Posts Tagged ‘SARC Meeting’

Getting to know GNURadio

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;

Kevin has included several links at the end of his presentation

Further Information:

In September 2023 Our Communicator journal included an excellent article by Kevin titled: "The  “What’s It?” Of WSPR" that touched on many of the same principles as GNURadio. 

Another of Kevin's articles, titled: "Introduction to Digital Radio" was published in our January 2024 edition. Both of these will provide excellent supporting information for Kevin's GNURadio presentation.


SARCBUZZ News – October 2023


Monthly News and Announcements
Celebrating 50 years of service - 1975-2023

September 30, 2023

  • CQ WW DX Contest (SSB)
    October 28/29 Don’t miss out on your chance to compete in the largest Amateur Radio contest in the world. Over 35,000 participants take to the airwaves on the last weekend of October with the goal of  making as many contacts with as many DXCC entities and CQ Zones as possible. Both seasoned SARC DXers and GOTA newbies are invited to participate as a VE7SAR team. Coaching will be available to those who request it. Whether we operate two radios as Multi-Two (Low Power) or one radio as Multi-One (High Power) will depend on the number of operators signed up. Both Larry ([email protected]) and John ([email protected]) will collect names of those who wish to participate, and prepare a schedule. The team already has the September CQ WW RTTY contest under its belt and is looking forward to this next challenge.
  • Soldering Workshop
    October 21 8:30 am - Noon. FULL This workshop is for those new to soldering or wishing to refresh their skills. As presented by Dino (VE7XDT) and John (VE7TI) the workshop includes an introduction to soldering, types of soldering irons and stations, and  the construction of an xmas tree circuit board (agenda attached). This workshop is FULL but if you wish to be put on a waiting list or have interest in the next workshop you may contact John VE7TI or Larry VE7LXB .
  • Delta ARS Comfest

Sunday October 15 10am - 1pm The long tradition of the ComFest Amateur Radio Swap Meet continues. It is a great venue to meet fellow hams, buy and sell gear and or simply discover what the world of amateur radio has to offer. 1720 56th Street Tsawwassen. General admission $5. Major door prizes.

  • SARC Monthly Meeting
    Wednesday October 11th 7pm - 9pm. Location: Surrey Fire Hall Training Centre. The guest speaker for the next meeting is Halden Field VE7UTS. Halden is a member of the North Shore ARC and a past contributor to their newsletter and to The Communicator. Halden has presented at several west coast Ham Fests including at Seaside Oregon. He will be speaking on some of his favourite amateur radio construction projects.
  • Saturday Morning Breakfast and OTC
    SARC Meets informally for breakfast at Denny’s Restaurant 6850 King George Boulevard in Surrey, between 7:30 and 9:00am each Saturday morning. We’d love for you to join us. Following breakfast, the OTC will be open from 9:30 until noon. You are invited to come down to the OTC with your equipment and any ham-related issues and our Elmers will try to assist you. You can also reach Elmers by email at [email protected].

Thank you for being a SARCBuzz reader.

[email protected]

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