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Thread: NICAM sound

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  1. #1
    Join Date
    May 2004
    Location
    Victoria
    Posts
    1,239
    That's a nice bit of hardware. Great job!

    I'll link this thread from my website as the source of information for the PAL tuner with NICAM decoding solution discussion area.

    I am assuming that the hook up will be very similar to the old "Mark 1" Australian stereo decoder and if some pictures and info can be sent to me I'll happily update the how-to to incorporate the changes, or I'm happy for someone to use the current how-to and re-write it.

    As for myself I unfortunately can't be in a position of active participation due to Australia not using NICAM so someone in NZ will have to take on the role of answering technical questions.

    While I realise this decoder and a different PIC chip can program it for use in Australia I have enough stock of 3410D Micronas chips to last out the remainder of any future conversions that come my way. Although if Catdog wants to develop an Australian version (or a universal version that can do many standards) then go for your life mate

    Once again, great work. Well done
    Last edited by Darren King; 12-06-2007 at 09:06 PM.
    Darren King
    OzTiVo Repairs and Modifications
    If your TiVo requires repairs or modifications
    then visit: http://kingey1971.wix.com/tivorepairs

    NOW ALSO REPAIRING FETCH TOO!

  2. #2
    Join Date
    Mar 2005
    Location
    Hamilton, NZ
    Posts
    196
    Quote Originally Posted by Darren King View Post
    I am assuming that the hook up will be very similar to the old "Mark 1" Australian stereo decoder and if some pictures and info can be sent to me I'll happily update the how-to to incorporate the changes, or I'm happy for someone to use the current how-to and re-write it.
    Yes, exactly the same although it requires both 12V and 5V.
    Quote Originally Posted by Darren King View Post
    Although if Catdog wants to develop an Australian version (or a universal version that can do many standards) then go for your life mate
    One step ahead of you - it autodetects the sound standard so should work in Australia as is!

  3. #3
    Join Date
    Aug 2005
    Location
    Wellington
    Posts
    36
    I have installed one of these decoders in my Tivo, and can say it works really well. After putting in the pal turner and using the demodulated (mono) sound from the tuner, I thought that the sound was pretty good. Putting in the NICAM decoder and listing to it, the sound is so much better…

    The decoder performs flawlessly. Locking onto the NICAM signal occurs virtually instantly. There is no noise output while changing channels, and the decoder falls back automatically to mono if the station does not broadcast in NICAM.

    Very happy with the decoder.

  4. #4
    Hi. I live in Wellington, and have previously had a PAL tuner installed in my Tivo.
    I'm quite keen on getting Nicam stereo working. What's the easiest way, and what would the costs be?
    Ta.

  5. #5
    Join Date
    Dec 2005
    Location
    Christchurch, New Zealand
    Posts
    463

    NICAM decoder boards

    If Catdog doesn't have any prototype boards left, you may want to wait until I build some 'pretty' NICAM decoder boards.
    It will likely take a couple of months by the time I lay out the PCB, and then slip some PCBs in with a work job for fabrication, then assemble the boards.
    Not sure of costs, have yet to look into component sourcing - NZ$ is high vs US$ which should help.

  6. #6
    Join Date
    Dec 2005
    Location
    Christchurch, New Zealand
    Posts
    463
    I finished assembling some of these boards a couple of weeks ago, just waiting on a friend to write some firmware. Will post a photo and start accepting your money soon.
    The build cost was $24, plus $2 if you want a HDD style power input socket fitted. Postage $2.50.
    They are limited edition 10 units only. 2 already spoken for.

    TiVo Series3 TiVoHD x2

  7. #7
    Join Date
    Mar 2007
    Location
    Auckland, New Zealand
    Posts
    5

    How do I get one?

    Hi all,
    I would like to get my hands on one of these. How do I go about that. My Tivo already has the Pal tuner mod.

    Cheers

  8. #8
    Join Date
    Dec 2005
    Location
    Christchurch, New Zealand
    Posts
    463
    Quote Originally Posted by KEG View Post
    Hi all,
    I would like to get my hands on one of these. How do I go about that. My Tivo already has the Pal tuner mod.

    Cheers
    I'm still part way through designing the PCB for a surface mount version. The one I have is a through-hole prototype built by Catdog. I've been pretty slack and not doen any work on this for ages. I've still got the main decoder chips in the cupboard. I promise I'll get onto it soon...

    TiVo Series3 TiVoHD x2

  9. #9
    Join Date
    Dec 2005
    Location
    Christchurch, New Zealand
    Posts
    463

    Where it's at

    Well here's where the PCB layout is at.. basically finished.
    Any comments welcome, hasn't been sent for fabrication yet so changes can be made.
    Attached Images Attached Images

    TiVo Series3 TiVoHD x2

  10. #10
    Join Date
    Apr 2004
    Location
    Perth, Western Australia
    Posts
    3,038
    I suggest you PM Skolink or catdog.

    Peter.
    Please search this forum and our Website for your TiVo questions before starting a new thread. Thanks!

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