receivers serving single […]
Tag Archives: SDR
SDR radio breathes life into a 75 year old Marconi CR100
Jon Hudson over at DesignSpark writes: This is a belated post of a fun project we did for RS Components. With the upcoming 80th anniversary of the founding of ‘RadioSpares’ – the original name for UK-based RS-Components, and the creation of an “Engineers’ Playground” as a feature of the 2016 Electronica event in Munich, […]
Software Defined Radio IC Decap: R820/RTL2832U
Software Defined Radio teardown: R820/RTL2832U Decap Recently there has been much interest in two integrated circuit which were originally designed to receive FM radio and DVB-T TV (as used in Europe). Some enterprising people quickly realised that since they were based on software-defined techniques they could be quickly re purposed for all sorts of clever […]
Measuring SDR noise figure
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 people playing with SDRs, but […]
Announcing the STREAM board
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 board is the latest project […]
Teensy SDR project
rheslip made this Teensy SDR project, that is available at Github: I managed to get the Teensy SDR in an enclosure over the Christmas holidays – now its starting to look like a radio! The enclosure is a plastic Hammond. Front and rear panels are PCB material and I added a layer of PCB inside […]
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.
Decoding P25 with SDR#, DSD, and RTLSDR
This is another illustration of the amazing utility of the RTL-SDR and SDR# software. Here proct0r links the output from SDR# to a program known as DSD. DSD is an open source command line program originally coded in C by anonymous for Linux for the purpose of decoding digital protocols via a PC soundcard.
SDR#: C#-based SDR app
Here’s a new open source Windows SDR application. According to the developers, “SDR# (read SDR Sharp) is a simple, intuitive, small and fast PC-based DSP application for Software Defined Radio. It’s written in C# with both object design correctness and performance in mind. The main purpose is to offer a simple proof of concept application […]
DCC 2011: FUNCube project development
The FUNcube Dongle is a SDR receiver on a USB dongle which currently sells for $125 GPB. It uses the same E4000 tuner found in the $20 RTL-SDR dongle we’ve posted about previously. The developer is Howard Long, G6VLB, who chronicled the FUNCube’s development in the above video from the 2011 Digital Communications Conference hosted […]
Introducing RTL-SDR: a $20 SDR
If you don’t want to spend $1,200+ for a USRP SDR to use GNU Radio the crew at OsmoSDR want to help. In addition to their other amazing work, Osmocom team members (notably Steve Markgraf) have been hacking away on an alternative least-cost solution they call rtl-sdr. So what is rtl-sdr? It is a creative […]
2011 DCC – Practical Software Radio
This talk is from the 2011 Digital Communications Conference (DCC) held last September in Baltimore, MD. The speaker is Matt Ettus who heads up Ettus Research, manufacturers of the USRP family of SDRs. His talk is an in depth technical explanation of “Why Things Don’t Always Match the Textbooks” in SDR. Matt is affiliated with […]
NBW-SDR: NBitWonder software defined radio
NBitWonder writes: Over at NBitWonder, we have been working to develop a software-defined radio for a few months. Last weekend, the radio received its very first signals. There is a short writeup and demonstration video at our website. This is quite similar to Jeri Ellsworth’s design in that is uses a Tayloe detector and some […]
Ruxcon 2011: Hacking the wireless world with SDR
Software engineer and perpetural hacker Balint Seeber presented this talk at the Ruxcon 2011 conference held November 19-20, 2011 in Melbourne, AU. Balint presents those unfamiliar with SDR with the basics of the hardware and software you’ll need and highlights what’s out there in the lesser known areas of the RF spectrum. He explains some […]
Matchstiq SDR transceiver
Drone writes to inform us of a new SDR: Here is an interesting new handheld SDR transceiver called Matchstiq from Epiq solutions. 300MHz to 3.8GHz. I sure would like to know how they’re implementing the configurable suboctave RF filters. There is on-board CPU, DSP, and Xilinx Spartan FPGA. Noise figure at 8dB is nothing to […]
SDR Sunday – monitor web SDRs and decode digital data
Want to try out software defined radio (SDR) before you buy or build a rig? Or do you just want to see what all the ham radio chatters about? Then check out the online SDRs available for your listening pleasure at WebSDR. This unique website lists dozens of online radios which you can click on […]
RHINO
The University of Cape Town in South Africa is developing an open source SDR project known as RHINO, which stands for Reconfigurable Hardware Interface for computiNg and radiO. Reconfigurable Computing is an attractive computational technology, allowing an almost limitless set of possible solutions to any particular problem. It does this by providing an effective compromise […]
Video: DSP/SDR basics
Here’s Jeri Ellsworth’s latest video, explaining the basics of DSP and SDR for beginners, and how to build a digital direct conversion receiver (SDR) using sampling detectors and FPGA DSP processing. (If you want to skip the silly cat portion of the video, start at 1:25.) The links referred to in the video are below: […]
USRP 101: unlocking wireless PC locks (and freeing dolphins)
We’ve been interested in the Universal Software Radio Peripheral (USRP) SDR and the associated open source GNU Radio software for some time, but the $1500+ cost has kept the project on the back burner. Nevertheless, we always like a good story about RF hacking with the USRP. Corey and Max saw a wireless USB Proximity […]