|Type||Broadcast, radio, television and online|
|Motto||Parte del tuo mondo|
|Key people||Dino Balestra|
Radiotelevisione svizzera di lingua italiana (RSI, abbreviated as RTSI until 28 February 2009) is a Swiss public broadcasting organisation, part of SRG SSR. RSI handles production and broadcasting of radio and television programs in Italian for Switzerland. RSI's administrative headquarters are located in Via Canevascini in Lugano-Besso.
"Radio svizzera di lingua italiana" was established in 1925 as "Radio Monte Ceneri", originally named after the mountain where the transmitter was placed. After several years of experimental broadcast, in 1933 the "Società svizzera di Radiodiffusione" (Swiss Radio Broadcasting Corporation) began regular transmissions in Ticino and Grigioni. The intentions of its founders were to promote cohesion in the confederation while promoting the value of the Swiss Italian culture. In the 1930s and 1940s, when most of Switzerland's neighboring states were under fascism, Radio Monte Ceneri was the only Italian language radio free of censorship, becoming the only reliable voice for the Italian population and a prominent outlet for Italian intellectuals: during these years it hosted people like Benedetto Croce and Delio Tessa.
The first television broadcasts started on 18 November 1958, at first produced in studios in Zurich and transmitted with Italian subtitles. In 1961, with the foundation of Televisione svizzera di lingua italiana (TSI), the studios were relocated in Paradiso, near Lugano. This was eight years after the experimental debut of television in Zurich and Genève. The channel began broadcasting in colour in 1968.
During the 1970s, when Italian television was still under the RAI monopoly, Swiss television in Italian was the only alternative to the public network for Italians living in Lombardy and Piedmont: the signal reached the city of Milan. Some important personalities of Italian television, such as Corrado, Mina, Enzo Tortora and the founder of the first commercial television in Italy, Telebiella, Peppo Sacchi worked with TSI.
In December 2005, RSI began digital broadcasts using the DAB system on the Saint Gottard autoroute. On 26 July 2006 at 12:45, SRG SSR idée suisse interrupted analog broadcasting in Ticino making it the first all-digital canton of Switzerland This affected the Italians in northern Italy, as they were deprived of all the TSI channels, with the sole exception of those close to the frontier.
- Remigio Ratti : from 1 January 2000
- Jacky Marti
- Dino Balestra
RSI's radio department is in charge of production and transmission radio programs in Italian language for the Italian speaking Swiss. Its studios are located in Via Canevascini in Lugano-Besso. It was known as Radio svizzera di lingua italiana (RSI) until 2009.
- Rete Uno : general programming
- Rete Due : cultural programming
- Rete Tre : youth-oriented programming
RSI's television department is in charge of production and transmission of television programs in Italian language for the Italian speaking Swiss. Its studios are found in Comano, 5 km north of Lugano. It was known as Televisione svizzera di lingua italiana (TSI) until 2009.
 See also
- RSI Official site (Italian)
- RSI podcast (Italian)
- DAB in Switzerland (Italian)
- Digital television in Switzerland (Italian)
- History of RSI (Italian)