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Thread: HU Quality AM/FM RDS/RBDS Radio with Features

  1. #351
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    Here is a pic of the radio text displaying one of the best rock bands that ever existed, Alice in Chains.

    I connected my roof antenna to it and I get really good reception. The antenna has twin lead 300 ohm cables, with a 300 to 75 ohm matching transformer connected to the twinlead cable, and some coax comming from it running down my house. It's connected to the design kit PCB with an F to BNC, BNC to SMB adapters. I know the antenna line is 75 ohm, and the antenna input is 50 ohm, but the mismatch doesn't really affect the reception too bad.

    The TDA7403 is the audio processor that's looking the best to me. It has the features I need, like an MPX decoder with minimal components, and a stereo cassette input I can use for AM stereo input. Just add the RDS decoder of your choice and you are good to go.

  2. #352
    Newbie scaccess's Avatar
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    Am????

    Guys I can't wait till this is finished, but I have a suggestion. NO-ONE in europe gives a s**t about AM. DAB is out there now and it's the latest thing to have all the big manufacturers going that way with OEM and aftermarket units. How about this unit as it is with FM and RDS for europe/uk. With the income from this just on this forum you could finance the rest of the AM side for the states at your leisure!

  3. #353
    Jesus Freak antimatter's Avatar
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    Quote Originally Posted by scaccess
    Guys I can't wait till this is finished, but I have a suggestion. NO-ONE in europe gives a s**t about AM. DAB is out there now and it's the latest thing to have all the big manufacturers going that way with OEM and aftermarket units. How about this unit as it is with FM and RDS for europe/uk. With the income from this just on this forum you could finance the rest of the AM side for the states at your leisure!
    hahaha
    nice try
    -Jesus- King of Kings Lord of Lords

  4. #354
    Raw Wave rando's Avatar
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    Quote Originally Posted by scaccess
    Guys I can't wait till this is finished, but I have a suggestion. NO-ONE in europe gives a s**t about AM. DAB is out there now and it's the latest thing to have all the big manufacturers going that way with OEM and aftermarket units. How about this unit as it is with FM and RDS for europe/uk. With the income from this just on this forum you could finance the rest of the AM side for the states at your leisure!
    What leads you to believe that removing AM make things any easier? Did you look at the architecture of any of the proposed solutions?

  5. #355
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    Quote Originally Posted by scaccess
    Guys NO-ONE in europe gives a s**t about AM. DAB is out there now and it's the latest thing to have all the big manufacturers going that way with OEM and aftermarket units. How about this unit as it is with FM and RDS for europe/uk. With the income from this just on this forum you could finance the rest of the AM side for the states at your leisure!
    What? If no one gave a ***** about AM in Europe then stations would be off the air. The tuner module has an AM_AF pin, do you want us to remove it? In the states and the rest of the world, AM stereo is the leading technology in AM transmission. In the states, Motorola was the favorite of the FCC, so most if not all stations that broadcast in AM stereo use the Motorola C-QUAM system. I'm in the states and *I* listen to AM, particularly AM stereo of my local oldies station.

    In the US, we have NOAA Weatherband on the FM band (around 162MHz) and we seem to use a mix of RDS and RBDS on the FM broadcast band. I have the Worldwide version of this tuner, and it can tune US, Jap, and Eur AM and FM bands with RDS/RBDS. An AM stereo decoder will have to be added, but I want my receiver to take advantage of every radio service that the tuner module can tune.

    In the US, your "DAB" is our "HD Radio". At this point in time, very few stations broadcast HD Radio. It's pretty much condensed to the major cities. Don't confuse this with satellite radio, because thats a pay service. Analog radio still has a lot to offer, especially AM stereo and FM stereo. Damn good sound quality, atleast in my area. When I need to know the weather I listen to WX and when I need to know traffic conditions I listen to the traffic station that my state DOT broadcasts.

    If you think we are farting around with adding AM capbility which is slowing things down, buy a few of the $50 tuner modules and attempt to design your own if you think you can do better.

  6. #356
    Maximum Bitrate Bravellir's Avatar
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    Quote Originally Posted by scaccess
    ... NO-ONE in europe gives a s**t about AM. ...
    At least in Portugal I can confirm this. I don't recall ever switching to AM.
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  7. #357
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    Quote Originally Posted by Bravellir
    At least in Portugal I can confirm this. I don't recall ever switching to AM.
    In Belgium is it just the same.
    But indeed a DAB tuner would be nice if that is possible to build in. No need for a TV cart than.

  8. #358
    Maximum Bitrate Seth's Avatar
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    Anyone interested to add DAB can do it utilizing the I2C AUX I/O port available with a module like this :http://www.roke.co.uk/download/datas...oldcard_II.pdf

    The system design is open so be creative...

  9. #359
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    yup, i have never used AM to my knowledge, there aren't any decent station on the AM band in denmark that i know of, and not any Stereo AM channels at all.
    Transflective Lilliput 8", LV-677DC Core Duo 1,83Ghz, , Mpegbox uSDC20D, Shuttle Express, HQCT, PG XS6600 http://carpc.boyakasha.dk

  10. #360
    Maximum Bitrate Change's Avatar
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    I live near a nuclear power plant. The emergency broadcast system is an AM station. If the plant blows, I want to be able to hear about what's going on and how fast I should run

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