For the last 100 years, the International Amateur Radio Union (IARU) has worked tirelessly to promote innovation in our field and to encourage the growth of amateur radio in communities throughout the world.
From our early years, we have safeguarded radio frequencies for amateur services and coordinated with other radio spectrum users through the International Telecommunication Union (ITU).
As we enter our second century of service, we want to celebrate recent developments that are being advanced by our members.
As always, World Amateur Radio Day on 18 April is when we, the member societies of the IARU, can show our capabilities to the public and enjoy global friendship with other amateurs worldwide. This year, we have dedicated the day to “Advancing the spirit of amateur radio through innovation.”
Innovation in the amateur service
Amateur radio operators have always been at the forefront of advances in radiocommunication technology. Radio amateurs were among the first to experiment with frequencies below 200 megahertz (MHz) and the use of single sideband (SSB) communications.
The launch of the first amateur satellite in 1961 led to the global recognition of the amateur satellite service in ITU-led radio spectrum coordination.
Amateur two-way communication by reflecting signals off the moon – Earth-Moon-Earth, or moonbounce, was achieved later in the decade, first on 1296 MHz and later, 144 MHz.
Joseph Taylor Jr. (callsign: K1JT) is a Nobel Prize-winning astrophysicist who developed the WSJT software suite. This software revolutionized weak-signal communication using digital techniques for meteor scatter, moonbounce, and long-distance FT8 contacts.
Other amateurs such as Tony Brock-Fisher (K1KP) and Brian Machesney (K1LI) have pioneered high-efficiency, low-distortion transmitter technology for amateur services.
Innovation starts with our member-societies
The IARU’s 170 member-societies, along with their individual members, actively promote innovation in the amateur services.
Our society in Chile, RCCH, has set out to integrate modern digital tools into amateur radio, strengthening technical training, facilitating access to knowledge, and encouraging experimentation among both new and experienced operators. They have developed a digital laboratory that supports practical application of technical knowledge.
One radio amateur in Australia with the callsign VK5KK has built a 241 gigahertz (GHz) integrated continuous wave (CW)/digital transceiver and shared the construction of the radio with the amateur community to encourage use of that portion of the spectrum.
Members of LABRE, our member-society in Brazil, have publicized technical advances such as tunable filters, power meters, and Doppler correction systems.
OVSV in Austria has promoted transverter kits to enable access to higher frequency bands.
Many societies have also encouraged “mesh” networks, creating decentralized, low-power, self-healing communication systems without reliance on Internet or cellular infrastructure.
Collectively, as the IARU, we collaborate with ITU to promote science, technology, engineering and mathematics (STEM) in developing countries and among younger people.
IARU Intruder Watch Service
Other radio signals sometimes interfere with recognized services, contrary to ITU and national regulations.
The IARU’s Intruder Watch Service (IARU IWS) is dedicated to the search, classification, identification and removal of non-amateur signals causing harmful interference to the amateur services. Using advanced SDR (software-defined radio) capabilities and other tools, the IARU IWS can efficiently monitor the amateur spectrum and provide a valuable reporting service to inform national administrations.
Innovation in emergency communications
The IARU has been pleased to work with ITU’s Telecommunication Development Sector (ITU-D) to provide emergency communications workshops, training people around the world on amateur radio innovations that can save lives.
ORARI in Indonesia has developed a tsunami warning system using narrowband ultra-high frequencies to activate sirens in coastal areas.
Our societies in Sri Lanka (RSSL) and New Zealand (NZART) are developing emergency communication skills in local communities. Amateur operators have proven essential during major emergencies, maintaining vital links – including between emergency centres and isolated communities – when conventional systems failed.
CubeSats and higher frequencies
In partnership with ITU, we are at the forefront of satellite communications, too, with many schools and universities building CubeSats that utilize amateur satellite frequencies.
Amateur operators continue to make progress above 144 MHz for Earth-Moon-Earth and other communications, as well as experiments with our microwave allocations up to 24 GHz.
As we enter our second century, we look forward to further projects and partnerships with ITU. We remain committed to protecting key services, advancing innovation, and optimizing spectrum use for the benefit of all.
Check out ITU’s newly updated Handbook on Amateur and amateur-satellite services.
Source: https://www.itu.int/hub/2026/04/advancing-the-spirit-of-amateur-radio-through-innovation/
