• Null User Object@lemmy.world
    link
    fedilink
    arrow-up
    132
    ·
    edit-2
    15 days ago

    The first paragraph is great advice.

    The second one is such utter hogwash on so many levels it’s hard to know where to start.

    • Police that are intending to disrupt a protest are planning and organizing in person, not over the radios. That’s just stupid.

    • Regular police radios are frequently encrypted now. You can be damn sure DHS has been encrypting their radio traffic for decades. I can say, from personal experience, that my small hometown police started encrypting some of their radio traffic at least 40+ years ago.

    • Even if it wasn’t encrypted, you have to know what frequencies they’re using. Scanners only check one frequency at a time for traffic, so it can take several seconds to get through all of them if you have a lot of candidates. This means that you will frequently miss the first part of a transmission, and occasionally miss the entire thing if it’s short. Once it detects something on one frequency, it stops there to monitor that frequency for as long as the conversation is going on. This means that you’re missing everything happening on all of the other frequencies you have.

    • Lastly, RADIO SCANNERS DO NOT TRANSMIT! PERIOD. They are receivers, like the radio in your car that you listen to music local advertisements on.

    It’s fairly obvious that the person that wrote that has never in their life used a radio scanner and has no idea how they actually work.

    • tiredofsametab@fedia.io
      link
      fedilink
      arrow-up
      23
      ·
      15 days ago

      There’s also truncing, but some scanners support that. I imagine the op was referring to baofengs from Amazon or something which opens another can of worms

        • FYI: There are apps that convert a string of text to sounds that can be played over a radio then you use the same app on the other end to decode it. RATTLEGRAM is open source and available on both iOS and Android (F-Droid also have it). You can encrypt the text before copy pasting it over to RATTLEGRAM. Secure Space Encryptor is an open source app that does text encryption (also known as “Paranoia Text Encryption” on iOS), just gotta share a secret password beforehand shared via a secure channel.

          So (1) type text (2) encrypt it (3) copy paste the ciphertext to rattlegram, max the volume, play that sound over the radio (4) the person at the other end also use RATTLEGRAM to decode the message and get the ciphertext (5) use the same text encryption app to decrypt the ciphertext… Voila, ez encrypted radio communications over cheap baofengs (assuming your phone isn’t compromised, but you can load those apps on an airgapped android phone)

          Legal Disclaimer: FCC Regulations does not allow encryption over Amateur Radio frequencies. This is for informational purposes only.

    • night_petal@piefed.social
      link
      fedilink
      English
      arrow-up
      12
      ·
      edit-2
      15 days ago

      Also, transmitting is exactly what they want you to do. Triangulation of a signal source is trivial. It makes it sound like this was written by someone that wants you to get arrested.

    • MinnesotaGoddam@lemmy.world
      link
      fedilink
      arrow-up
      8
      ·
      15 days ago

      Regular police radios are frequently encrypted now. You can be damn sure DHS has been encrypting their radio traffic for decades. I can say, from personal experience, that my small hometown police started encrypting some of their radio traffic at least 40+ years ago

      yeah, my small hometown (i don’t even have fiber internet small oh your gods i’m going to go on a psychotic break over this later this week aren’t i) has their encrypted channel and their unencrypted channel because they know all us dorks are and have been listening for decades. when the town almost burned down a few years back, the unencrypted channel was how the last minute volunteer emergency services got a shitton of extra fire breaks mowed across the county fuck your property lines style and kept most of the town intact

    • Einskjaldi@lemmy.world
      link
      fedilink
      arrow-up
      6
      ·
      15 days ago

      Even regular private companies encrypt radio traffic, partially just to avoid getting someone else’s shit crossover.

    • ByteJunk@lemmy.world
      link
      fedilink
      arrow-up
      4
      ·
      15 days ago

      All true, but there’re fairly inexpensive radios on AliExpress and the like that do transmit as well.

      It’s technically illegal, at least on my neck of the woods, to transmit on reserved frequencies, but one could.

    • scarabic@lemmy.world
      link
      fedilink
      English
      arrow-up
      3
      ·
      15 days ago

      The whole text is smug and dumb (traffic cones? the kind with no holes in the top???) so I’m not surprised to hear it has all these inaccuracies.

      Police that are intending to disrupt a protest are planning and organizing in person, not over the radios. That’s just stupid.

      They do need some kind of telecommunication. At a certain size, a protest sprawls many blocks and it will ebb and flow and shift around. You know you’re making an impact when they bring in a helicopter to spot. Obviously the copter is radioing the ground. But yeah also probably not in an easily-overheard way.

  • mystik@lemmy.world
    link
    fedilink
    arrow-up
    29
    ·
    edit-2
    15 days ago

    Listening is legal, and in may areas they use digital modes(P25) without encryption. However, transmitting on any frequency you are not allowed to will get you in big trouble, and they will probably get help from local amateurs that routinely practice foxhunting.

    Amateurs will help, not because they’re cops, but because with a flick of of the pen , rules can be chaged to restrict their favorite hobby. Or worse — https://lemmy.world/post/41898188

    • Taldan@lemmy.world
      link
      fedilink
      arrow-up
      15
      ·
      15 days ago

      Which wouldn’t prevent a denial of service attack by flooding the frequency with whote noise as the post suggests

      That being said, I don’t think it’s a good idea. Police aren’t ICE, and in many cases police are the only ones that have been able to stop ICE from escalating further

      • Cort@lemmy.world
        link
        fedilink
        arrow-up
        11
        ·
        15 days ago

        Also. If you’re broadcasting (white noise) they can track your broadcast location fairly easily

        • Railing5132@lemmy.world
          link
          fedilink
          arrow-up
          6
          ·
          15 days ago

          And, if all the actions listed in the OP, it’s the only one that’s illegal. It has always been illegal to broadcast in regulated frequencies since licensure became a thing.

          • AxExRx@lemmy.world
            link
            fedilink
            arrow-up
            1
            ·
            15 days ago

            Was gonna say. Although i used to marine radio that let me talk on their frequencies.

          • Cort@lemmy.world
            link
            fedilink
            arrow-up
            1
            ·
            15 days ago

            It can make it more difficult and time consuming to locate them all. But it’s still easy to find single broadcasters. I think moving them constantly would be more likely to succeed.

    • AxExRx@lemmy.world
      link
      fedilink
      arrow-up
      2
      ·
      edit-2
      15 days ago

      Damn. My local PD and our state police and Fire/ ems all livestream their live scanners from the web, incase someone doesnt have a scanner.

  • tomiant@piefed.social
    link
    fedilink
    English
    arrow-up
    19
    ·
    15 days ago

    I have been thinking about water balloon based defenses. If you fill them with paint and throw them at someone wearing helmets with clear visors or gas masks they would have to remove them or not be able to see. If you miss there’d still be paint on a person wearing a uniform without any identifying information so it gets easier tracking and identifying who they are on video later.

  • Manjushri@piefed.social
    link
    fedilink
    English
    arrow-up
    15
    ·
    15 days ago

    Be aware that in a few states, including Minnesota, the use of a police scanner during a crime, or to evade law enforcement, can be a crime itself. If they arrest you for committing some crime, then having a scanner will get you another charge.

  • spaduf@slrpnk.net
    link
    fedilink
    arrow-up
    13
    ·
    15 days ago

    How to Survive Anti-Police Protests by Shane Burley is an appropriate primer for demo beginner.

    The Black Flag Catalyst Revolt Guide by Black Flag Catalyst is a more detailed guide on protest tactics.

    If you are interested in studying crowd control tactics in demo. Here are the resources: The Master’s Tools and Warrior Crowd Control & Riot Manual

    CrimethInc also have extensive resources on demonstration guides:

    https://crimethinc.com/2020/12/15/a-demonstrators-guide-to-body-armor-protecting-yourself-against-blows-batons-bullets-and-more

    https://crimethinc.com/2020/09/01/a-demonstrators-guide-to-helmets-everything-you-need-to-know

    https://crimethinc.com/2020/09/02/a-demonstrators-guide-to-gas-masks-and-goggles-everything-you-need-to-know-to-protect-your-eyes-and-lungs-from-gas-and-projectiles

    https://theanarchistlibrary.org/library/crimethinc-affinity-groups

    Indigenous Anarchist Federation also have some extensive guides on PPE and comm

    https://iaf-fai.org/2020/10/11/skills-for-revolutionary-survival-5-communications-equipment-for-rebels/

    https://iaf-fai.org/2020/08/31/skills-for-revolutionary-survival-1-trauma-medical-gear/

    https://iaf-fai.org/2020/08/31/skills-for-revolutionary-survival-2-basic-personal-protective-equipment/

    Riot Medicine

    https://riotmedicine.net/

    • speckofrust@lemmy.dbzer0.com
      link
      fedilink
      English
      arrow-up
      4
      ·
      15 days ago

      This is an outstanding list of resources. Thanks so much for posting. I wish more people would engage with stuff like this instead of clutching their liberal pearls. The Nepalese showed how to actually protest a corrupt government. All power to the people.

      Riot Medicine is an incredible resource and even I could make sense of it as a full-time idiot. Crimethinc are the poets of a generation who few people seem to know about despite being around for many years, and of course the Anarchist Library is one of the great online resources. Shout out to Serafinski.

  • A_Random_Idiot@lemmy.world
    link
    fedilink
    English
    arrow-up
    4
    ·
    15 days ago

    it was my understanding that a lot of police agencies moved over to digital/encrypted radio systems precisely because they wanted to avoid scanners.