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

  1. #271
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    Quote Originally Posted by gyro
    Thanks Racemier, now everything is much clearer. And the radio gets muted if there is a sinal on phone or GPS I suppose...
    Thats the idea, even if the PC is not running.
    Professionals built the Titanic, an amateur built the Ark.

  2. #272
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    Quote Originally Posted by racemier
    As far as I know TMC is send with RDS together. You need to decode it and have a memory to store the messages and the tuner needs to stay on to be able to keep receiving and saving the TMC messages.

    Correct me if I'm wrong.

    Regards,
    You are correct, BUT, the main problem beeing that not all radio stations include TMC data in their RDS information.

    For example, here in Sweden you might have 20 (or so) different radio stations where I live, but only two of them (both of them public service, none of them anything I listen to normally) transmit TMC data.

    That's why I assumed I needed two tuners/recievers, one for what I actually want to listen to and one dialed in to the TMC transmiting station(s).

    /M

  3. #273
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    Quote Originally Posted by Maximus
    You are correct, BUT, the main problem beeing that not all radio stations include TMC data in their RDS information.

    For example, here in Sweden you might have 20 (or so) different radio stations where I live, but only two of them (both of them public service, none of them anything I listen to normally) transmit TMC data.

    That's why I assumed I needed two tuners/recievers, one for what I actually want to listen to and one dialed in to the TMC transmiting station(s).

    /M
    You could do it with two tuners but I think it's quite expensive and I don't know if that is done, they do it for digita radio but for TMC?
    Funny next week I leave for Göteborg.
    Professionals built the Titanic, an amateur built the Ark.

  4. #274
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    Tmc

    the TMC data is decoded in the RDS data Stream - so I think (I have read the TEF datasheet only shortly) it's supporting the complete RDS Stream (included TMC).
    "Professional" Navigation systems have a second tuner for that so that you can listen to station without TMC.

    TMC IMHO is not nescessary for this project... - What do you want to do with the TMC data ? You will give this TMC data to your navisystem (Map and Guide, Destinator3, ... in "GNS" TMC protocoll) !!??
    You have to merge the undecoded TMC stream into the NMEA stream from your GPS mouse (this is the GNS2.0 protocoll for TMC). So you better buy a GPS mouse with TMC support (this gives you also the benefit that you can listen to ANY station with racemiers tuner) !
    http://www.gns-gmbh.com

  5. #275
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    Quote Originally Posted by FMode
    TMC IMHO is not nescessary for this project... - What do you want to do with the TMC data ? You will give this TMC data to your navisystem (Map and Guide, Destinator3, ... in "GNS" TMC protocoll) !!??
    I don't think it ever was a requirement, but in time when everything else is taken care of it would be a nice feature.
    Most frontend developers will have built in support for this unit, they also have their own navigation program (based on D3) or embedd one or the other
    and then TMC will come in handy since everyone won't have to go out and buy a new GPS mouse, especially for all of us who want to use a OEM GPS reciever, since none of them have TMC support.


    /M

  6. #276
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    car fm

    Can't wait, I use radio shark now and i looks nice but suck for reception

  7. #277
    Raw Wave rando's Avatar
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    The engineering model for Design C (CRAM) is assembled and passed power cycling tests. By bit banging two parallel port lines, we were able to communicate with the signal processor and correctly read the expected status words.

  8. #278
    Maximum Bitrate ddogg_777's Avatar
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    Quote Originally Posted by rando
    The engineering model for Design C is assembled and passed power cycling tests. By bit banging two parallel port lines, I was able to communicate with the signal processor and correctly read the expected status words.


    I'm glad there are people here that understand each other...ummm...good work, I guess.

  9. #279
    My Village Called 0l33l's Avatar
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    Quote Originally Posted by rando
    The engineering model for Design C is assembled and passed power cycling tests. By bit banging two parallel port lines, I was able to communicate with the signal processor and correctly read the expected status words.
    Glad it works
    Quote Originally Posted by rando
    Corona is hella far for me. If I get the hacked up radio prototype even partially working, then I'll come out to show it off.
    Does this mean I'll see you on Sunday?

  10. #280
    Maximum Bitrate Vchat20's Avatar
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    phew. finally my account is working again.

    anyways, nice work on the project guys. keep it up. cant wait to have one in my grubby little palms.
    Your everyday carpc geek and tech guru at your service. *bow*

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