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  • Raspberry PI as FM transmitter

    From amitla@amitla@dimension.sh (Amitla) to tilde.radiofreqs on Wed Mar 1 22:42:23 2023
    Good news. Raspberry PI can be easily converted into FM transmitter.
    Here is an instruction. https://www.section.io/engineering-education/broadcasting-a-pirate-fm-radio-station-using-a-raspberry-pi

    Please use the latest repository from here:
    git clone https://github.com/markondej/fm_transmitter

    It works! But... but... Per US Federal law the distance of your transmission without license must be not more than 200 feet. Not sure about other
    countries.
    In fact you will have about 600 feet with the optimal antenna (2.5 feet wire) To reduce your trasmission power, just make your antenna 1 foot long and
    harass you neighbours with you favorite hip-hop compositions.


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  • From Ton Machielsen@tonm@tilde.club to tilde.radiofreqs on Wed Aug 16 08:58:11 2023
    On 2023-03-01, Amitla <amitla@dimension.sh> wrote:
    Good news. Raspberry PI can be easily converted into FM transmitter.
    Here is an instruction.
    https://www.....spberry-pi

    Please use the latest repository from here:
    git clone https://github.com/markondej/fm_transmitter

    It works! But... but... Per US Federal law the distance of your transmission without license must be not more than 200 feet. Not sure about other countries.

    Well, there is a lot more you are not allowed to do. For example send dirty block signals instead of clean sine waves.
    Yes, you can let the Pi send a electric signal into an antenna at high frequency, but that doesn't make it a decent radio signal.
    It's basically noise you are trying to control.

    In fact you will have about 600 feet with the optimal antenna (2.5 feet wire) To reduce your trasmission power, just make your antenna 1 foot long and harass you neighbours with you favorite hip-hop compositions.

    I want to hear the fist hip-hop over the noise. ;-) And shortening the antenna below the resonant frequency does indeed reduce
    the putput of the antenna. Be aware that everything that doesn't get out of the antenna needs to go somewhere. Most likely back into the Pi.
    Perfect way to destroy your Pi's GPIO ports.

    TL;DR, no, don't do this.
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