A global celebration of the passion for radio communication

History: How it all began

International Amateur Radio Day is celebrated every year on April 18, marking a defining moment in the history of amateur radio: the founding of the International Amateur Radio Union in 1925, in Paris.

In the early 20th century, amateur radio operators were often seen as experimenters operating on the fringes, with limited and sometimes threatened access to radio frequencies. However, the passion for wireless communication grew rapidly, and the need for an international organization to represent their interests became clear.

As a result, delegates from 25 countries came together to establish IARU—an organization that would go on to represent amateur radio operators worldwide. Its primary mission: to protect and expand the radio spectrum allocated to amateur radio.

Growth within the amateur radio community

Over the decades, International Amateur Radio Day has become a well-established global tradition. Today, the amateur radio community includes millions of operators worldwide, with over 160 national societies affiliated with IARU.

This day is not just a celebration—it’s an opportunity to highlight the essential role of amateur radio in:

• advancing communication technologies
• providing emergency communications (EmComm)
• technical experimentation and education
• fostering international friendship

What April 18 means to a radio amateur

For any radio amateur, April 18 is more than just a date—it’s a day filled with activity and meaning:

• increased on-air activity across all bands
• special event stations with unique call signs
• contests and award programs
• local and online gatherings of radio enthusiasts
• public outreach to promote amateur radio

Each year, IARU also announces an official theme, reflecting the evolution and relevance of amateur radio in modern society.

Events and activities

Around April 18, a wide range of activities take place worldwide:

• international HF and VHF/UHF contests
• special event station activations
• public demonstrations in schools and communities
• technical workshops and presentations
• portable operations (SOTA, POTA, field setups)

For those involved in Emergency Communications (EmComm), this day is also a great opportunity to conduct drills and simulations.

Amateur radio in Romania (YO)

In Romania, amateur radio operators (YO) also celebrate this day with enthusiasm. Through the Federația Română de Radioamatorism and local radio clubs, activities often include:

• special on-air activations
• national contests
• meetups and community gatherings
• outreach initiatives to attract new enthusiasts

Many YO operators choose to go portable, combining amateur radio with outdoor activities such as bushcraft, off-grid living, and field operations—perfectly aligned with the spirit of exploration.

The spirit of amateur radio

Why this day matters

International Amateur Radio Day reminds us that:

• amateur radio is a truly global community
• technology can connect people beyond borders
• curiosity and experimentation drive innovation
• alternative communication systems remain vital in emergencies

A message from Hadrian – YO2BTW

On this special occasion, I would like to send my best wishes to all amateur radio operators around the world:

73 and great DX!
May your passion for radio continue to bring you joy, meaningful connections, and unforgettable experiences.

Whether you are in your shack, operating portable in the mountains, or supporting emergency communications, you are part of an incredible global community that continues to inspire generations.

Happy International Amateur Radio Day!
Hadrian – YO2BTW