TELL ME

  • @[email protected]
    link
    fedilink
    489 months ago

    Meshtastic long range radio systems. Off grid, user created, low bit rate but stupid long range.

    • @[email protected]
      link
      fedilink
      English
      149 months ago

      Sweet I’m pretty inexperienced with radio stuff but I’ve been meaning to look into that for a while. Time to hop down the rabbit hole!

      • @[email protected]
        link
        fedilink
        99 months ago

        It’s just the right amount of DIY to be engaging and so cheap to get into. Plus the discord community is really active.

      • ditty
        link
        fedilink
        59 months ago

        This is the first time I’ve heard about this; seems so cool! Any ideas which radios I should be looking at?

        • @root
          link
          59 months ago

          Get on the notification list for a RAK starter kit. I have heltec and RAK, and the NRF chip outperforms the ESP32 based ones by leaps. Barely uses any battery. Just check which frequency you need for your country. I’m in NA so we use 915 MHz

          Link

          • nickwitha_k (he/him)
            link
            fedilink
            59 months ago

            IIRC, some hardware can be switched into a HAM mode, letting it transmit at higher wattage, at the cost of zero encryption for legal compliance.

    • @higante
      link
      English
      49 months ago

      I placed my order for some radios to play with 3 days ago. Im unreasonably excited for them to arrive.

        • @higante
          link
          English
          29 months ago

          It doesn’t help that i orderd it on the 2nd day of Chinese new year, so i wont see any action for at least a week.

    • bach37strad
      link
      39 months ago

      That’s fascinating. I just picked up my first 10M radio, can you elaborate a bit?

      • @[email protected]
        link
        fedilink
        39 months ago

        I’m not much of an expert but it’s basically low power UHF radios that use a particular waveform and FFT process to decode signals that are well below background noise. My radio regularly picks up messages with an SNR -10. I like it to the GPS system’s algorithms.

        The main drawback is that, because they’re low power, you have to have LOS between antennas.

    • @Arthur_Leywin
      link
      3
      edit-2
      9 months ago

      How did you learn to not fuck up? I heard if you interfere with important radio frequencies (airplanes I think) you’ll get punished by the law.

      Edit: I looked into transceivers at one point and saw that mentioned.

      • @[email protected]
        link
        fedilink
        59 months ago

        They operate in bands intended for stuff like LoRa and IoT. So there’s no danger of messing with other systems.

    • @root
      link
      29 months ago

      Lmaoooo, was going to say the same thing. Fantastic project that has me hooked.

      • @[email protected]
        link
        fedilink
        49 months ago

        Not that far. Most LoRa systems use UHF bands so you need LoS to get these super low powered radios to work.