Type Ia SDR projects
(sampling by a soundcard of the audio output of a traditional TRX)
|Soundmodem||Packet radio, in particular|
|An adaptation of the DRM standard for ham channel bandwidths (2.5 kHz), using as bases the sources of the DREAM project.
Hamdream is not maintained any longer : its replacement is WinDRM. Works both on emission and reception.
R1x-x-xx Type SDR projects
(sampling by a mono soundcard of an IF around 12 kHz)
|Fraunhofer SDR||A Commercial DRM receiver|
|DREAM DRM||The free software DREAM (DRM receiver)|
|DRM Software||The not free software (DRM receiver)|
|IFDSP||R1L-N-IN||The IK2CZL realization. Downconversion of the standard 455 kHz IF of a traditionnal receiver around 13 kHz, ans sampling by a sound card. Windows. Source code not available.|
|JI3GAB||R1L-N-IN||The JI3GAB realization. Downconversion of the standard 455 kHz IF of a traditionnal receiver around 13 kHz, ans sampling by a sound card. Linux. Source code available. Works also on emission.|
|G8JCF||The G8JCF software. Windows. Source code not available.|
|FDM77||640 euros||An italian SDR, designed by ELAD and distributed in France by Intertechnologies. Receive only.|
|R1F-H-IP||This “black box” converts any frequency between 30 kHz and 30 MHz around a 10 kHz IF (bandwidth = 15 kHz). Remote control by parallel PC port (USB converter also available). Double conversion, DDS.
The DRD32 is an improved-performance version.
|SAQrx||R1N-H-IN||This software made by Johan SM6LKM is for VLF reception (0-22 kHz). Antenna is directly connected to soundcard input. Windows source code available.|
|Winradio WR-G30x||R1P-N-UU||The low-cost version of Winradio (digital channel selection not possible, sampling by a mono soundcard).
See WR-G31x for the professional version.
Q1x-x-xx Type SDR projects
(sampling by a stereo soundcard of an audio I/Q IF)
|SDR-1000 / SDR-5000||Q1A-H-IP||2800 US$||An SDR with available source code. Described in the QEX article series : “Software Defined Radios for the Masses”|
Gnurockr (nouveau lien)
|Q1L-H-IN||A “small” version of the SDR-1000 (Rx Only), powered by USB port, and working in the 40 meters band for the initial design. Several softwares work with this hardware.
With Gnurockr, VU3RDD wrote a Gnuradio module allowing to control the softrock.
KB9YIG’s site describes several SoftRock flavours.
JavaGUI is a small GUI under Linux for DttSP (the core of the softrock and SDR-1000).
|WSE||Hardware developped by Leif SM5BSZ, first described in the QEX articles “Linrad : New Possibilities for the Communications Expermienters”. These hardwares have 2 RF channels giving 2 I/Q pairs
|GW4DGU||Slides describing the design of a SDR used for high frequencies (GHz). I/Q frequency converison is done with on-the-shelf chipsets (example : LT5515, LT5516, LT5517, AD8347, AD8348).|
|Time Machine||135 US$ (kit)||A very original project : this board allows to record a spectral band with a traditionnal stereo recorder (MP3 walkman, laptop, audio tape, …), and to replay it later !!|
|DT1 DT2 DR1 DR2||R1L-H-INQ1L-H-IN||The YU1LM SDR realizations (Rx + Tx). Hardware with SDR-1000 like I/Q conversion, but more simple. Software with SDRADIO among others. PDF describe precisely the performance of this transceiver.|
|NORCAL NC2030||A CW transceiver with amazing performances (IP3, dynamique range, …), that can be used to make a SDR Fron-End. This project was made by Dan Tayloe N7VE, and uses of course a Tayloe I/Q mixer…|
|Firefly SDR||Q1L-H-IN||75 US$ (kit)||The new design from Dan Tayloe N7VE, a bit like the Softrock. Fixed local oscillator for 30m and 40m band receiving. Works also in transmit mode, using a traditional VXO (no SDR)|
|SDR-X||Designed by I0CG, this project allows to convert the HF spectrum (0-30 MHz + 6 meters band) around an I/Q I/F that cans be digitized by a sound card. The programmable oscillator is realized with an AD9951 DDS. Preselection filters are automatically activated with the requested frequency. Attenuators and low noise programmable amplificators are also present.|
|SDRZero||Q1L-H-IN||35 US$ (kit)||A softrock like SDR, realized by PY2WM and N1VTN/PU1JTE. Mainly in Portugues language, but some pages in English. A kit is available for sale.|
|KDG-SR100||Q1A-H-IP||700 euros||An SDR-1000 like realization, working both on receive and transmit, and using a DDS for LO|
|This university develops a SDR based on a GnuRadio core, and a specific RF front-end for the 900 MHz band.
Some advanced subjects are covered, like : communication protocol with the SDR, security and cognitive radio.
The PDF is particularly interesting.
|TinySDR||M1L-H-IN||A very simple SDR for HF bands, by LY1GP. Mixing is done with a home-made diode-based mixer, and there is no amplifier (sound card only). I/Q LO is generated with a VFO and 90° phase offset is obtained with a simple capacitor and resistor.|
|Elektor||Q1P-H-IU||100 euros||A RX SDR for HF bands, with USB frequency control. Uses a PLL VFO for frequency tuning (CY27EE16) and a FT232R USB chipset.|
|Genesis Radio||Q1L-H-IN||150 US$ (kit)||A transceiver SDR for the 40m band, that works with classical I/Q softwares (PowerSDR, …). Uses classic through hole components (no surface mount)|
|Q1P-H-IU||195 euros||A SDR for the HF band (RX only), that works with classical I/Q softwares (PowerSDR, winrad, …). Uses a Si570 DSPLL for frequency tuning. Delivered as a pre-assembled kit.|
|Soft66AD||Q1A-H-IU||115 US$ (assembled)
85 US$ (kit)
|A SDR for the HF band (RX only), that works with classical I/Q softwares (Rocky, SDRadio, winrad, …). Uses a AD9831 DDS, and a USB frequency control|
|Lazy Dog LD-1||Q1A-H-IU||218 US$||A SDR for the HF band (RX only), that works with classical I/Q softwares (Rocky, SDRadio, winrad, …). Uses a DDS, and a USB frequency control|
Q2x-x-xx Type SDR projects
(sampling by a dedicated stereo audio ADC of an I/Q IF)
|PA3FWM||Q4P-H-EE||This OM uses the same I/Q downconverter as the SDR-1000, but uses a dedicated stereo audio ADC (and not a sound card) : the PCM1804 at 192 kHz on 24 bits. Transfert toward PC is done through Ethernet. Rx only.
Since early 2006, PA3FWM tries with a faster ADC (AD7760 at 2,5 Msamp/s), and uses an FPGA to build Ethernet frames.
|WB6DHW SDTCV||Q2A-H-UU||This OM uses the same I/Q downconverter as the SDR-1000, but uses a dedicated stereo audio ADC (and not a sound card) at 192 kHz on 24 bits. Transfert toward PCand control is done through USB.
LO is realized with a 4 channels DDS AD9959, wich has the advantage to allow simultaneous Rx of several channels, with an eventual phase synchronization between them.
Rx / Tx up to 200 MHz without any other LO than the DDS.
||D2P-H-EE||Beautiful site ! Clear and informative !
I/Q analog mixing with an AD8337 for RX and AD8346 fot TX. Front-ends are planned for 13cm, 23cm and 4m bands.
Analog I/Q IF digitized by a Cirrus CS4272, audio stereo DAC/ADC 24 bits 192 kHz .
Ethernet communication. ARM7 CPU.
PC software based on SDR-1000 DSP core.
|RT2||Q2F-H-??||KC2MFS’s project. Dedicated stereo audio ADC (PCM4202 : 24 bits, 192 ksamp/s). DDS realized not with an ASIC but with a FPGA.|
||Q2A-H-UU||Interesting SDR project,. The only connection with PC is USB port.
Uses a PCM2904 audio ADC : this chipset has an integrated USB interface : very smart !
Uses a AD9851 DDS.
|OH2NLT Cheap DSP||Q2A-N-NL||A stand-alone SDR (no external PC or laptop needed), using a QSD and a dedicated stereo ADC/DAC (TLV320AIC23B). I/Q samples processing is done onboard with an dsPIC30F6014 chip. Very detailed information on the site with schematics, PCB drawings, and DSP code…
Very fine enclosure also.
Also works in TX.
|VK3GJZ Simple DSP Receiver||Q2L-N-NL||A stand-alone SDR (no external PC or laptop needed), using a QSD and an Alesis/wavefront DSP chipset for sampling and I/Q samples processing.|
R3x-x-xx Type SDR projects
(sampling of a “direct antenna output” RF signal by a “off-the-shelf” acquisition board)
|DOMENECH||R3N-H-IN||Sampling of the RF signal (directly out from the antenna) by a TV tuner board with BT878 chipset (Fsamp = 896 ksamp/s)|
|LORAN-C||R3N-H-IN||An SDR project for VLF reception of the localisation system Loran-C (90 to 110 kHz).
Uses an Adlink PCI acquisition board.
R2x-x-xx Type SDR projects
(sampling by a dedicated RF ADC of an analog IF)
|F1OAT||M2P-N-ES||F1OAT’s SDR. Based on DSP EZ-KIT ADSP 21061 (floating point), and DDS (AD7008)
|DSP-10||R2P-N-NS||ARRL’s SDR. Available source code (assembly code). Based on DSP EZ-KIT ADSP 2181 (16 bits fixed point, AD1847 ADC/DAC).|
|Winradio WR-G31x||R2P-H-UU||The professional version of Winradio (digital channel selection possible in the PC software, sampling by a dedicated ADC).
See WR-G30x for the low-cost version.
|OpenSDR or OpenSDR||The openSDR project. This is in fact the Gnuradio project.|
|Modular Software Radio||Modular Software Radio (Ecole Polytechnique Fédérale de Lausanne). Emission / reception of an UMTS signal (bandwidth 5 MHz @ 2.4-2.48 GHz). Sampled IF at 90 MHz|
|Wireless3g4free||A project from the EURECOM school. Emission / reception of an UMTS signal.|
|AMSAT SDR||The AMSAT SDR project. The page “design concept” contains interesting information about design of this (future) SDR.
R4x-A-xx Type SDR projects
(sampling by a dedicated RF ADC of a “direct antenna output” RF signal, and ASIC based DDC)
|Rfspace SDR-14||R4N-AH-UU||1100 US$||A commercial SDR (source code not available), based on ASIC and ADC.|
|Rfspace SDR-IQ||R4N-AH-UU||500 US$||The new RFSPACE RIG. Still based on an ASIC DDC (AD6620) and USB for samples transfert. 66 MHz 12-bits sampling with AD9245|
|ADAT HB9CBU||R4N-A-NL||ADT-200A is a stand-alone SDR (no external PC required), RX and TX. Receive part uses an AD6645 14 ADC and 4 channels AD6624A DDC. Transmit part uses AD9754 DAC and AD6623 DUC. I/Q samples are processed with a ADSP-21363 SHARC.|
R4x-F-xx Type SDR projects
(sampling by a dedicated RF ADC of a “direct antenna output” RF signal, and FPGA based DDC)
gnuradio chat list
A gnuradio user
GRC : A gnuradio GUI
|R4N-F-UU||700 US$||The Gnuradio project.|
|SSRP||R4N-H-UN||A simplified version of the USRP|
|PERSEUS||R4N-F-UU||A direct sampling HF receiver. Uses an LTC2206 14 bits 80 Msamples/s ADC, and an XC3S250E FPGA for downconversion. Control through USB. Announced output digital bandwidth : 800 KHz (with 1 M complex samples per second).|
|Quicksilver QS1R||R4N-FH-UU||850 US$||This project uses an ADC LTC2208 16 bits 130 Msamples/s, and a FPGA Altera Cyclone III EP3C25 for the DDC function. Rx from 15 kHz to 55 MHz.Control and I/Q samples transfert through USB, with a software called SDRMAX, based on the DttSP library.
Open-source firmware and software.
A TX version (QS1T) is under design.
Project by Phil Covington N8VB
|Portland State University
University of Notre Dame
Virginia Tech (OSSIE : open source JTRS / SCA framework)
|These students present SDR projects based on the USRP Gnuradio board.|
|JANUS/PHOENIX : Q2A-H-UU
MERCURY/OZY : R4N-F-H-UU
|This is an ambitious project : ADC LTC2208 at 130 Méch/s, and FPGA for the DDC. USB interface for communication
|W1QG||R4N-F-NN||A SDR based on a Lyrtech Signal Master board. The FPGA is programmed with the Xilinx system generator developement kit.|
|RTG003||Not an amateur, but professionnal realization. Expensive.|
Dxx-S-xx Type SDR projects
(sampling by a specialized IF chipset with both ADC and DDC functions)
|OH2NLT HF Receiver||D5N-S-NL||This project uses a TI AFREDI8201 specialized chipset with both ADC and DDC functions.
This is a stand-alone SDR (no external PC or laptop needed), RX only.
|WebSDR||An online SDR, very efficient and very fluid. The first realization of this type. Must absolutly be seen !!!|
Samples processing softwares
|Rocky||A small software using original methods for FFT computation (polyphase FFT), and filtering (time-frequency surface re-parameterization)
|Winrad||Same author as SDRADIO. Linrad was used as model for some parts of this software.|
|SDRADIO||A software (Windows) used to demodulate I/S samples coming from a sound card|
|DSPRX||DL6IAK software. Very simple|
|PowerSDR||The software used by SDR-1000
|Spectraview||The software used by SDR-14|
|M0KGK KGKSDR||A windows program. Source code not available|
|Erlink-sr||“A software defined radio that can be distributed at a fine granularity across multiple platforms”. Looks very original – G3UKB project.
Known before as “smalltalk SDR”.
|QUISK||Linux software by Jim N2ADR with source code provided. Works with the SDR-IQ, softrock, or it can use the PC sound card for other hardware.|
|SDRMAX||The open-source software (Linux + windows) used for the QuickSilver QS1R project (see above).|
|Linrad||Software from Leif SM5BSZ, that runs under Linux and Windows. Linrad is compatible with several hardwares : the author’s hardware (WSE) or third-party hardwares (softrock+soundcard, SDR-14, SDR-IQ, …)|
(RF Front Ends : or how to convert a signal down to an IF that can be sampled)
|Sat-Schneider – DRT-1||A programmable RF tuner with DDS. IF output @ 12 kHz. Perfect for type Ib SDRs..
|ELEKTORDescription||A programmable RF tuner (IF output @ 12 kHz), published in march 2004 in Elektor. Distributed by Modul-bus.
The second link (in German) describes the design more precisely.
|N2DS Schmarder||An original “old-fashioned” project for DRM signal reception. Direct conversion with a lamp oscillator !
|JOGIS||Two other Front-Ends for DRM reception (around 6 MHz). One with a tube, the other with a NE612 (in German).
|WSE (SM5BSZ + SM7UFW)||A collection of boards used to convert HF signals (1,8 to 14 MHz) or VHF signals (144 MHz) around an audio IF, that can be digitized by a sound card. Simultaneous conversion of 2 channels.|
Jan realized a 2 phase coherent receiver. One antenna is connected on each way, to form an array of 2 antennas.
Smart digital signal processing is then used to achieve noise and interference reduction, and directivity.
Detailed principles of this project have been published in a QEX article
|OH2GHR||A project based on AD9854 DDS. Mixing with an AD831 or a Tayloe detector.|
|GW4DGU||How to use off-the-shelf components (example : LT5515, LT5516, LT5517, AD8347, AD8348) to realize a direct I/Q conversion.|
|ARRL SDR||The ARRL page about SDR|
|TAPR SDR||The TAPR page about SDR|
|wiki sdr||A wiki about SDR|
Technical Références (DSP)
|DSPguide||A free online book
|DSPrelated.com||A collection of “posts” from the comp.dsp forum. Keyword research capability
|Complextoreal.com||Some interesting tutorials|
|DSPguru.com||Some interesting information|
First hand-held SDR ?
|An interesting SDR realization : a mobile GSM BTS.|
|SharedSpectrum||Cette société, financée par le Département de la Défense américain, conçoit des transceivers et des algorithmes permettant une utilisation rationnelle du spectre (radio cognitive)|
Multiple Acces Communications
|Ces sociétés commercialisent différentes cartes de traitement numérique (FPGA+DAC+ADC), pouvant servir de base matérielle pour des SDR|
|COMBLOCK||Radio module for quick prototyping. These block could be used in SDR projects.|