There are 4 repositories under shortwave topic.
KiwiSDR: BeagleBone web-accessible shortwave receiver and software-defined GPS (archived)
A nice SDR# plugin for Short Wave (and not only!) listening enthusiasts.
Si5351 and Arduino based superheterodyne receiver
Silicon Labs SI4844 (BROADCAST ANALOG TUNING DIGITAL DISPLAY AM/FM/SW RADIO RECEIVER) Library
The server to emulate old warm AM radio sound on Raspberry Pi
Python for ITU P.368 : Ground-wave propagation curves for frequencies between 10 kHz and 30 MHz
Auto Band Pass Filter controlled by Arduino
Si5351 based WSPR beacon
A Radio Logging application build with NodeJS and ExpressJS
A list of shortwave stations. This list is intended for a plugin for SDR++
Singled ended to differential (BALUN) amplifier for direct sampling with RTL-SDR dongle
AM / DSB shortwave transmitter
All-in-one tool for ham radio enthusiasts! Log QSOs, track satellites, manage repeaters, view real-time maps, charts, and get alerts—all in one feature-rich, beautifully designed app.
A clone of the ATS 20 from PU2CLR in Eurorack Format (3U height). The circuit contains jumpers to switch between standalone mode and Eurorack.
Głowica DSK do antenowych instalacji zbiorowych
Ionoreporter extracts and populates a database with parameters produced by an ionosonde, and pushes notification messages via Slack or Discord of e.g the optimal frequency range for NVIS radio communication (shortwave, HF/MF).
Copia TGI2 Bacharelado em Gegografia na FFLCH - USP
Just a repo to store all the files and steps I used for building my long wire antenna
Shortwave propagation predition w/ a neural network