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Notes on the Red Pitaya Open Source Instrument

Satellites and Balloons Wiki

A small hardware device for transmitting WSPR messages based on the SI5351 IC which uses GPS for transmission time synchronization and automatic QTH locator calculation.

A QRP WSPR transmitter leveraging a Raspberry Pi

A C# based class library and usage examples related to interacting with WSJT-X through the UDP interface in .NET & .NET Framework 4.8

UDARP - Universal Digital Radio Protocol

Interfaces with network or serial GPS devices, obtains location and time NMEA data, converts location data to maidenhead gridsquare format and injects data into WSJT-X/JS8-Call for autogrid functionality, and optionally synchronizes computer time with GPS time data. Available as python source or via release as Windows executable with GUI.

A C++-ified and modernized restructuring of JTEncode code that has been forked many times by various hams. This is built for now as part of an ESP-IDF (ESP32C3) test.

Minimal set of files required to build the WSPR decoder by Joe Taylor, K1JT and Steve Franke, K9AN.

Looking at WSPR signalen met Qt-WSPR

A multimode radio beacon for QRSS (FSK-CW, CW) and WSPR. Implemented using AD9850 and STM32duino. Repository hosting schematics, software and other implementation notes.

Graphical plots for amateur radio WSPR hf performance using propagation accuracy measurements

A WSPR beacon based on the Arduino Nano Every

Custom firmware for Vaisala RS41 and Graw DFM-17 radiosondes with support for amateur radio use. Ideal for tracking high-altitude balloons. Supported modes include APRS, Horus 4FSK mode, CATS, morse code (CW) and additional digital modes like WSPR and FT8 via Si5351.

adxi - USB-C digital modes transceiver

This crate provides an abstraction that allows you to do analysis on wspr's real time spot data.

Open source, multi-user SDR receiver software with a web interface

WSPR daemon for RTL receivers

Worldwide Network of WSPR Beacons