Started in April 2005, the Radia network is an international informal network of community radio stations that have a common interest in producing and sharing art works for the radio. In 2024, the network gathers 22 radio stations from 21 cities across 15 countries, speaking 9 different languages.^[1] It also organizes linked-up events and special broadcasts. Radia intends to be a space of reflection about today's radio and radio art. Its activities try to contribute to intercultural exchange and artworks' and artists' circulation.

The network's name freely refers to La Radia,^[2] a Futurist manifesto written by Filippo Tommaso Marinetti^[3] and Pino Masnata in 1933. The network's founders dropped the La to distance themselves from the Futurists' political views. As it stands alone, "radia" is simply "radio" or "radios" in some languages.

The Radia Network's basis is a weekly 28 minutes show broadcast by all the stations. Each station produces the show in turns. Every round of shows is called a season.

Members of the Radia Network are radio stations, webradios and art-radio projects that broadcast the Radia weekly show and produce shows in turns.

• 15–18 October 2004: Resonance "Radio Art Riot", a four-night event bringing together some of the foremost radio artists and thinkers from around the world in a studio-as-creative-lab situation which featured round table discussions, live radio art, performances at venues around London and streamed events from other countries. Themes included 'Plunderphonics/Sampling', 'Copyright/Copyleft' and 'Radio Text'. This was the first time that some of the radio stations that would later become Radia worked together - Resonance from the U.K., reboot.fm from Germany, Orange and Kunstradio from Austria, Tilos from Hungary and Radio Cult from Bulgaria.
• 10–14 April 2006: Meeting in Lisbon and co-producing of a radio art festival with Rádio Zero under the banner of RadiaLx2006.
• 15 September 2006: First Radia special, simultaneously broadcast live on 9 radio stations: Time labs is a collection of one-minute pieces from artists of the Radia Network. It was released for the final conference of the radio territories project.^[11]
• April 2007: The Radia Network has received an honorary mention at the 2007 Prix Ars Electronica.^[12] According to the Ars Electronica website, "The Radia Network is a community of independent radio stations who have combined to facilitate an ongoing shared cultural initiative. The stations, based throughout Europe, share in weekly commissioned pieces that explore radio as an art form. Each station produces a piece in turn, which all of the partners then publish. The pieces do not seek to promote a common language, but to celebrate the diversity of the breadth of their contributors. It uses the possibilities opened up by the net to share the work and ideas not only of the stations but also of the artistic communities that themselves represent the audience of each contributor and then, through extension, of the whole."
• 19 July 2007: The Radia Network is presented at the Radio Grenouille's Grenouille Capitale festival in Paris, with a special piece by Radio Free Robots collective broadcast on Radio Campus Paris.
• 28 October 2007: The Radia Network was invited by the Radiophonic festival in Brussels. Radioactive Radiophony is a 4-hour live show made with in situ and streamed performances, simultaneously broadcast on 13 radio stations.
• December 2007 – January 2008: Diverse retrospectives of the Network's recent activity. 3 journeys through Radia on ÖRF Kunstradio, a Radia retrospective on Resonance FM, Espectro Electro Magnético on Antena 2 (Rádio e Televisão de Portugal).
• 28 February – 8 March 2008: Radia shows are featured daily on the "AV festival radio station" in Newcastle. Besides this regular shows from Radia member stations are broadcast on Soundscape FM in Sunderland.
• 20 to 28 September 2008: the RadiaLx2008^[13] festival hosts a meeting for Radia and promotes Radia shows and Radia artists performances in Lisbon, Portugal.
• 28 December 2008: a special 2008 review/mashup is broadcast at Kunstradio.
• Selected works from the more than, at the time, 200 productions of Radia shows could be listened during the 2009 edition of Festival Silêncio, promoted by Goethe-Institut Lisbon, Portugal.^[14]
• A special selection of Radia shows was broadcast during Radio Futura, a temporary station of the Future Places Festival in Porto, 14–17 October 2009.^[15]
• Radia gave support to the 3rd edition of the RadiaLx Festival in Lisboa in 2010.^[16] Several stations did live streamings to the Festival and other rebroacasted parts of it.
• In September 2010 Radia started uploading its archive into archive.org.^[17]
• From 12 to 16 October 2010 the full of season 23 of Radia programmes was re-broadcast during Future Places Festival in O'Porto, Portugal, incorporated in the Radio Futura temporary radio station (91.5 MHz FM Porto).
• From October to December 2010 ORF Kunstradio broadcast a series of five radio art programmes specially curated by Radia, that were recorded during the Radia Art Camp in July 2010 at the Gasometer in Oberhausen.^[18]
• From September to December 2012 the first complete retrospective of Radia shows was broadcast on Mobile Radio BSP^[19] as part of the 30th Biennial of São Paulo in Brazil.
• During the Radio Revolten festival in Halle, in Germany, - from 7 to 9 October 2016 - a general meeting of the Radia network took place, mixing performances from members and re-tuning the network for the future.^[20]
• A 21-part programme series called Radiaphiles showcasing member stations and associated artists of the Radia network was produced for and broadcast as part of documenta 14 in Kassel and Berlin from 17 June - 7 July 2017.^[21]