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A free application that controls up to 4 Alinco, Elecraft, FlexRadio, Icom, JST, Kachina, Kenwood, TenTec, or Yaesu transceivers, switching between them manually or automatically based on frequency, and displaying frequency-dependent settings for devices like tuners and amplifiers; includes a bandspread, and supports transverters, frequency and mode tracking by an independent transceiver or receiver, SDR-based panadaptors, and SO2R switching with microHam or OTRSP-compliant devices.

On this page you can listen to and control a short-wave receiver located at the amateur radio club ETGD at the University of Twente. In contrast to other web-controlled receivers, this receiver can be tuned by multiple users simultaneously, thanks to the use of Software-Defined Radio. Provided by PI4THT

Setting up the Arduino DUE to run as an SDR software defined radio

Winrad is a free software program designed to implement a Software Defined Radio (SDR), meant to run under Windows XP, Windows 2000, or Windows 98SE. In a nutshell, it accepts a chunk of up to 96 kHz coming from a complex mixer in form of two signals, I and Q, fed to the PC sound card.

A software defined radio by Alberto I2PHD

FlexRadio Systems delivers the first truly open source Software Defined Radio transceiver for Amateur Radio use. Receive Only versions are also available for non Amateur Radio applications. Read the SDR Articles and the SDR-1000 Product Information.

APRSdroid - Android APRS reporting tool

SDR software for SoftRock40 freeware by Alex VE3NEA

iSDR is a software defined radio application compatible with the Apple iPhone, iPod touch and iPad. iSDR is designed for experimenters, shortwave listeners, and amateur radio enthusiasts who would like a truly portable software-defined radio receiver.

Useful hardware & software for SAT tracking ,logging, Software defined transceivers for SDR and more

The SoftRock-40 is a small, low-cost, good-performing "software defined radio" receiver that plugs into a computer USB port and delivers I-Q audio signals to the computer's sound card. It was designed by Tony Parks, KB9YIG and Bill Tracey, KD5TFD as an "SDR sampler project" for hams everywhere to easily try out software defined radio.

An updated and classified collection of SDR projects and realizations

The Open SDR Project

Turn your android mobile phone or tablet into an affordable and portable software defined radio scanner

SDR Software defined radio kits, genesis SDR kits

A DIY discone antenna project made to improve receiveing performance of an RTLSDR receiver.

You will find on these pages my experiences and results on antennas and local/non-local QRM/noise reduction. Using a broadband vertical active magnetic loop and a home made / designed broadband amplifier. Two vertical magnetic Alford loops are used in an array. Analog and Digital Signal Processing and a dual phase coherent Software Defined Radio (SDR) are used. By PA0SIM

Free Windows ADS-B decoder for RTL-SDR dongles included in SDR#. It allow to broadcast data locally or to radar software sever such as Planeplotter, Virtual Radar Server, adsbSCOPE.

Get started with SDR using a Raspberry Pi and inexpensive RTL-SDR tuner.

Modular Software Radio, at sourceforge

USB LSB AM Modem (Modulator/Demodulator) for SdR and DSB (direct conversion) transceivers by F6CTE

KGKSDR is my attempt at some SDR decoding software. I'm putting this software together purely as a learning exercise, to better understand the mathematics behind SDR in general.

Experimenting with the new way of building a radio receiver known as "software-defined radio". This page gives some information about this project.

WebSDR.org is a WebSDR network. List of all active WebSDR radios.

Sundance SDR, TI software defined radio solution

HDSDR is a free SDR (Software Defined Radio) application for Windows. Common usage is Radio listening, Ham Radio, SWL, Radio Astronomy, NDB-hunting and Spectrum analysis. HDSDR (former WinradHD) is an advanced version of Winrad, written by Alberto di Bene I2PHD

SDR-RADIO.com is a Windows console for SDR receivers and transceivers. Designed for the commercial, amateur radio and short-wave listener communities, the console provides a powerful interface for all SDR users. Many SDR owners have made their radios available over the internet. Just look at the Web Servers page for a list of the radios you can use. You do not need a licence to use this sodftware with RFSPACE, FUNcube Dongles, Soundcard (SoftRock) and low-end SDRs.

USB-Controlled Synthesizer for Softrock RXTX and Local Oscillator Applications

The HPSDR is an open source hardware and software project intended as a next generation Software Defined Radio for use by Radio Amateurs

The RTL-SDR software by Osmocom, allow DVB-T dongles based on the Realtek RTL2832U to be used as a cheap SDR.

Winrad is a software program designed to implement a so-called Software Defined Radio (SDR), meant to run under Windows XP, Windows 2000, or Windows 98SE

SDR Receiver a compact high performance HF software defined radio receiver designed to be used in fixed or portable stations. Version 2 of the receiver is now available. It now has an RF pre-amplifier using a power MOSFET and other revisions to improve it's performance both as a stand alone receiver and as an IF panadaptor with HF and VHF transceivers.

WSJT-X and MAP65, open-source amateur radio programs, facilitate weak-signal digital communication. WSJT-X covers VHF/UHF to HF, decoding subthreshold signals. MAP65 optimizes for VHF/UHF EME with JT65. Free and GNU GPL licensed, WSJT-X is on Windows, Linux, and OS X, while MAP65 is Windows-only, supporting SDR hardware.

If you want to use an RTL SDR USB dongle with Windows 10 and you experience problems, you may find this free utility very useful

This document serves as a comprehensive guide for amateur radio operators looking to enhance their Yaesu FT-2000 or FT-950 transceivers with pan-adapter capabilities. A pan-adapter is an invaluable tool that allows operators to visualize the frequency spectrum, making it easier to identify signals and improve operational strategies. The guide details the necessary hardware modifications, including the RF Space IF-2000 board and various SDR options, along with their costs and installation procedures. The document caters to operators of varying technical expertise, providing step-by-step instructions and troubleshooting tips. It emphasizes the importance of using a sound card and software like PowerSDR and HRD for optimal functionality. By implementing these modifications, users can monitor multiple frequencies simultaneously, leading to a more productive and enjoyable amateur radio experience. This resource is particularly beneficial for those looking to modernize their equipment and remain competitive in the ever-evolving world of amateur radio.

Working with SDR#, adjusting frequency correction and basic setup.

Home made discone antenna used with RTLSDR dongle

SDR# (read SDR Sharp) is a high performance Software Defined Radio application. SDR sharp is a fully featured SDR capable of handling samplerates from kHz level soundcards up to multi hundred MHz dedicated samplers, thanks to its multi-core architecture.

A new SDR-receiver from the italian SDR developers community. Low-cost, DDS-less Software Defined Radio full coverage receiver for all HF bands, used with powerful software on the PC for multi-mode operation

Ham Radio Android Apps to displays your current QTH locator on Google Maps using the GPS or WiFi / network location.

ARRL page on SDR technology

A multiband WebSDR receiver system, located in Bolton, England accessible via the RSGB web site

SDR Forum - organization dedicated to promoting the development, deployment and use of software defined radio technologies for advanced wireless systems.

Dealer for Icom America (LMR/Marine/Amateur accessories) and Expert Electronics (SunSDR MB1) US dealer.

SSB-electronic gmbh based in Germany produces coax cables and connectors, rf parts and components, SDR receivers and transceivers, transvertes, attenuators, coax relays, precision directional couplers.

Setting up a Raspberry Pi as a SDR Server with RTL-2832U USB dongle

Sigmira is a free Software Defined Radio (SDR) application program that runs on Windows and Linux. It operates with with an external conventional receiver, RFSpace SDR-IQ, RPSpace SDR-14, or SDR-RADIO.com networked receiver

An easy mod to make the 1st IF of the Icom IC-7600 accessible and connect to a cheap RTL SDR dongle by VE4NSA

A discone antenna plan and pictures with renderings designe mainly for RTLSDR usage

Getting started with RTLSDR on MacOSX