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2:13pm NZDT 
Wed, 10 Mar 2010 

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Digital Radio Technologies

Hello!

This website started life as an easy to find link to my web pages about DRM™ digital shortwave radio reception in New Zealand.

With the start of DAB trial broadcasts here in New Zealand it has been expanded to cover that form of digital broadcasting.

I hope you find it interesting.

Revo Blik RadioStation

The current Kordia DAB pilot multiplex contains two streams of Radio New Zealand's RNZ Concert service, one a 192 kbps MP2 (DAB) stream, the other a 64 kbps AAC+ (DAB+) stream.

Here are examples of both streams, recorded off the Blik RadioStation, and encoded using FLAC lossless encoding:

Some longer recordings are available via ed2k file sharing:

  • DAB test transmissions have started in Auckland & Wellington, New Zealand. These are being carried out by Kordia (formerly BCL). Initial tests are using MPEG-1 Audio Layer II (MP2) encoding, but the final roll-out is planned to use AAC+. The MED SpectrumOnline website indicates that the Wellington test is on 192.352 MHz (NZ DAB block 6C), with 23.0 dBW power in the Wellington CBD. It indicates that the Auckland trial is on 227.36 MHz (NZ DAB block 11C), with 27.0 dBW power from a transmitter in Waiatarua (Waitakere area, West Auckland). My own receiver indicates that the Wellington pilot is on block 7C rather than 6C due to NZ's different numbering scheme.

    After some initial teething troubles I can now get very good reception from my Lambton Quay office (subject to being away from the general noise of PCs etc). Here are some samples, recorded during April 2007. These files are straight off the SDRAM recorder card in the Morphy Richards so are at the same bit rate as the DAB audio stream. You will need a broadband connection to listen without rebuffering.

  • The Morphy Richards DAB/DRM/LW/MW/SW DigitalRadio 27024 receiver is now available from various sources in Europe. This multi-standard consumer level radio also features an SD recording card. I wrote a review of this radio for the April 2007 issue of the New Zealand DX Times magazine.

    Links:

    I welcome any corrections and additional relevant links.

    Chris Mackerell - chris@digitalradio.co.nz


  • In This Section 

    DRM Reception in NZ 
    DRM Schedule 
    RNZI DRM 
    RNZI DRM Recordings 

    Other Links 

    Dgital Radio Australia 
    Digital Radio DR 
    RNZI 
    VT Merlin 
    ABU DRM Page 
    DW DRM Schedules 
    IBC paper on DRM 
    HamDream 
    DRM in Germany 
    HFCC Projects Page 
    US C.E. DRM Site 
    DRM Forums 
    digitalradiotech.co.uk 
    Radio Numérique Bretagne 
    Revo 




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