Mode-S demodulator written in C++ with CRC-based message framing. Stream1090 is a proof of concept implementation taking a different approach in order to identify mode-s messages in an SDR signal stream. Most implementations look for the so-called preamble (a sequence of pulses anounncing a message). Stream1090 skips this step and maintains directly a set of shift registers. Based on the CRC sum and other criteria, messages are being identified. The hope is that in high traffic situations, a higher overall message rate can be achieved compared to a preamble based approach.
ADSB-Ultrafeeder is an all-in-one ADSB container with readsb, tar1090, graphs1090, autogain, multi-feeder, and mlat-hub built in
A technical overview of intercepting and decoding satellite communications, detailing hardware, software, and techniques used for signal acquisition and decryption.
Easy‑to‑use turn‑key SD‑card image for popular single‑board computers (Raspberry Pi, Orange Pi, NanoPi, Odroid, etc.) that runs a complete ADS‑B/SDR feeder, supporting ADS‑B, ACARS, AIS and weather‑sonde data aggregation.
ADSB.im provides easy‑to‑install feeder images for tracking aircraft, ships, weather balloons and more using single‑board computers, SDR dongles and antennas. The project supports ADS‑B, AIS, Sonde and ACARS/VDL2/HFDL data, offering web UI setup, aggregator integration and open‑source tools.
A rigorous, tradecraft-focused course for beginner to intermediate radio enthusiasts, covering fundamental RF theory, advanced toolchains (SDRPP, SDR-Trunk, SDRangel, Universal Radio Hacker), signal hunting, decoding, and replay with an emphasis on operational competence and ethical practices.
An aircraft monitor based on Charlie Gerard's JavaScript Aircraft Radar System. It requires an RTL-SDR USB dongle and a WebUSB capable browser.
This article details a DIY hydrogen-line radio telescope built from affordable materials like foam insulation board, a paint thinner can, an SDR (AirSpy), and amplifiers. It explains how to detect the 1420.4-MHz signal emitted by hydrogen to image the galaxy and measure galactic rotation.
GUI application for using HackRF as a spectrum analyzer with features like optimized settings, easy retuning, peak/persistent display, and more.
PySpecSDR is a Python-based Software Defined Radio (SDR) spectrum analyzer with real-time visualization, demodulation, and signal analysis capabilities.
