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Thread: Cheap eBay FM Transmitter and MRDS1322 RDS Encoder?

  1. #1
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    Question Cheap eBay FM Transmitter and MRDS1322 RDS Encoder?

    Hello again! I have this really neat cheap $7 FM transmitter I got from eBay and it works amazing! I'd now like to add RDS to it if it is even possible. I've seen Wayne has done it with his transmitter. I am hoping I can too with this. I am using FPP and Vixen 3. I see that TinyRDS is an option in Vixen 3.


    Transmitter I have:
    https://www.ebay.com/itm/DSP-PLL-87-...72.m2749.l2649

    The encoder I want to use:
    https://pira.cz/rds/show.asp?art=micrords_encoder
    Crazy Light Addict.

  2. #2
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    Default Re: Cheap eBay FM Transmitter and MRDS1322 RDS Encoder?

    The transmitter itself has to be able to support RDS. And those $7 transmitters do not have that capability. You would need to buy a new transmitter w/ RDS
    Matt

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    Default Re: Cheap eBay FM Transmitter and MRDS1322 RDS Encoder?

    Quote Originally Posted by Ruppro View Post
    The transmitter itself has to be able to support RDS. And those $7 transmitters do not have that capability. You would need to buy a new transmitter w/ RDS
    What about this:
    https://pira.cz/rds/show.asp?art=minirds_encoder

    "It's not important if you use this RDS encoder with one transistor FM bug or 1 kW transmitter."

    I am confused about what this is then. If a radio has RDS what's an encoder do?
    Crazy Light Addict.

  4. #4
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    Default Re: Cheap eBay FM Transmitter and MRDS1322 RDS Encoder?

    Also, what are the TX, RX, and GND pins for on the eBay transmitter? What can I connect to that?

    1d734fbe-52ae-40fc-ae1c-fc299338f9a5.jpg
    Crazy Light Addict.

  5. #5
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    Default Re: Cheap eBay FM Transmitter and MRDS1322 RDS Encoder?

    Quote Originally Posted by Spankyty View Post
    Also, what are the TX, RX, and GND pins for on the eBay transmitter? What can I connect to that?

    1d734fbe-52ae-40fc-ae1c-fc299338f9a5.jpg

    Why not contact the eBay seller and ask? Or look for other similar products and see if those sellers have documentation.

    http://digwdf.com/store/
    The DIGWDF Store is closed for all sales. Thanks to everyone who supported us through the years!
    User guides, documentation and other files are still free and available for downloading.

  6. #6
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    Default Re: Cheap eBay FM Transmitter and MRDS1322 RDS Encoder?

    The SI4713 things work "OK" for both transmitter and RDS:

    https://www.amazon.com/Adafruit-Ster.../dp/B00SK8ME4Y

    Little more expensive than the $7 transmitter, but it does support RDS and there are actually two different FPP plugins that work with it.
    Dan Kulp

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    Default Re: Cheap eBay FM Transmitter and MRDS1322 RDS Encoder?

    Quote Originally Posted by Spankyty View Post
    Also, what are the TX, RX, and GND pins for on the eBay transmitter? What can I connect to that?

    1d734fbe-52ae-40fc-ae1c-fc299338f9a5.jpg
    I have the same FM transmitter. You connect a wire to the Ant spot only, and the wire length is based on the frequency that you will be transmitting. 75cm is a default length.

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    Default Re: Cheap eBay FM Transmitter and MRDS1322 RDS Encoder?

    Thanks, guys for the help! :D
    Crazy Light Addict.

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    Default Re: Cheap eBay FM Transmitter and MRDS1322 RDS Encoder?

    The tx and rx pins are for the serial interface. The description mentions
    7: supports serial command control
    and that would be the way to send the serial commands

  10. #10
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    Default Re: Cheap eBay FM Transmitter and MRDS1322 RDS Encoder?

    Quote Originally Posted by MikeKrebs View Post
    The tx and rx pins are for the serial interface. The description mentions
    7: supports serial command control
    and that would be the way to send the serial commands
    So I can send it RDS with TinyRDS???
    Crazy Light Addict.

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