Free Open Source Ham Radio Software

Fldigi is a modem program for most of the digital modes used by radio amateurs today: CW, PSK, MFSK, RTTY, Hell, DominoEX, Olivia, and Throb are all supported. It can help calibrate a sound card to a time signal and do frequency measurement tests. NOTICE: You must proceed to the Files section to locate the correct fldigi, flrig etal download for your particular operating system. Do not blithely use the big green Download button! Use the "Files" menu item or the "Browse All Files" link.

The WSJT project currently includes five programs designed for amateur radio communication using state of the art digital techniques. Typical applications include meteor scatter, EME ("moonbounce"), and QRP communication at HF. Summary Program Descriptions: WSJT: Modes JTMS, FSK441, ISCAT, JT6M, JT65, JT4, Echo, CW. Optimized for meteor scanner, ionospheric scatter, and EME at VHF/UHF/Microwaves. WSJT-X: Modes JT65, JT9, ISCAT, Echo, JT4, MSK144, QRA64, FT8, FT4, FST4, FST4W. Primarily for use at LF, MF, HF, VHF, UHF, and microwave. MAP65: For EME an VHF and higher frequencies. Implements a panoramic, polarization-matching receiver for JT65. WSPR: Probe potential propagation paths using low-power transmissions. WSPR-X: Experimental version of WSPR, including the slow mode WSPR-15. Source code is maintained here SourceForge. For installable end-user packages please go to the WSJT web site at the link below.

The Hamlib project's purpose is to develop flexible and portable shared libraries that offer a standardized API to control any radio oriented equipment through a computer interface.

WSJT-Z is a clone of WSJT-X software by Joe Taylor K1JT (https://sourceforge.net/projects/wsjt/). CHANGELOG is available on the Files page (https://sourceforge.net/projects/wsjt-z/files/). It started out as an automation project, but recent versions focus on providing additional functionality to an already great tool. You can find the latest installers here: https://sourceforge.net/projects/wsjt-z/files/Packages WSJT-Z is licensed under GNU GPL v3 - https://www.gnu.org/licenses/gpl-3.0.txt Most of the code was created and is copyrighted by the WSJT-X team led by Joe Taylor K1JT. Tool was previously known as WSJT-X SQ9FVE Full-Auto Mod Supports FT8, FT4, JT* and WSPR. NOTE: Please always attend to your transceiver when using WSJT-Z, unless automated operation is legal in your location.

Client software for users of the Automatic Packet Reporting System amateur radio network.

MSHV Amateur Radio Software. Developed by LZ2HV - Christo mail: lz2hv@abv.bg Supported working modes: MSK144 MSKMS JTMS FSK441 FSK315 ISCAT JT6M FT8/4 JT65 PI4 Q65 System Requirements: Microsoft Windows Xp, Windows 7,8,10 32 or 64 Bit, Linux Fedora (Red hat), Ubuntu (Debian) . Compiling: MinGw recommended GCC 7.3.0 thread model posix. QT5.6.3 library. IDE recommended QDevelop 0.29. All other libraries included inside the source. Acknowledgements to K1JT Joe Taylor and WSJT Development Group. The algorithms, source code, look-and-feel of WSJT-X and related programs, and protocol specifications for the modes FSK441, FT8, JT4, JT6M, JT9, JT65, JTMS, QRA64, ISCAT, MSK144, are Copyright © 2001-2017 by one or more of the following authors: Joseph Taylor, K1JT; Bill Somerville, G4WJS; Steven Franke, K9AN; Nico Palermo, IV3NWV; Greg Beam, KI7MT; Michael Black, W9MDB; Edson Pereira, PY2SDR; Philip Karn, KA9Q; and other members of the WSJT Development Group.

Gpredict is a real-time satellite tracking and orbit prediction application. Gpredict can track an unlimited number of satellites and display the data in tables and various graphical view.

Opensource frimware for platforms based on some SoC (Realtek RTL8186 - Wive-NG, Realtek RTL8671B/RTL8671BH/RTL8672 - Wive-NG-DSL, Ralink RT3050/RT3052 - Wive-NG-RTNL, MT7620/MT7621 - Wive-NG-MT) For detailed discussion of commercial use please mail to info@wi-cat.ru. For more details in russian please go to https://wi-cat.ru Any support for end user only in https://wi-cat.ru/forums/ forum page. Author page: http://wive-ng.sf.net Commercial support support@wi-cat.ru Supported device list: 1) Wive-NG-HQ - latest FW tree (only commercial access) 2) Wive-NG-MT (current) - https://wi-cat.ru/wive-ng/ustroystva-postavlyaemyie-s-os-wive-ng-mt-s-zavoda-2015-2017g/ 3) Wive-NG-RTNL (EOL) - http://wive-ng.sourceforge.net/?WR-NL_RT3050%282%29:Sovmestimye_ustroystva 4) Wive-NG-ADSL (EOL) - http://wive-ng.sourceforge.net/?W422G.v3_8671BH_%284%2F16%29

Gqrx is a software defined radio receiver powered by GNU Radio and the Qt GUI toolkit. It can process I/Q data from many types of input devices, including Funcube Dongle Pro/Pro+, rtl-sdr, HackRF, and Universal Software Radio Peripheral (USRP) devices.

Open source libraries and utilities to support using digital signatures for Amateur radio QSL information.

A cross platform Python frequency scanning GUI for USB TV dongles, using the OsmoSDR rtl-sdr library. In other words a cheap, simple Spectrum Analyser. More information can be found at: http://eartoearoak.com/software/rtlsdr-scanner An installer and standalone versions for Windows are located here: https://github.com/EarToEarOak/RTLSDR-Scanner/releases Sources are available on GitHub: https://github.com/EarToEarOak/RTLSDR-Scanner ** The up to date installer is no longer maintained on this site and can now be found at https://github.com/EarToEarOak/RTLSDR-Scanner/releases **

wsjt-x_improved is a clone of the excellent wsjt-x software by Joe Taylor K1JT, Steve Franke K9AN, Bill Somerville G4WJS and others (https://sourceforge.net/projects/wsjt/). Sometimes, however, even good things can be improved… Notes: wsjt-x_improved is experimental and is licensed under GNU GPL v3 (https://www.gnu.org/licenses/gpl-3.0.txt). I am not aware of any adverse effects. However, use it at your own risk! Download the various versions on the "Files" tab (https://sourceforge.net/projects/wsjt-x-improved/files/). wsjt-x_improved includes the following additional functions:

Version 21 - last version to support 32-bit Version 24e released: 03-oct-2021 (xfce4) 64-bit This is a remastered version of Ubuntu Linux based on Ubuntu 18.04.6. This version contains a lot of amateur radio software including Fldigi, NBEMS, Gpredict, earthtrack, xcwcp and qrq, XLog and cqrlog, flrig and grig, xnec2c, fl_moxgen, aa-analyzer, owx, VOACAP, glfer, Xastir, gqrx, gEDA, GNU Radio Companion, quisk, direwolf, linamc, FreeDV, wsjt-x, js8call, Micro-Fox 15 Config, and a TinyTrak3 configuration program. This software collection uses the Xfce desktop environment with menus customized for Amateur Radio use. It is designed to be lightweight, fast, and visually appealing. Recommended minimums: 2GHz CPU, 4GB memory, and 15 GB of disk space

The Ground Station Software Suite projects aims at providing free, useful software tools for ham radio operators. Currently, this projects hosts the Grig communication radio control. The source repository has been moved over to github.

JTSDK is a pre-configured collection of open source cross platform development frameworks, Gnu tools, libraries and custom written scripts designed to ease compiling WSJT applications and documentation from source code. WINDOWS APPLICATIONS ---------------------------------------------------------------------- * JTSDK-QT.......: WSJT-X, WSPR-X and MAP65 * JTSDK-PY........: WSJT and WSPR * JTSDK-DOC....: All WSJT Documentation * JTSDK-MSYS..: General Compiling LINUX APPLICATIONS ------------------------------------------------------------------ * JTSDK-Nix.......: WSJT, WSJT-X and WSPR

Skywave Linux is a 64 bit live system providing installed and configured software for accessing software defined radio servers locally and on the internet. With this operating system, a person may tune shortwave broadcasts, amateur radio, aeronautical, maritime, or other signals received at remote servers around the world. SDR software is configured for popular devices, such as the RTL-SDR dongles, Softrocks, Hermes, and other radios. Skywave Linux is a 64 bit system built over Ubuntu Linux, and may be installed on a bootable USB stick, SD card, DVD, or hard drive.

Echoes it's a radio spectral analysis software for RTL-SDR devices, designed for meteor scattering purposes. RTL-SDR are very cheap Software Defined Radios that uses DVB-T TV tuner dongles based on Realtek's RTL2832U chipset. Echoes doesn't demodulate neither decode any human-made signal. Its main goal is to analyze and record the total power of natural signals and generate screenshots and tabular data (CSV, GNUplot) output in presence of particular peaks in a selected narrow range of frequencies. Since there is no demodulation, there is no provision for audio listening, except for a notify sound when an event has been recorded.

A software gps simulator, providing TCP/IP, UDP, http and serial port connectivity in NMEA 0183, XML or user defined output format. Usable for testing all kinds of GPS applications. Can playback pre-recorded GPS files with NMEA output.

Qtmm is a simple AFSK1200 decoder that uses the computer's sound card for input. It can be used to decode packet radio, APRS and telemetry from amateur radio satellites.

A Smith charting program. You can enter either discrete components or transmission lines, see the results on screen and/or generate Postscript output. Component values can be changed numerically or using scrollbars.

Two programs: (1) MorseNews sends news from one or more RSS, Atom, or Twitter feeds as Morse code, and (2) MorseKeyer, an iambic/bug keyer with mouse & serial key/paddle. Both play CW or sounder audio and drive external sounder, loop, or ham rig. See http://morse-rss-news.sourceforge.net/

This utility 'rtl_sdr_panorama.exe' designed for panoramic imaging spectrum REALTIME any (reasonable) band by accumulating within 0.5 second spectral samples of limited bandwidth for simultaneous monitoring (speed via USB, usually within 2...3 MHz) c DVB- chip based RTL-2832/R820 (13...1864 MHz). Controlled parameters: 1. Dongle Phone system. 2. Initial scan, Hz. 3. Endpoint scan, Hz . 4. Spacing scanning ediitsy tens kHz/MHz. 5. Noise level, dB. 6. Magnitude clock frequency correction, ppm. Announcement on the resource http://www.rtl-sdr.com/new-rtl-sdr-panoramic-spectrum-analyzer/ New driver RTL-SDR http://lists.osmocom.org/pipermail/osmocom-sdr/2014-August/001353.html

Minos is a VHF contest logging program, together with a collection of programs to assist with station and site operation.