Radio broadcasting’s digital dilemma

Eureka 147 DAB: A fragmentary first-born

The development of digital radio broadcast technology began with the launching of the Eureka 147 DAB initiative in 1985 (Lax et al., 2008: 152). German audio scientists invented the digital audio encoding algorithm inherent to the Eureka 147 system, while French engineers developed its broadcast waveform. Unlike analogue broadcasting, where each station maintains its own transmission infrastructure, DAB broadcasters feed their programming into a multiplex transmission facility where it is then bundled with other program services and broadcast as a unified digital stream on spectrum specifically reserved for the purpose. Each multiplex serves a specific geographic area. DAB receivers decode the multiplex signal and play back the program stream that the listener desires. How the multiplex system is operated differs from country to country: most countries reserve space on their multiplexes for incumbent public service broadcasters while the vast majority of remaining capacity is filled by analogue stations that lease multiplex ‘channels’ for a fixed period of time. Although this represents a significant shift in the method of radio transmission (by consolidating the broadcast infrastructure), Eureka’s developers noted that the DAB system would not directly impinge upon legacy analogue radio stations, which would be left to operate normally while the Eureka system was deployed.

Early Eureka 147 research envisioned a digital broadcast standard with functionality far beyond the simple provision of audio. However, a lack of early and overt support for this ambitious goal led developers to scale back their mission to the creation of a digital radio standard that could eventually replace analogue AM and FM broadcasting. In 1987, 19 public service broadcasters and electronics organizations from France, Germany, the Netherlands and the UK founded a consortium for the collaborative research and promotion of the Eureka 147 standard (O’Neill and Shaw, 2010: 32). DAB was contextualized as a way by which Europeans could ‘take the lead in the digital terrestrial radio space and, hopefully, promulgate a world standard’ (O’Neill et al., 2010: 19).

Intrinsic to achieving this aspiration was pan-European regulatory consensus: each country needed to harmonize their DAB spectral allocations and operational rules so as to create the conditions for a truly continental digital radio system. This would send an important signal to the world that DAB was a viable replacement for analogue radio service. However, this consensus was never realized, which has left the technology’s implementation in the hands of individual countries. Foregoing basic functional interoperability significantly dampened the enthusiasm for DAB among consumer electronics manufacturers, who were not enamored with the idea of producing receivers which might work in one European country but not another (Pizzi, 2004c).

Consequently, the actual implementation of DAB was forced to navigate the incumbencies found in each nation’s system of broadcast organization. The uptake of DAB has been greatest in countries where public service broadcasters dominate the radio industry (Ala-Fossi and Stavitsky, 2003: 66). However, the lack of DAB’s ability to accommodate local programming has proven to be a major factor in its struggle for adoption (O’Neill and Shaw, 2010: 33). Eureka 147 consortium members sold the promise of increased audio quality and a vaguely defined potential for ancillary services such as datacasting as the principles by which a digital radio transition would succeed (Cohen, 1995; n.a., 1996b, 1996c). Qualitatively, the operative rationale for Europe’s digitalization of radio broadcasting has not been substantive enough to spark deep interest in DAB among regulators, broadcasters or the listening public. Furthermore, developments within Eureka’s technological suite have complicated the technology’s uptake by both broadcasters and radio listeners.

In 1995, the British Broadcasting Corporation became the first broadcaster to implement a multiplex DAB transmission system. Hailed as ‘a new dawn for radio,’ the milestone was characterized as the most significant development in the medium’s history since the introduction of FM stereo broadcasting. The Eureka 147 consortium confidently predicted that its technology would ultimately replace analogue AM and FM service completely (Cohen, 1995). By the end of 1995, members of the consortium founded the European DAB Forum (EuroDAB) to promote the technology’s spread throughout the continent. This was later reconstituted as the WorldDAB Forum in 1997, suggesting confidence among proponents that the system would quickly catch on globally. One of the Forum’s primary talking points emphasized the need to digitize radio simply for the sake of being digital: not to undertake the transition would leave the medium bereft as an analogue adjunct to an increasingly convergent media environment, which would have unspecified but negative consequences (O’Neill and Shaw, 2010: 33–34; O’Neill et al., 2010: 21).

The hype surrounding the launch of DAB was quite impressive. Five companies exhibited Eureka-compatible transmitters at the US National Association of Broadcasters’ annual convention in 1996 (Ross, 1996). The consortium projected that Europeans would purchase 50 million DAB receivers in the first 10 years of digital radio service, with sales quickly rising to 35 million per year thereafter (O’Neill and Shaw, 2010: 35). By the end of the 20th century, Australia, Canada, Germany, and Switzerland announced plans to test the Eureka system; France, India, and Italy were in the midst of DAB experiments; and Denmark and the Netherlands reported progress toward the provision of nationwide DAB service (Clark, 1996). By 2002, the WorldDAB Forum represented companies and organizations spanning 25 countries (n.a., 2002), and by 2004 more than 284 million people were covered by some sort of DAB signal; 400 digital program services were available in 20 different countries (Ala-Fossi and Stavitsky, 2003: 64). In 2006, the Forum changed its name again, to WorldDMB (‘digital multimedia broadcasting’). More than 1000 DAB program services now existed in 40 nations, reaching 500 million potential listeners (Maxson, 2007: 19).

In reality, however, the actual adoption of DAB by receiver manufacturers and the public was tepid at best. Although many broadcasters had committed to programming within the DAB transmission infrastructure, without affordable receivers there would be no meaningful listener base (Cohen, 1995). A year after the BBC launched DAB service, no receivers were yet in mass production. The delay was based, in part, on inter-Forum squabbles over DAB’s datacasting standard. The British and Germans each developed their own datacast protocol, which were not cross-compatible. This dispute would not be settled – and no datacast-capable receivers would be produced – until 1998. Thus early-adopter DAB broadcasters took to the air with minimal datacasting functionality, and listeners were not attuned to the feature (Cohen, 1998; n.a., 1996a).

The patchwork manner by which DAB systems were deployed across the continent did not help matters. Multiplexes could use different swaths of spectrum, depending on national availability. As a result, DAB multiplexes in one country were not necessarily on the same frequencies as those in a neighboring country. This complicated the task of making interoperable digital radio receivers. DAB proponents first estimated in 1996 that an interoperable receiver would enter the market with a price point ‘below $750’ (Careless, 1996b). By 1999, after European broadcasters had spent an estimated €300 million on DAB transmission development, there was still no inexpensive means by which to listen (Ala-Fossi, 2010b: 49). In 2002 – seven years into DAB’s initial proliferation – the lack of interoperable and inexpensive receivers led some countries to abandon further DAB testing and curtail existing digital broadcast services (Lax et al., 2008: 154; Pizzi, 2004c). Survey data from several European countries showed very little listener interest in the technology (Lax et al., 2008: 151).

On the regulatory front, state-run public service broadcasters led the DAB development effort, while commercial broadcasters were treated as afterthought-constituencies during its formative policymaking years (Jauert et al., 2010: 106–107). DAB proponents assumed that public service broadcasters would maintain their place of primacy within the European radio industry; this was a strategic miscalculation. The growth of Europe’s commercial radio sector over the last 15 years has given it increasing political and economic power. Commercial broadcasters’ lack of enthusiasm for DAB has been exacerbated by an economic slowdown that, over the course of the last decade, has hit the European radio industry quite hard: several commercial DAB program providers forfeited their multiplex channels because of falling revenue (O’Neill and Shaw, 2010: 39). With the sentiments of commercial broadcasters ranging from lukewarm to cynical on the potential for DAB, this has fed further anxiety among receiver manufacturers about investing in a new digital product that may not contain the same program diversity as its analogue counterpart (McDonagh, 2000). No pan-European interoperable DAB receiver yet exists (n.a., 2008e).

In addition, the European Commission appears uninterested in pursuing substantive policymaking regarding radio’s digital transition. The EC, argues O’Neill and Shaw (2010), has been preoccupied with Europe’s digital television transition, and thus ‘have left the success or failure of DAB in the hands of “market players”’ (2010: 36). DAB policy ultimately defaults to the national level for resolution, where by and large a lack of ‘urgency and political priority’ has ‘deferred the question of whether AM and FM broadcasting needed to be replaced’ at all (2010: 37–38). This lack of regulatory engagement at both the continental and national level further aggravates the tensions between market players to which the successful implementation of DAB has been left.

Further complicating matters for Eureka proponents is technological progress itself. More than 20 years have passed since DAB’s initial development; several upgrades and new variants to the Eureka 147 system now exist. These include DAB+ (essentially an upgraded version of the original DAB system), DVB (digital video broadcasting, with two variants – one for televisions and one for portable media devices), and DMB (digital multimedia broadcasting, which can convey many forms of digital content to a variety of devices). All branch from the original Eureka 147 design, but none are interoperable. Some countries are considering implementing new Eureka variants to complement incumbent DAB systems; others are shutting down old multiplexes with the intent of replacing them entirely; still others are canceling all digital radio-related projects until the marketplace either settles on a single Eureka standard or receivers become interoperable between them (Ala-Fossi, 2010b: 57–58).

Today, the pan-European perspective on radio’s digital transition is a muddy one. While there is consensus that ‘[b]ringing radio into the digital era means more than simply changing its mode of delivery into digital form’ (O’Neill et al., 2010: 17), the steps by which this might occur remain unclear. After conducting interviews with radio broadcasters in several countries, Ala-Fossi (2010a) concluded that there is ‘no single platform or technology’ that constitutes the key mechanism for radio’s digital transition (2010a: 160–161). Competition between platforms, audience fragmentation, and uncertainty among radio broadcasters and regulators has probably led to ‘less consensus now about the future of radio than at any time in the past’ (O’Neill et al., 2010: 20). Ala-Fossi (2010b: 45) explains that, depending on one’s perspective, ‘radio is currently either facing the danger of fragmentation or is surviving by infiltrating new platforms and becoming more polymorphic’.

In practical terms, European broadcasters now see radio as a multi-platform medium, with distribution via incumbent analogue technology, DAB variants, satellite and the internet all playing a factor in radio’s future (O’Neill and Shaw, 2010: 39–40; O’Neill et al., 2010: 20). Analogue radio broadcasting remains alive and well, and is expected to continue to play a significant role in the radio space: at its annual conference in February 2010, the Association of European Radios – a continental trade group representing more than 4500 commercial broadcasters – approved a resolution opposing any mandatory analogue/digital radio transition (Goddard, 2010a: 260–261). O’Neill and Shaw (2010) assert that although DAB was portrayed as a replacement for analogue broadcasting, ‘by the very nature of who framed the questions, [DAB development actually produced] the best and most innovative digital radio solution which would best serve the needs of the status quo’ (2010: 39).

Around the world, Eureka 147 variants have found minimal purchase at best in a handful of countries – but in no place is the technology’s future truly guaranteed. As the first country to roll out a DAB network, the UK has been the site of the most substantive discussion regarding radio’s digital transition. In order to entice broadcasters into the digital domain, regulators offered to extend the terms of their existing analogue licenses in an exchange for a commitment to produce DAB-exclusive programming (Rudin, 2006: 169–170). This practice conferred upon broadcast incumbents the status of preferred entrants in the digital radio environment, and rising political and economic power in the hands of commercial broadcasters began to reshape the DAB service itself. Multiplexes, for example, were established in such a way as to roughly replicate the coverage of existing analogue radio markets. The net effect, concludes Rudin (2006), has been to ‘greatly restrict the flexibility of the system – at the local level DAB is no more efficient in the use of frequency spectrum than analogue’ (2006: 171).

In 1996, the passage of the UK Broadcasting Act unleashed an unprecedented wave of consolidation within the country’s commercial radio industry. DAB deployment was affected: national broadcast conglomerates began to simulcast programs from one station on many multiplexes and got into the business of owning and operating the multiplexes themselves (Goddard, 2010a: 65; Lax et al., 2008: 162). This allowed vertical integration to occur within the nascent digital radio industry (Lax et al., 2008: 170, 173). Yet UK DAB proponents trumpeted the system’s program diversity: by early 2001, more than 40 DAB program streams were on the air in the London area alone (Calhoun, 2001). In 2002, the BBC launched its first DAB-only station, 1Xtra, featuring an urban contemporary music format (Stimson, 2002b). The following year, the BBC announced it would launch five new national digital radio services and develop local and regional multiplex systems to increase digital program choice (Hallett, 2003a). By the end of 2003, DAB proponents hoped to sell 500,000 receivers (Stimson, 2003c) – a far cry from the adoptive goals articulated in the previous decade.

However, an increase in program diversity came at the expense of improved audio quality relative to analogue radio. Some multiplex operators believed it was more important to divide up their available bandwidth into as many program streams as possible – sacrificing the maximum possible fidelity available per channel – while others chose to carry fewer program streams in higher fidelity (Pizzi, 2004b). By 2004, the BBC’s official position on the parsing of multiplex channels favored program diversity over fidelity, thus undermining the original selling point of DAB in the UK (Rudin, 2006: 172). The shift toward cramming as many program streams as possible into a multiplex has led to a situation where, according to O’Neill (2010b), ‘bitrates are determined the minimum necessary for acceptable listening, not the maximum or even the recommended levels for effective audio performance … [This results] in a quality of [DAB] transmission that is frequently described as “worse than FM”’ (2010b: 92–93). As the number of multiplexes on the air grew, so did complaints about inadequate signal coverage. Regulators’ response to this problem was not to investigate the condition of the multiplex environment itself; instead they required DAB receiver retailers to install signal-amplifiers in their stores to provide potential buyers with a positive initial listening experience. Imagine the consternation when those listeners took the radios home and found that they didn’t work as well as advertised (Goddard, 2010a: 30–32).

Disappointment among broadcasters and listeners with the functionality and affordability of DAB technology grew throughout the first decade of the 21st century. Coupled with the onset of a global economic downturn, the UK’s digital radio transition began to flounder. In 2008, many commercial analogue broadcasters abandoned their DAB program services citing prohibitive operational costs (Goddard, 2010a: 38–39). Goddard (2010a) believes DAB service providers are losing an average of £27 million per year, which ‘represents around 5% of commercial radio’s revenues, a significant impact on an industry which is only marginally profitable overall at present’ (2010a: 116). At the BBC, there is movement away from further investment in DAB-specific programming. The institution has increasingly funneled resources into alternative digital audio distribution platforms based around the internet, such as podcasting and streaming-on-demand (2010a: 89–91). Goddard notes that ‘[t]he most listened to exclusively digital radio station in London is BBC 1Xtra, which ranks 22nd and attracts only a 0.5% share of listening in the market’ (2010a: 125). UK regulators have sanctioned the deployment of newer Eureka variants, such as DAB+ and DMB, but there is no political or economic momentum to upgrade an ‘upgrade’ which has not provided a meaningful return on broadcaster investment (n.a., 2006b; Pizzi, 2008). Furthermore, since DAB+ is not backwards compatible, broadcasters would either have to retrofit or construct an entirely new multiplex network to support the protocol, and radio listeners – including those who enjoy DAB – would be forced to purchase new receivers. It is not economically feasible for today’s UK radio broadcasters to maintain an analogue transmission system and carry the cost of production and delivery of unique DAB content to a multiplex channel which, in the case of commercial and community broadcasters, it must also lease.

As of 2010, only 9.2% of commercial radio listening in the UK was conducted via DAB, while 79% of all new radios sold were analogue models (Goddard, 2010a: 9). In 2007, there were 34 million cars on UK roads, but only 200,000 had DAB receivers installed. That year, 2.4 million new vehicles were purchased, but only 20,000 drivers chose to install their own DAB receiver (2010a: 85). In the decade since nationwide DAB service was established in the UK, more than 7 million DAB receivers have been sold – but in 2010 alone, more than 8 million analogue receivers were purchased (2010a: 15). Commercial broadcasters have proposed restricting stations from distributing digital content over any mechanism other than DAB, and have even suggested giving away one DAB receiver to every household in the UK, but these ideas have gained no traction (2010a: 52–55).

The story of digital radio in the UK actually represents the most positive picture of DAB in Europe. Elsewhere, the condition of the technology’s uptake is much more confused. Some countries remain entirely noncommittal about digital radio: in Ireland, for example, the country does not suffer from FM spectrum congestion. Irish broadcasters (both commercial and noncommercial) remain focused on the provision of local programming and a healthy community radio sector exists. As a result, Irish regulators have their attention on the eventual promulgation of the Eureka DVB standard, which incorporates the provision of digital audio as just one functionality among many, and they are in no hurry to begin the transition (Branigan, 2004; Lax et al., 2008: 159–160).

France’s on-and-off affair with DAB is illustrative of the contention surrounding radio’s digital transition. In 2009, France settled on the DMB standard of the Eureka suite and proposed a timetable to cover 95% of the national population with digital radio service by 2013. Commercial broadcasters are ‘increasingly ambivalent’ about this proposal, however, expressing concern that the infrastructure will favor homogenized national content over local programming. They have initiated legal action against French broadcast regulator CSA in opposition to the rollout plan (Goddard, 2010a: 107, 131–132). Within the French government itself, some call the DMB launch proposal ‘implausible’ and demand that an economic model to support the service be identified before an estimated €600 million to €1 billion is spent on the buildout of infrastructure (2010a: 166–167). As a result, the DMB launch has been indefinitely delayed (2010a: 302). Given that French engineers played an integral role in the development of Eureka 147 technology, the country’s level of noninvolvement in its future is surprising.

Germany, Eureka’s other founding developer-nation, has already tried and failed to implement a DAB system. Regulation of spectrum allocation is a state-level function in Germany, not a federal responsibility. As a result, there has never been a coordinated plan for the national rollout of DAB service. In 1996, Bavaria became the first German state to license a multiplex, containing two channels from public service broadcasters and three from commercial stations (n.a., 1995). However, less than a year after the launch of the multiplex, VPRT – the trade association for commercial German broadcasters – announced it would no longer promote DAB programming. It complained about the ‘harmonizing’ coverage attribute of the DAB system, the program subsidies given to public service broadcast-competitors, and a lack of receivers in the marketplace (Lawton, 1996). By 2002, although state governments continued to offer multiplex licenses, there were few takers (Ory, 2000; Stimson, 2002b).

During first decade of the 21st century, German broadcasters tinkered with alternatives to DAB, including DAB+, DVB, and other technologies, but the lack of unified, federal direction on radio’s digitalization has consigned these practices to the experimental level (Lawson, 2008). In 2009, German broadcast regulators rejected a proposal to spend €42 million to continue building out the DAB network, because ‘substantial elements of the criteria agreed previously with broadcasters had not been met and the viability of the projects could not be demonstrated’ (Goddard, 2010a: 100–101). Efforts have since been redirected toward the construction of a DAB+ transmission network, which launched in August of 2011 and should provide nationwide coverage by 2014–2015, though the ultimate success of this second uptake remains to be seen (n.a., 2011d).

Germany’s immediate neighbors have not fared much better. In Switzerland, broadcasters briefly experimented with the USA’s digital standard, HD Radio. Tests commenced in 2007 and were declared successful in 2008 (n.a., 2007e; Ruoss, 2008). The following year, five commercial stations began broadcasting in HD (n.a., 2010b), but further deployment suddenly screeched to a halt. In 2010, Markos Ruoss, the owner of the station Radio Sunshine and the man primarily responsible for the exploration of HD Radio, abruptly ended his association with the technology’s proprietor, iBiquity Digital Corporation. With him went the rest of the broadcasters who had also experimented with HD broadcast technology (n.a., 2010d). In the meantime, Swiss regulators are pushing for the launch of DAB+ service; however, five of the eight multiplex licenses tendered for consideration expired without any applicants for them (Goddard, 2010a: 172; n.a., 2010b: 10).

Austrian broadcast regulators have put the country’s digital radio transition on indefinite hold, as there is no consensus on which form of Eureka technology to adopt. Commercial broadcasters in Austria believe the only way that a digital radio transition could succeed is under some sort of pan-European standard, which is politically infeasible (Goddard, 2010a: 156). In Poland, regulators announced their intent to implement DAB in 1995, and the first multiplex license in Warsaw was awarded in 1997, but there is no momentum for a national DAB rollout (Ladika, 1998; Seidler, 1995).

Like Germany, the Netherlands has also abandoned the notion of a coordinated digital radio transition. The Dutch DAB Foundation ended experimental broadcasts in 2000 because ‘there [was] no government policy on licensing DAB frequencies’. The lack of DAB receivers in the marketplace was highlighted as especially problematic (Stimson, 2000b). Over the intervening decade, DAB deployment and uptake has remained marginal. Regulators in the Netherlands attempted to rejuvenate the proliferation of digital radio in 2010 by offering automatic renewals of analogue radio station licenses in exchange for a commitment to provide DAB programming. Dutch commercial broadcasters did not react favorably to the plan; one noted that their analogue station reaches more people online than it does over the network of DAB transmitters it’s been feeding programming to. A proposal to phase out analogue broadcasting by 2015 has been dashed (Goddard, 2010b).

In Denmark, regulators are debating an analogue radio shutoff in the 2016–2018 timeframe, but a large portion of the country’s broadcasters oppose the idea. Only 1.5 million DAB receivers have been sold in Denmark as of 2010 and they account for just 8% of total radio listening (Goddard, 2010a: 262–263). Danish broadcasters interviewed by Ala-Fossi (2010a: 157–158) suggested the key mechanism for radio’s digitalization would most likely be the internet.

Elsewhere in Europe, DAB’s implementation has been similarly haphazard. Spain formally adopted the DAB standard in 1997, but its promulgation has never been a high priority among regulators (Corominas et al., 2006: 122–123). In 2008, the WorldDMB Forum assessed the situation in Spain to be ‘at a standstill, as … radio groups remain unsure due to the perceived threat to their [analogue] markets’ (Jauert et al., 2010: 115). The following year, Spanish regulators declared the DAB system ‘obsolete’ and a ‘road to nowhere’ (Goddard, 2010a: 107). In Norway, regulators have abandoned their DAB rollout and now seek to promulgate DMB service; in doing so, they hope to terminate analogue radio by 2017 (n.a., 2011a). However, the number of analogue receivers sold still outpaces digital ones by a factor of eight (Hallett, 2006). Between 1998 and 2008, Norwegians purchased a total of 8 million radios, of which 300,000–400,000 were DAB receivers (Goddard, 2010a: 118). In 2010, sales of internet-streaming radio receivers surpassed the sale of DAB receivers. The Norwegian Electronics Industry Association now estimates that there are somewhere between 12 and 15 million FM radios in regular use, compared to just 290,000 DAB receivers. The idea of a digital/analogue switchover is not popular: 78% of Norwegian broadcasters oppose a hard transition deadline (2010a: 257–259).

Sweden was also an early-adopter of DAB technology, but began turning it off in 2002 after it failed to realize the promised improvements over analogue broadcasting (Pizzi, 2002b). In December of 2005, the government of Sweden announced it would not invest any more money in DAB infrastructure. After short-lived experimentation with DVB (Goddard, 2010a: 133–134), Sweden is now testing the DAB+ variant of the Eureka system. Although Sweden has had some form of DAB service on the air since 1995, it only reaches 35% of the national listening population. DAB+ receivers are for sale in Sweden, though they cost about $200 (Zametica, 2010).

In Finland, public service broadcasters were supposed to lead the country’s DAB vanguard, with commercial broadcasters to follow, but this never occurred. Public broadcaster YLE began DAB broadcasts in 1998 only to discontinue them three years later, ‘clearly see[ing] little future in the technology’ (Lax et al., 2008: 155–156). Finland has since focused on DVB proliferation and hopes to provide digital radio as a subsidiary function through this protocol. In 2005, all DAB services were officially terminated in Finland, effectively ending the country’s experimentation with digital radio as a stand-alone broadcast medium (2008: 163).

Many other European countries have experimented with Eureka 147 technology but are unwilling to move toward full-scale adoption. Hungary began testing DAB transmissions in 1995; a new multiplex was installed to complete digital radio coverage of Budapest in 1998, but expansion efforts ended there. The Czech Republic, Romania, and Slovenia have all tested DAB, but remain uncommitted to its proliferation (Ladika, 1998). In Greece, regulators established a DAB multiplex in Athens for the 2004 Summer Olympics, but have not made any significant moves to expand the service since then (n.a., 2004). Malta has launched a DAB+ network, but the island nation needs little spectrum and few multiplexes to provide national coverage. Yet even there the wholesale replacement of analogue radio by digital broadcasting is not a priority (n.a., 2008d).

Non-European adopters of Eureka 147 technology have suffered similar fates. In Israel, the government is accepting bids from private companies to build out a DAB+ or DMB network, or both. Authorities expect to subsidize construction at a cost of roughly $6.4 million. There is, however, no timetable on implementation (Koerner, 2008). Several countries in South America have investigated the Eureka feature set, but only Brazil seems committed to an actual buildout (Behrensdorf, 1998; Stimson, 2003d). Even so, it is not foreclosing other options: Brazilian regulators have granted stations the authority to experiment with both HD Radio and Digital Radio Mondiale (Behrensdort, 2005; Bg, 2010; n.a., 2006c, 2007d).

Australia began testing the DAB standard in 1998 as an offshoot of its exploration into the country’s DTV transition. No formal plan was proposed for the digitalization of radio until 2005, when regulators formally committed to DAB (n.a., 2005c; O’Neill, 2010a: 146; Stimson, 2004a). However, within a year they were rewriting their proposal to accommodate the DAB+ variant, and the first multiplexes were on the air by 2009. To entice incumbent broadcasters into the digital sphere, a six-year ‘grace period’ was written into law that disallowed new digital programming entrants (n.a., 2007c). DAB+ service is restricted to Australia’s largest cities; the country is simply too large to put up the number of multiplexes required to cover the entire continent. Australian regulators are therefore considering other technologies, such as Digital Radio Mondiale (DRM), to bring digital radio to non-urban areas, though the DAB and DRM systems are incompatible. There is no timeframe on when this may occur (O’Neill, 2010a: 149).

In Asia, South Korea waited for developments in the Eureka suite to shake out and chose the DMB standard as its digital broadcast future. However, the Korean DMB system uses an audio encoding algorithm that is incompatible with its European cousin (Lee, 2006). ‘Trial services’ of Eureka 147 technology have taken place in China, India, Indonesia, Taiwan, and Vietnam, but none have progressed toward organized proliferation (O’Neill, 2010a: 137). Singapore shut down its DAB network in 2011: the country’s multiplex operator cited the strong growth of radio listenership via the internet and mobile telephony as precipitating its decision (Siew, 2011).

The only country that seems to have designed a ‘successful’ digital audio broadcast service is Japan, which developed its own Integrated Services Digital Broadcasting (ISDB) protocol. It provides interactive audio, video, image, and text support across a wide range of devices, including radio and television receivers, portable media devices, and mobile telephones (Maxson, 2007: 23). Ala-Fossi believes what sets Japan apart from the rest of the world is that the country pursued network convergence, or the design of a digital broadcast infrastructure to accommodate a variety of content and devices, while regulators elsewhere fixated on network digitalization, or the development of separate digital infrastructures for legacy analogue media systems (Ala-Fossi, 2010a: 46–47). Surprisingly, the Japanese have no plans to terminate analogue radio broadcast services as a part of the ISDB implementation process.

In North America, Canada formally endorsed the DAB system in 1995 (Careless, 1995a; O’Neill, 2010a: 137–138) and organized DAB testing began immediately (Meadows, 1995). As Canadian regulators solicited British-style multiplex licensees, commercial broadcasters began preparing to join in the provision of DAB service (Careless, 1995b). However, as the investment costs of the digital transmission infrastructure became better understood, commercial interest in DAB cooled. Some broadcasters began to openly question whether promises of increased audio fidelity would be enough to sell the technology to a disinterested public (Careless, 1996a). DAB receivers were expected to hit the Canadian market in ‘mid to late 1997’ (Careless, 1996c), and that year the CBC and many commercial broadcasters announced the launch of DAB multiplexes in Canada’s largest metropolitan areas. Auto manufacturers appeared to give the platform a boost when General Motors of Canada announced that it would factory-install DAB receivers in its vehicle fleet (Careless, 1996d, 2002; O’Neill, 2007: 77). By 2002, there were 57 DAB stations on the air, reaching 35% of the Canadian population (O’Neill, 2010a: 140). However, receivers remained scarce and expensive (Careless, 1998; Pizzi, 2004a). In 2004, General Motors of Canada, citing ‘difficulties … over supply of equipment,’ rescinded its commitment to include DAB receivers as standard equipment.

Listener reaction to DAB in Canada was underwhelming. Complaints circulated that the service’s fidelity was not as good as advertised, and digital signals were not as robust as their analogue counterparts. Ultimately, commercial broadcasters used the technology to simulcast their analogue signals (O’Neill, 2010a: 140–141). In 2005, The Canadian Association of Broadcasters argued that it was ‘simply not realistic’ to assume that DAB would ultimately replace analogue radio service (O’Neill, 2007: 86). The following year, 11 multiplexes went silent; those that remained reached a potential audience of just 11 million listeners, and radio audience measurement services stopped trying to quantify DAB listenership (Careless, 2006b; O’Neill, 2007: 77–80; O’Neill, 2010a: 140).

Canadian regulators ordered a complete reassessment of their digital radio transition plan in 2006 and opened up the field to Eureka alternatives (O’Neill, 2007: 85). This resulted in a brief affair with HD Radio. After a year of testing by public and commercial broadcasters (Stacey, 2007; Stimson, 2007a), the CBC and Radio Canada concluded that they would ‘make no further investments in [HD Radio] until the interest of other Canadian broadcasters is gauged and while it monitors the rollout of data services and applications in the United States’ (Stimson, 2007a). Widespread broadcaster interest in HD Radio never materialized: station owners appeared to be more concerned about HD-related digital-to-analogue interference from US stations than they were about adopting the technology themselves (Vernon, 2009).

By 2010, Canada’s digital radio transition had effectively disintegrated. Declaring DAB to be ‘in limbo’ and ‘in peril,’ the CBC shuttered four DAB channels in Montreal. This was interpreted as part of an industry-wide move away from the platform (Careless, 2010b; Stimson, 2010b). That same month, the Canadian Association of Broadcasters disbanded (Careless, 2010a). Suddenly there was no coherent broadcast constituency left to advance the cause of digital radio in Canada. Regulators have since proposed reallocating DAB spectrum for fixed and mobile wireless devices; ultimately they would like to see broadcasters develop a digital platform that complements existing analogue broadcasting services, but the broadcast community is wholly unprepared to assume such a task (Goddard, 2010a: 214–215; O’Neill, 2010a: 143–145).

HD Radio: Monetization over functionality

Radio’s digital transition in the USA involves a homegrown digital radio protocol: HD Radio. It, too, has suffered from underwhelming performance, a lack of proactive regulatory engagement regarding its promulgation, and adoptive reticence by broadcasters, consumer electronics manufacturers, and listeners. Although HD Radio appears to those outside the USA to have achieved some level of sustainability, the domestic reality is quite different.

In 1991, after evaluating Eureka 147 DAB technology, the National Association of Broadcasters – a trade organization representing a majority of the nation’s commercial and public radio stations – endorsed the domestic adoption of DAB. However, the spectrum on which the technology worked at the time was reserved for use by the US military. To avoid a confrontation with the Pentagon, and unwilling to undertake the effort of lobbying for new spectrum on which to launch a wholly new digital radio service, broadcasters subsequently rescinded their commitment to DAB and began designing a system to operate in the existing AM and FM bands (Ala-Fossi and Satvitsky, 2003: 69; Pohlmann, 2005: 646–647; Robertiello, 1991a, 1991b, 1991c).

By 1998, two companies had tendered proposals for such a system to the Federal Communications Commission (Anderson, 2011a: 40–55), and in 2000 the developers merged to form iBiquity Digital Corporation. It enjoyed the fiscal backing of the nation’s largest broadcast conglomerates and intellectual support from National Public Radio (Janssen, 2000; Stimson, 2000a). Constrained within the existing broadcast bands, HD Radio represents a compromise of interests among broadcast incumbents in the USA. iBiquity’s system is essentially designed to be a blocking mechanism to new competition within the digital radio broadcast space. In doing so, it cedes any meaningful promise of making qualitative improvements to the medium of radio broadcasting itself.

HD Radio suffers from three fundamental design problems that significantly limit its usefulness. The first detriment relates to the compromise necessary with operation in the existing analogue broadcast bands. Stations that broadcast in HD actually transmit a hybrid signal, in which digital sidebands are added on each side of the extant analogue transmission. However, because of the FCC’s channel-separation rules, the digital sidebands must be broadcast at a power level that ranges from just 1% to 10% of the analogue signal (Anderson, 2006: 7–8). This results in signal range and penetration difficulties; in the event that an HD signal is interfered with, the system is designed so that compatible receivers will ‘blend’ back to analogue reception (Anderson, 2011a: 77–79). In this regard, HD Radio relies upon the incumbent analogue broadcast infrastructure as a backstop for when its system fails, which occurs with alarming regularity on FM (especially in moving vehicles) and AM (at any time when electromagnetic interference, such as thunderstorms, overwhelms the low-powered digital sidebands).

Furthermore, adding digital sidebands to existing analogue radio stations essentially doubles (or, in the case of AM, triples) the amount of bandwidth each station needs to broadcast. Fattening the spectral footprint of US radio stations cannot help but result in the potential for increased interference between them; interference can be digital-to-digital or digital-to-analog in nature. On the FM side, HD-related interference to analogue radio signals manifests itself as white noise or a ‘buzz-saw’ sound, while on AM the interference has been dubbed a ‘bacon frying effect’ (Anderson, 2011a: 81–84). AM-HD interference is especially insidious as night, when high-power stations’ signals can be heard regionally or nationally due to skywave propagation. Under these circumstances, HD-equipped stations in major markets can wipe out the expanded nighttime coverage areas of smaller-market stations that share the frequency. The proposed all-digital variant of HD Radio would replace the analogue signal with additional digital capacity, but would not shrink the spectral footprint of stations from their hybrid broadcast configuration (Anderson, 2011a: 95–99).

HD Radio’s second fundamental detriment relates to the amount of bandwidth afforded the digital sidebands. An FM-HD station can broadcast up to 150 kilobits per second of digital data, while AM stations are restricted to 64 kbps (Behrens, 1999; iBiquity, 2007: 2; Maxson, 2007: 6, 91). In comparison, the first iteration of DAB allowed for nearly twice the maximum bitrate that HD Radio can accommodate. FM-HD stations have a small but adjustable overhead for datacasting, allowing them to broadcast text announcements and still pictures. They can also split the audio portion of their digital signal into multiple program streams, but in doing so they must significantly degrade the bitrate of each stream, which compromises their fidelity (Janssen, 2004). iBiquity has attempted to ameliorate this issue by investing in the development of digital audio encoding algorithms that use perceptual tricks to assemble a full-sounding stream from a veritable pittance of data (Maxson, 2000: 2, 2007: 93; Mock, 2004; Pohlmann, 2005: 315–330, 651). In the developers’ own listening tests, a majority of listeners judged the audio quality of HD Radio to be as good as or worse than FM analogue (Anderson, 2011a: 87–89, 100–101). An AM-HD station can only broadcast a digital version of its analogue signal, with no room for such functionality as datacasting or multicasting.

The final detriment of HD Radio is its wholly proprietary nature. One company, iBiquity Digital Corporation, controls the intellectual property rights to all aspects of the HD system, and it has leveraged this control in Microsoft-style ways that actually discourage broadcaster adoption and innovation (Pizzi, 2002a). Stations that desire to broadcast an HD signal must first pay a one-time licensing fee to iBiquity, typically $10,000 or more. However, if a broadcaster wishes to utilize the extensible features of the system, such as multicasting or datacasting, there are additional fees, some of which are recurring. For example, iBiquity’s licensing terms require FM-HD stations to pay a certain percentage of their revenue from multicasting quarterly, or $1000 per year, whichever is greater (Stimson, 2005a). The company indemnifies itself from any mishaps that may occur to a broadcaster using its technology and reserves the right to revoke a station’s HD functionality at any time. Future upgrades to HD Radio, beyond bug fixes and other core system updates, will also come with a price tag (iBiquity, 2009a). In essence, the gatekeeping function regarding basic access to the airwaves, which has previously been the exclusive purview of the FCC, is bifurcated in the HD space: broadcasters require a public license from the FCC in order to occupy some spectrum, as well as a private license from iBiquity in order to broadcast digitally (Anderson, 2006: 15–16).

Receiver manufacturers, which typically pay a flat per-unit royalty fee for any proprietary technology they include in their products, are required instead to pay a one-time initial fee to iBiquity plus a quarterly percentage of total HD Radio receiver sales; these licensing terms, like those that apply to broadcasters, can be revised or revoked by iBiquity at any time (Anderson, 2011a: 91). Those who wish to develop new applications within the HD Radio feature-suite may only do so with iBiquity’s express permission, and the company reserves the final word over whether such innovations can actually be deployed (iBiquity, 2009c). iBiquity has convoluted the reasonable and non-discriminatory (RAND) terms that typically govern the promulgation of proprietary technologies by witholding publication of critical normative and informative documents which effectively keep the workings of HD Radio firmly inside a ‘black box’ to which the company has the only key (Anderson, 2011a: 91–93; Signorelli, 2003).

Broadcast conglomerates with an equity stake in iBiquity have received waivers or reductions in licensing fees in order to engender the technology’s uptake. Public broadcasters are also eligible for waivers and discounts, thanks to the research-participation of NPR Labs in the technology’s development and taxpayer subsidies secured by the Corporation for Public Broadcasting (iBiquity, 2009b). Unfortunately, while iBiquity’s broadcast-investors may control the majority of radio industry revenues in the USA, they do not control the majority of radio stations, and the proprietary nature of the technology – when viewed in conjunction with HD Radio’s previously identified detriments – has soured its potential in the minds of many broadcasters. They question the likelihood of any return on investment from an HD ‘upgrade’ to their stations (Pizzi, 2009a, 2009b, 2009c; Stimson, 2002a).

The USA’s decision to adopt a digital radio broadcast technology with such handicaps highlights the degree to which neoliberal principles have captured the country’s communications policymaking process. Over the last 20 years, the FCC has shed its capability to engage in empirical and independent analysis of new media technologies in favor of making policy based nearly entirely on market principles (Anderson, 2011a: 4–12, 342–346). At its most basic level, the FCC weighed the relative political and economic weight of the constituencies involved in its HD Radio rulemaking and made its decision based on those with the loudest voice in that context. Despite the fact that independent broadcasters, electronics manufacturers, consulting engineers, and the public expressed nearly unanimous opposition to the adoption of HD Radio, the system’s support by an impressive coalition of the nation’s largest public and private broadcasters was all the evidence regulators needed to heartily sign off on HD’s proliferation (Anderson, 2011a: 110–148). In doing so, the FCC also dismissed any consideration of alternative digital radio systems.

Former FCC Commissioner Jonathan Adelstein (2007) calls policy decisions that ignore (or even contradict) basic scientific principles in favor of neoliberal underpinnings ‘faith-based regulation’. Commissioner Michael Copps, who is better known as the most democratically-grounded US media regulator to come along in more than a decade, inadvertently exemplified this paradigm when he remarked, after voting in 2002 to approve HD Radio, that ‘a few questions remain to be settled, including how the IBOC system will function in the real world’ (emphasis added), though he praised the technology as ‘a splendid example, I think, of private sector partnering’ (Copps, 2002). Given the system’s proprietary nature, however, the FCC did not require stations to adopt HD Radio and declined to set a deadline on an analogue/digital radio transition. Regulators declared that marketplace forces would ultimately determine the system’s success or failure (Anderson, 2011a: 204).

Marketplace forces do not appear to be doing HD Radio much good. A decade on from the FCC’s approval, less than 20% of all US radio stations have adopted the technology (n.a., 2011c). Many initial adopters of AM-HD Radio have since discontinued its use, principally because of the destructive skywave interference it causes (Limas-Villers, 2010; McLarnon, 2012; Stimson, 2010e; Stine, 2010). FM broadcasters have also experienced HD-related interference that can harm their analogue and digital signals (Beezley, 2010; Hershberger, 2010a, 2010b), but the FCC is wholly uninterested in rectifying these problems (Anderson, 2010a; McLane, 2010; n.a., 2010c; Stimson, 2010a, 2010c, 2010d; Wagoner, 2010).

FM-HD broadcasters have settled on multicasting as the system’s ‘killer application’, but the last decade and a half of industry consolidation has decimated the industry’s capacity to design and implement compelling new programming. Most digital-only FM channels are derivatives of existing radio formats and heavily dependent on automation and syndication to function properly (Anderson, 2009b). Some broadcast conglomerates import out-of-market analogue programming and rebroadcast it as a digital multicast ‘format’ elsewhere (McLane, 2009). Others are constructing or purchasing low-power analogue FM ‘translator’ stations to relay FM-HD multicast streams, hoping to recoup some of their digital broadcast investments by marketing them as entirely new stand-alone analogue radio stations (Anderson, 2010b, 2011b). iBiquity Digital Corporation and its proponents have petitioned the FCC multiple times to tweak the system in hopes of improving its reception characteristics, audio fidelity, and added functionality. Although regulators have signed off on every proposal, none of these efforts seem to be working, because they fail to directly address the technology’s fundamental detriments (Anderson, 2011a: 244–271).

HD Radio’s profile among radio listeners is nearly nonexistent. Although a majority of the U.S. population can theoretically receive at least one HD signal, receiver penetration and listener awareness statistics suggest the technology still lacks a strong foothold. In 2011, iBiquity Digital Corporation reported that 5 million HD-capable radio receivers had been sold in the last 10 years, making for a 0.7% penetration rate among the country’s installed base of 700 million analogue radios (Stimson, 2011). Consumer electronics manufacturers have produced just a handful of tabletop HD receivers and only one portable model. Auto manufacturers initially elected to introduce HD Radio only in select high-end models of their vehicle fleets. Wider adoption is likely, but will be spurred more by an industry wide redesign of in-vehicle ‘infotainment’ systems than by the innate merits of HD technology itself. These new systems have introduced internet connectivity into the car, providing a vector for streaming audio to compete with traditional broadcasting (Anderson, 2011a: 276–277). The listenership of streaming services is growing dramatically, while listener awareness and interest in HD Radio has actually declined over the last four years (Lasar, 2010; Webster, 2010). Although two-thirds of the US radio-listening public have at least heard of HD Radio, less than half of those who know it exists desire to learn more about it, much less invest in a compatible receiver (Anderson, 2011a: 272–273; Kassof, 2012).

Ten years into HD Radio’s proliferation, the future of the technology remains quite uncertain. US broadcasters, generally speaking, now view HD Radio as something that preserves their place of primacy on the AM and FM radio dials, though the debate over its inherent ability to preserve traditional broadcasting’s place of primacy in an ever-expanding digital media environment is contentiously pessimistic (Anderson, 2011a: 262–268, 279–280). There is no discernible movement toward adoption of the all-digital end-state of HD Radio. The global economic downturn has significantly depressed the value of publicly traded broadcast conglomerates, drying up their liquidity and hindering their ability to make continued investments in HD station infrastructure, programming, and promotion, not to mention further significant investment in iBiquity Digital Corporation (Anderson, 2011a: 273–275). The stringently neoliberal paradigm of the US digital radio transition may very well result in its undoing; for the moment though, no constituency involved in the transition has the political or economic wherewithal to intervene in the status quo.

Elsewhere in the world, HD Radio has found little purchase. In 1995, as Mexican regulators debated the merits of early digital radio technologies, the radio industry was torn between Eureka 147 and HD Radio. Initially, regulators made moves to allocate spectrum for the promulgation of a Eureka-based DAB system (Plata, 1995). However, neither DAB nor HD Radio moved out of the testing stage until 2004 – two years after Mexico’s largest trading partner approved HD Radio’s proliferation. The industry trade publication Radio World reported that ‘a group of engineers from the Mexican equivalent of the NAB’ hoped to recommend a digital radio system to regulators by 2005 (Plata, 2004). In 2007, Mexican regulators allowed stations within 200 miles of the US border to commence broadcasting in HD, though many of these stations are targeted toward US audiences (n.a., 2007b, 2008a).

Mexican regulator Cofitel subsequently received reports of HD-related interference to analogue stations in Mexico and questioned the FCC about HD Radio’s compliance with international spectrum allocation treaties (Plata, 2007; Stimson, 2007b). In 2009, authorities announced a plan to terminate analogue AM radio service; no timetable was given, nor was a technology selected to facilitate this transition (Plata, 2009). By 2010, 10 Mexican FM stations and 11 AM stations were broadcasting in HD, all within the 200-mile buffer zone with the USA (n.a., 2010a). It was estimated that it would cost the Mexican broadcast industry between $280 million and $840 million in capital expenditures alone to adopt HD Radio nationwide (Plata, 2010). Although Cofitel formally adopted the HD standard in February of 2011, the Mexican radio industry does not appear to be willing to invest such sums in a digital transition (n.a., 2011b).

HD Radio itself has no real promise of global adoption. Although iBiquity and the US trade press claim that HD Radio has been tested or gained ‘significant interest’ in dozens of countries, all of them have either frozen their experimentations or selected a different digital audio broadcast standard (Hedges, 2006; iBiquity, 2010; Kellner, 2009; n.a., 2006a, 2008b, 2008c). Along with the USA and Mexico, the Dominican Republic, Panama, the Philippines, and Puerto Rico have formally adopted HD Radio as their digital broadcast technology of choice (Anderson, 2009a; n.a., 2009). All of these countries are firmly situated within the USA’s sphere of international economic influence, and none provide the heft necessary to strengthen HD Radio’s position among competing digital broadcast technologies.

Digital Radio Mondiale: The newest also-ran?

The third and final digital radio broadcasting system, Digital Radio Mondiale (DRM), may be the youngest of available technologies, but unlike DAB and HD Radio, it has yet to find any meaningful interest among regulators, broadcasters, or listeners – let alone any study by media scholars. In March of 1998, representatives of research institutes, equipment manufacturers, and broadcasters from more than 30 countries met in China under the banner of the Digital Radio Mondiale Consortium to develop a digital broadcast standard specifically for the AM and shortwave bands. DRM wholly displaces analogue radio signals from the outset, and the system is based on open source paradigm, eliminating any proprietary impediments to innovation and proliferation (Clark, 1998; Senger, 1998). By 2001, a mobile DRM receiver was demonstrated at Germany’s largest consumer electronics show; in 2002, the International Telecommunications Union endorsed DRM for use on the AM and shortwave bands, and the DRM Consortium expected the mass production of DRM receivers to begin shortly thereafter (Stimson, 2001, 2002c, 2002d, 2003a, 2003b).

The BBC, Voice of America, Deutsche Welle, DeutschlandRadio, Radio Canada International, Radio Netherlands, and Swedish Radio launched DRM shortwave broadcasts in 2003, targeting all continents on the planet except Antarctica (n.a., 2003a). Regulators in several countries saw the initial potential of DRM as a ‘drop-in replacement for existing … allocations’, and also thought it might be useful for jump-starting stalled or stuttering DAB system development by heightening consumer interest in digital radio more generally (Hallett, 2003b). Between 2005 and 2008, more than 50 AM and shortwave broadcasters around the world adopted DRM technology, producing more than 350 program-hours per day in the digital mode, and several countries began test programs to evaluate the possibilities of widespread DRM deployment (Careless, 2004; Carera, 2008; Cohen, 2005; Hallett, 2005b; Mansergh, 2004; n.a., 2005a, 2005b, 2007a, 2008f; Stimson, 2004b, 2004c, 2005b). H Donald Messer, director of the Spectrum Management Division of the US International Broadcasting Bureau, resigned his post in 2005 to work full-time with the DRM Consortium (Stimson, 2005c; White, 2007). That same year, the Consortium announced plans to develop an FM variant, known as DRM+ (Hallett, 2005a), which was subsequently certified for global deployment in 2007 (Mansergh, 2006, 2007).

While DRM offers a perceptible increase in audio fidelity over analogue radio broadcasts and allows multicasting on every band, the disruptive nature of entirely replacing incumbent analogue signals is holding back DRM’s unqualified endorsement by any broadcaster or state regulator (Ala-Fossi, 2010b: 50). The technology’s uptake is similarly stymied by a lack of receivers: for example, Sony Corp., a member of the DRM Consortium, has declined to actually manufacture DRM-compatible gear (Dumiak, 2006). The only broadcasters demonstrating any realistic interest in DRM are those in the shortwave bands, where it is the only digital broadcast option they have. US shortwave broadcasters are organizing to petition the government to end the prohibition on domestic shortwave service so that Americans might fully enjoy the benefits of DRM (DRMNA, 2010). But even if DRM should come to dominate shortwave broadcasting, that mode alone does not carry enough political or economic momentum to change the confused trajectory of analogue broadcasting’s digitalization as a whole.

Conclusion

Radio broadcasting’s digital dilemma is quite real. Of the three extant digital radio technologies that exist for terrestrial radio broadcasters and listeners, none have demonstrated any semblance of long-term viability, despite the billions of dollars that have been pumped into their development and proliferation. The reasons are manifold: DAB, HD Radio and DRM do not provide meaningful qualitative improvements to the medium beyond those services already provided by analogue infrastructures; broadcasters and listeners have little incentive to invest in a digital version of the status quo just because digitalization is heralded as an inevitable future end-state; and regulators allowed the proponents of digital radio technologies to effectively ignore advances in the development of the internet and mobile telephony, some of which have appropriated the transformative aspects of the convergence phenomenon to engender new forms of ‘radio’ that now challenge legacy broadcasters’ place of primacy within the medium’s popular construction (Ala-Fossi, 2010b: 47).

Many still hold out hope that radio broadcasting will find its own unique path into our increasingly digital media environment. This is not a view held by broadcasters or listeners: both of these important constituencies now seem to believe that radio’s future will somewhat uncomfortably straddle both the analogue and digital worlds, with over-the-air distribution remaining firmly in the former for the foreseeable future. Without firm consensus from all affected parties on radio’s digital transition, this situation is bound to persist. However, as convergence-inspired forms of ‘radio’ continue to encroach on territories that have historically been defined as the exclusive purview of terrestrial broadcasters, this digital dilemma will only intensify.

This unsettling trajectory should be of concern to media scholars. From a policy perspective, radio’s digital transition represents an important parable about how certain political and economic priorities and actors have come to be relied upon in dangerous ways that seek to preserve the status quo at the expense of a medium’s technological and functional evolution. From the context of broadcast studies, the very nature of what constitutes ‘radio’ in a digital media environment is now an open question for debate. Although these aspects remain woefully underexplored, it is hoped that this examination of digital radio’s state of play inspires further research into these quandaries, with an eye toward critically and constructively addressing them – not just for the sake of radio itself, but also for a better understanding of the nature of the convergence phenomenon and its implications for the ongoing transformation of all legacy media systems.