TUNNELS (Part 2): WITH DIGITAL RADIO THE COMPLEXITY INCREASES

A mobile RAI vehicle conducting tests for digital radio reception in the tunnels
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With the development of DAB comes the question of how to add services to an existing system. A study conducted in Italy in 2017 by the RAI-Radiotelevisione Italiana Research Centre, in anticipation of the development of digital radio, highlighted the criticalities of using the structures built to broadcast the channel over Isoradio traffic. It would be necessary to intervene on the device that mixes the signals before conveying them on the slit cable: a costly and complex operation. It was therefore suggested, in order to drastically reduce costs, to use the radio wave system by re-transmitting the signal from an antenna placed at one end of the tunnel, or, in longer tunnels, at both ends.

A leading country…

On the BPC website, you can find in-depth technical information on tunnel diffusion systems
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Italy, due to its orography, is the second largest country in the world in terms of the number and length of tunnels, second only to China and followed by Japan, Norway, Switzerland, Austria and France. And it can count on world-leading companies in tunnelling, underground construction and transmission systems with a high level of integration such as those used in the Frejus (12.8 km) and Mont Blanc (11.6 km) international motorway tunnels. More than 30 channels are available in these tunnels for the services of Italy and France: fire brigade, border police, Carabinieri, Gendarmerie, medical emergency vehicles and FM broadcasting with RDS. The systems are managed by a control centre that can interrupt radio programmes to broadcast emergency messages.

…but Switzerland also has its leadership

On the website of SRG SSR, the company that runs Switzerland’s public radio and television service, you can find a list of the 193 road tunnels where you can listen to digital radio
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Switzerland is well advanced on DAB. Network expansion has been going on since 2014: the country had given itself a ten-year horizon for the switchover to digital radio, which will take place at the end of 2024 when the analogue FM transmitters will be switched off. Currently, SSR network coverage for indoor reception is 98%, while for outdoor reception and car radios it even exceeds 99%. Today, therefore, Switzerland boasts the best DAB+ coverage in the world, with some 193 tunnels longer than 300 metres being illuminated by the signal already in 2018 with an investment of around CHF 30 million. The areas not covered are mainly located in peripheral regions, a problem that will be solved in the coming years.
(Writteb by Fabrizio Carnevalini)

ITALY: RADIO ZETA BECOMES NATIONAL

Radio Zeta becomes national
Lorenzo Suraci, president of the RTL 102.5 radio group that includes Radio Zeta and Radiofreccia, pictured during the press conference in which he announced the acquisition of the national concession
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From being a multi-regional broadcaster, Radio Zeta has become national, with the purchase (on May 25) of the concession that gives it the right to broadcast its signal no longer over certain regions but throughout Italy. The authorization to broadcast the signal nationwide was held by Monradio, a company in the Mediaset galaxy, the second-largest television hub after RAI (with the Canale 5, Italia 1 and Rete 4 brands) and which through Mediaset Radio owns four radio networks (Radio 105, R101, RMC – Radio Monte Carlo and Virgin Radio) and the superstation Radio Subasio. To keep it from lapsing, the concession had been used for years to broadcast (lately from a single facility located in Valtellina, in the province of Sondrio, in Lombardy) Radio Orbital, a Portuguese broadcaster. Why a foreign broadcaster on Italian soil? Because the concession had been created in the 1990s (requested from the then Ministry of Posts and Telecommunications) by Radio Milano International to repeat a foreign broadcaster, VOA-Voice of America. And when Monradio took over the RMI network (which has since become Radio 101-One O One) from bankruptcy in 2005, turning it into the current R101, it found itself with a second valuable concession to use.

How many national radio stations are there?

In the table produced by Confindustria Radio TV, for each radio network the company that owns it, the publishing group to which it belongs, and the type of concession (public, commercial or community) are indicated
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The announcement of the acquisition was made by Lorenzo Suraci, president of RTL 102.5, during the press conference of “Future Hits Live 2022,” a festival promoted by Radio Zeta. In Suraci’s statement reported on the website of the association Confindustria Radio TV, of which the publisher is also a director, it is stated that “Radio Zeta to all intents and purposes is the 18th national radio station.” However, the same Confindustria, in a study on national advertising some time ago, had published the list that we reproduce, which counts 21. Since then Radiofreccia has turned into a commercial radio station (in 2021) thus leaving Radio Maria as the only national community radio station, while Radio Radicale, which has a commercial concession, does not carry advertising.

Acquisitions restart

Radio Zeta was established 1 January 2016 on the frequencies taken over from the multi-regional radio station of the same name
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Radio Zeta can now complete its national coverage. It has 256 repeaters, less than half the number of Radiofreccia (the group’s other station has 545) and one-third of flagship RTL 102.5 (which can boast 765). After all, the radio station had to concentrate only on certain regions in order not to exceed coverage limits, which the law sets at 15 million potential listeners for superstations (broadcasters with multi-regional coverage). To reach uncovered areas, the broadcaster is acquiring dozens of new frequencies in different regions, either by taking over redundant channels from other broadcasters in the group or by purchasing them. This could revitalize somewhat the frequency market, which has been depressed by the crisis and with prices in free fall. This is a typical anomaly in the Italian market, in that no new authorizations have been issued since 1990 (pending regulation that never happened), so they must be purchased from other publishers.

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