Astra Digital Radio - definição. O que é Astra Digital Radio. Significado, conceito
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O que (quem) é Astra Digital Radio - definição

DIGITAL RADIO TRANSMISSION SYSTEM

Astra Digital Radio         
<audio> Digital Radio over satellite, compatible with analog television transmissions. Alternatively the normal TV subcarriers can be modulated by a MPEG-1 Layer-2 48 kHz 192 kbps signal. Quality is better than analog carriers and only needs half the bandwidth (analog stereo = 2 carrier, digital stereo = 1 carrier). Quality is limited and the data rate can't be increased. (2001-12-13)
RTÉ Digital Radio Sport         
IRISH RADIO STATION
RTE Digital Radio Sport; RTÉ Digital Radio Sports; RTE Digital Radio Sports
RTÉ Digital Radio Sport was a short-lived Irish radio station broadcasting on DAB only, as part of Raidió Teilifís Éireann (RTÉ)'s digital radio lineup. It played constant rolling sports news in a loop and also carried live sports broadcasts that would generally have been carried on AM services.
Digital audio radio service         
Digital audio radio satellite; Digital Audio Radio Service; SDARS; S-DARS; Digital Satellite Broadcasting Corporation; Satellite Digital Audio Radio Service; Digital Audio Radio Satellite; Satellite digital audio radio service
Digital audio radio service (DARS) refers to any type of digital radio program service. In the United States it is the official FCC term for digital radio services.

Wikipédia

Astra Digital Radio

Astra Digital Radio (ADR) was a system used by SES for digital radio transmissions on the early Astra satellites, using the audio subcarrier frequencies of analogue television channels. It was introduced in 1995. As of February 2008, there were still 51 stations transmitting in this format. ADR ceased on 30 April 2012 when analogue broadcasts on Astra 19.2°E ended.