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| DAB
("original flavour") |
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| DAB+ |
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| Radio Numérique Terrestre - DMB-Radio |
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| DMB TV |
Latest
On the Hong Kong ensemble DAB+ by DBC, 22URadio is broadcasting in DAB+ at 64 kbit/s.
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Ensemble Label
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3 Stereo |
 3 Stereo | 4 Joint
Stereo | 3 Joint
St. LSF | 3 Mono | 3 Mono
LSF | 3 Dual
Channel | 3 Packet
Data | 3 Stream
Data | 3 Stereo
AAC + | 3 Mono
AAC + | | | IV | TII |
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DAB+ transmissions are taking place in Hong Kong. Digital Broadcasting Corporation (formerly Wave Media) has been conducting test transmissions on Block 11D. These have now migrated to Block 11C.
The number of services broadcast is expected to increase to 18 by the end of February 2012.
Hong Kong's terrain is mountainous and difficult to cover completely. The existing FM network requires 7 sites, each with its own frequency, for each of the 7 FM services. 49 frequencies. DAB's single frequency network offers an obvious long-term saving, both in spectrum and in hardware and energy consumption. DBC aims to achieve 95% coverage of the SAR as a whole, the remainder being on outlying islands. Negotiations are reported to be underway with mainland authorities to co-ordinate an increase of transmission power to ensure good indoor reception in the areas covered.
The government has mandated that DAB+ will be used, enabling both commercial radio services, and those of RTHK to be carried on a single multiplex. The government is to set minimum criteria for bitrates - 32 kbit/s for speech services, and 48 kbit/s for music, but will allow the service providers some flexibility in how they use their capacity, which will be allocated as a block.
It is understood that the Band III ensemble in Guandong province on the mainland is sometimes receivable in the west of the territory. This was not achieved when attempted February 2002. There are T-DMB transmissions in Shenzhen, that Wohnort has been able to receive in the areas of the New Territories closest to the border, such as Sheung Shui.
A DAB+ radio is definitely required in order to receive digital radio in Hong Kong. Only a T-DMB receiver will be able to receive the programmes from Shenzhen.
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The Office of the Telecommunications Authority has allocated by auction the UHF frequency (Ch 47) for broadcast mobile TV. From three bidders, the licence will be issued to the winning applicant, China Mobile Hong Kong Corporation Limited. Wohnort expects the Chinese system known as DMB-TH (not a member of the DAB - Eureka 147 family) will be used. A number of HK sites have been co-ordinated with the Mainland to use this frequency. The other bidders were:-
City Telecom (H.K.) Limited
Hong Kong Telecommunications (HKT) Limited
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