Make a working receiver and more on your computer

At our January 2024 monthly general meeting (held via Zoom) Kevin McQuiggin VE7ZD/Kn7Q presented on GNURadio,

What is this GNU?

Aside from the wild beasts of Africa, GNURadio is an open-source software toolkit that provides signal processing blocks to implement software-defined radios (SDRs) and other digital signal processing systems. It allows users to design, simulate, and deploy radio systems in software, enabling the development of a wide range of radio communication applications.

Here are some key aspects of GNU Radio:

Software-Defined Radio (SDR): GNU Radio is widely used in the field of SDR, where radio functionality is implemented in software rather than hardware. This provides flexibility, allowing users to modify and experiment with radio protocols, waveforms, and processing algorithms.

Signal Processing Blocks: GNU Radio provides a collection of signal processing blocks that users can connect to create custom signal flow graphs. These blocks perform functions like modulation, demodulation, filtering, frequency shifting, and more. Users can combine these blocks to create complex radio systems.

Wide Range of Applications: GNU Radio can be used to develop a variety of applications, including but not limited to:

• Communication Systems: Design and implement various communication protocols, such as AM, FM, SSB, LTE, Wi-Fi, etc.
• Radar Systems: Create radar signal processing chains for applications like target detection and tracking.
• Radio Astronomy: Process and analyze radio signals from space to study celestial objects.
• Wireless Sensor Networks: Implement communication protocols for distributed sensor networks.

Extensibility and Customization: Users can extend GNU Radio by creating their own signal processing blocks, allowing for customization and the integration of specialized functionality.

Graphical User Interface (GNU Radio Companion): GNU Radio comes with a graphical tool called GNU Radio Companion (GRC), which allows users to visually design signal processing flow graphs. GRC simplifies the creation of complex radio systems by providing a drag-and-drop interface for connecting signal processing blocks.

Active Community: GNU Radio has a vibrant and active user community that contributes to its development. This community-driven approach results in continuous improvement, updates, and the sharing of knowledge and resources.

GNU Radio is widely used in academia, research, and industry for prototyping, experimenting, and implementing various radio communication systems. It plays a crucial role in advancing the field of software-defined radio and empowering individuals and organizations to explore and innovate in the domain of wireless communications.

You can watch Kevin's presentation on YouTube;

Further Information:

A great way to start 2024!

The January - February 2024 Communicator, digital periodical of Surrey Amateur Radio Communications is now available for viewing or download.

Read in over 145 countries, we bring you 120 pages of Amateur Radio content from the Southwest corner of Canada and elsewhere. With less fluff and ads than other Amateur Radio publications, you will find Amateur Radio related articles, projects, profiles, news, tips and how-to's for all levels of the hobby.

You can view or download it as a .PDF file:  

Previous Communicator issues are at:

https://ve7sar.blogspot.com/search/label/The%20Communicator

and a full index is HERE.  

As always, thank you to our contributors, and your feedback is always welcome. 

The deadline for the next edition is February 15th.

If you have news or events from your club or photos, stories, projects or other items of interest from BC or elsewhere, please contact us at [email protected]

73,

John VE7TI
'The Communicator' Editor

Special Event Week: Dec 24-Dec 31, 2023

The 1st annual Olivia Digital Mode on HF Winter QSO Party, celebrating 20 years of Olivia.

The Olivia Digital DXers Club (we’re on ClubLog!) is holding the first annual Winter Olivia Digital Mode on HF QSO Party, starting at 00:00 UTC, 24 December 2023, and ending at 23:59 UTC, 31 December, 2023.

Minimum logging requirements:  Callsign worked, Band (or Frequency), Mode (I.e., Olivia 8/250, or other variations), Time QSO Started.  You can log more than that, but for the sake of the certificate, please send at least the minimum information per QSO, to NW7US (email is on QRZ profile).  Logs can be any common method, from an .ADI file, to a screen shot.

Full details are on our website:
https://OliviaDigitalMode.org

Olivia, a Multi-Frequency Shift Keying (MFSK) radioteletype digital mode, is an amateur radioteletype protocol designed to work in difficult (low signal-to-noise ratio plus multipath) propagation conditions on shortwave radio (i.e., high-frequency, or HF) bands. The typical Olivia signal is decoded when the amplitude of the noise is over ten times that of the digital signal!

Here is an introduction to the Olivia digital mode:

73 de NW7US