lessandro Volta revolutionised electrical science with the invention of the voltaic pile, the world’s first continuous electric current source. His meticulous research laid the foundation for modern technologies, from batteries to wireless communication, inspiring generations of innovators. Explore Volta’s legacy and its profound impact on science, technology, and amateur radio.
Articles by James Currie-Cathey
Hollywood and the Evolution of Amateur Radio Data Modes: A Surprising Influence
When you think about amateur radio, it’s natural to picture dedicated enthusiasts, antennas dotting the skyline, and long hours spent making contacts across the globe. However, it might be surprising to learn that Hollywood has played an unlikely but crucial role in the evolution of modern amateur radio data modes. The glamour of cinema and the technical world…
Richard Constantine (G3UGF) on Hamvention 2018
Richard Constantine (G3UGF) gave a fascinating talk on his visit to Hamvention 2018, the world’s largest amateur radio gathering. Stepping in at short notice, he shared insights into the event’s vast flea market, exhibitions, and innovations. Watch the full presentation to experience Hamvention through Richard’s eyes!
Michael Faraday – The Field Theorist
Michael Faraday’s discovery of electromagnetic induction revolutionized science, laying the foundation for electrical power generation and wireless communication. His field theory influenced Maxwell’s equations, leading to radio and telecommunications. Despite no formal education, his perseverance shaped modern technology, from generators to mobile networks, proving his legacy remains vital in today’s digital and wireless era.
HADARS Buildathon 2025: The Little Roo Project
At HADARS, we love a good hands-on challenge, and this year’s HADARS Buildathon 2025 is now underway!
Our club “Buildathon” project will have members assembling the Kanga Kits Little Roo – a simple yet effective 40m direct-conversion receiver that’s perfect for both newcomers and seasoned builders. To kick off the build, Max, G4SDX, delivered a presentation covering the circuit’s design, functionality, and what makes this kit a great entry into homebrew radio construction. He explained the principles behind the receiver, including how it demodulates signals and how the local oscillator plays a key role in its operation.
Alessandro Volta – The Electric Pioneer
Alessandro Volta revolutionised electrical science with the invention of the voltaic pile, the world’s first continuous electric current source. His meticulous research laid the foundation for modern technologies, from batteries to wireless communication, inspiring generations of innovators. Explore Volta’s legacy and its profound impact on science, technology, and amateur radio.
From Sparks to Signals: The Wireless Innovators
Wireless communication, from early sparks to satellite signals, has revolutionised our world. From Sparks to Signals: The Wireless Innovators celebrates the visionaries behind these advancements, exploring foundational discoveries, groundbreaking inventions, and transformative systems. Join us to uncover the stories of scientists, engineers, and dreamers who redefined how we connect and communicate across the globe.
QRZ Logo
QRZ Issue 22 – March 2025 Now Available!
QRZ Issue 22 – March 2025 Now Available! Plus, Explore the Full HADARS QRZ Archive The latest edition of QRZ, the monthly newsletter of HADARS, is now available for download! Issue 22 – March 2025 brings significant updates, club event details, and technical content, making it an essential read for all members and radio enthusiasts. Key Highlights from…
The Meaning of ’73’: A Historical Look into a Classic Radio Sign-Off
In the world of amateur radio, there are few sign-offs as widely known and cherished as “73”. But what does it really mean, and where did it come from? In this article, we’ll take a deep dive into the origins of “73,” its historical context, and its journey into amateur radio culture. We’ll also give credit…
The NanoVNA Revisited
The NanoVNA is a compact, cost-effective Vector Network Analyser (VNA) that has become an essential tool for amateur radio enthusiasts. In The NanoVNA Revisited, Hardy (G4HWB) provided a practical guide to using this versatile device for antenna tuning, filter design, and transmission line analysis.
Soldering School!
Our latest HADARS Club Night featured Soldering School, a hands-on session led by Max, G4SDX. Using the presentation as a guide, members explored the fundamentals of soldering, from selecting the right iron to mastering proper technique. Whether trying their hand at soldering for the first time or refining their skills, attendees had the chance to put theory into practice with expert guidance.
It was a fantastic evening of learning, sharing tips, and developing practical skills that are invaluable in amateur radio and electronics projects.
Amateur Radio in Times of War: The Unsung Heroes of Wireless Communication
Throughout history, amateur radio has played an essential and often underestimated role in wartime, providing crucial communication links during military operations, supporting resistance movements, and even engaging in covert intelligence activities. From the early days of wireless technology to more recent conflicts, amateur radio operators—often unpaid volunteers—have risked their lives to help keep information flowing and ultimately…
Join us for a Beginners Guide to “Just Getting Stuff Done”
A talk and demonstration that ties in with the new HADARS ‘Construction Guides’, and introduces the basic skills needed to build a small kit, or homebrew project.
Club Members
HADARS Christmas Pie & Peas Night Wraps Up a Fantastic Year
The festive season got off to a cracking start with HADARS’ annual Christmas “Pie & Peas” night (attended by 26 members & guests), a long-standing tradition that never fails to bring the club together for food, fun, and laughter. As the festive season draws near, this year’s event brought together the perfect mix of good…
Reviving Halifax & District ARS: A Journey of Resilience and Renewal
In the rolling hills and steep valleys of West Yorkshire, nestled among the towns of Bradford, Halifax and Todmorden, lies the Halifax & District Amateur Radio Society (HADARS). With a storied past dating back to the 1920s, this small yet vibrant club has faced its share of challenges, particularly in recent years. Understanding its current…
OSCAR-7: The Oldest Operational Satellite in Orbit
When OSCAR-7 (Orbiting Satellite Carrying Amateur Radio) was launched on 15 November 1974, few could have predicted its longevity. Nearly 50 years later, this amateur radio satellite holds the distinction of being the oldest operational satellite still functioning in orbit. This remarkable achievement underscores the ingenuity and resilience of the amateur radio community and serves…
HADARS Website Statistics: A Promising Start!
Since the launch of our brand-new HADARS website in late November, we’ve been keeping an eye on how people are finding and using it. The response so far has been encouraging, and we’re thrilled to share some insights into how the site is performing. This data offers a glimpse into how the website is connecting…
Moving HADARS to a New Home on the Internet
HADARS has recently moved its website to a new “home” on the internet, and we’d like to share why this was important for us and what it means for you, our members and visitors. Why Did We Need to Move? Imagine that our old website was like an old house—one that hadn’t been renovated in years.…
Welcome to the World of Amateur Radio: A Beginner’s Journey
Amateur radio is an incredible hobby, full of hands-on learning and creative experimentation. But for many beginners, the path from enthusiasm to practical skills can seem daunting. That’s where our Beginner Guides come in. Here at HADARS, we believe in bringing the joy of practical construction back to amateur radio, so you can dive into…
Churches on the Air (CHOTA) 2024
The Churches on the Air (CHOTA) 2024 event, held on September 14th, continued its tradition of fostering connections between amateur radio enthusiasts and church communities worldwide. This annual event, organized by the World Association of Christian Radio Amateurs and Listeners (WACRAL), saw participation from numerous church-based radio stations across the globe. The event is designed…