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

Notes on the Red Pitaya Open Source Instrument

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.

WSPR daemon for RTL receivers

JT65/JT9/JT4/WSPR/FSQ Encoder Library for Arduino

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.

FT8/FT4/WSPR Skimmer base on WSJT/KiwiSDR

Worldwide Network of WSPR Beacons

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

WSPR statistical analysis

UDARP - Universal Digital Radio Protocol

Multimode MEPT based on OpenBeacon

Si5351 based WSPR beacon

Band hopping WSPR beacon for Arduino and Si5351

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

Low Frequency and Weak Signal Underwater Communications in GNU Radio.

A QRP WSPR transmitter leveraging a Raspberry Pi

RedPitaya application: Software Defined Radio (SDR) for an 8-channel WSPR receiver.

High Altitude Balloon tracker for Arduino and Si5351, using WSPR protocol and Morse code.

.NET Standard library for encoding/decoding messages using the WSPR protocol