Microwave dispersal cannons can be blocked by a large poster covered in aluminum foil. Just be sure to attach it to a wood stake.
Sound cannons are loud enough to work through strong ear protection, but sound waves are still air pressure pulses. You can disrupt the flow of the pulse with a solid enough curved shield.
If necessary, storm matchs have their own oxidizer. You can light it and wind won’t put it out. Styrofoam and gasoline is sticky. Use that information however you want
Do not use a belt to stop blood flow. Get some proper tournequtes (I don’t remember how to spell it). Slide it on, and turn it until the bleed stops. If you think it’s too tight, turn it some more.
Edit: most military vehicles are diesel fueled. They are pretty thirsty, so be sure to share water with them. Right in the fuel tank is good enough.
I did not know about these, but some quick searches suggest that they pose a major threat to people’s eyesight as they can boil your retina before you really feel anything when used at a low strength.
Messed up these are used at protests, fuck these fascists.
Do not use a belt to stop blood flow. Get some proper tournequtes (I don’t remember how to spell it). Slide it on, and turn it until the bleed stops. If you think it’s too tight, turn it some more.
If you’re worried about blood loss, there are some online resources for how to do first aid. I think https://www.stopthebleed.org/training/ was recommended last time this came up.
I read you need to be careful with tourniquets, because they’re quite painful and if used inappropriately can cause long term damage. Used appropriately they can save a life, but you don’t want them to be the first tool you reach for.
Long-term damage is only really a danger after a couple hours in a proper tourniquet. Something makeshift in order to survive to a hospital is always fine. It’s like CPR: breaking ribs is a small cost to pay for survival.
Yeah I think either DeviantOllam or Tacticool Girlfriend on YouTube says 2 hours. It might be in Ollam’s “Passport. Lawyer. Locksmith. Gun.” talk. Unfortunately I don’t have that info indexed yet.
If you curve the aluminium foil somehow, you can actually refelct it back. They did tests on youtube where they used a flipped riot shield and it work.
Sounds like you could make a curved protest sign with plywood and then hide some foil between the plywood and a paper/cardboard layer for a fairly inconspicuous shield that can block and even reflect both microwave and sound cannons.
Sound cannons are actually pretty weird, in that they don’t work like you’d imagine them to work. They produce sound when multiple beams of ultrasound collide with an object, so if they’re pointed at you, you’re the one producing the sound that hurts you. That’s why they’re so effective.
Some people online have done some tests, and thin cardboard appears to be the best way to stop them. Put the thin cardboard before you, and it stops most of the sound. It can be the cardboard from a poster, if you have one.
Ear protection headphones (for workshops) also help, and their effectiveness is enhanced further by wearing small earplugs inside. Active noise cancelling headphones don’t help and can even be counter productive, so don’t use those.
To be a little more pedantic, they send ultrasound frequencies and they “degrade” into regular audible sound waves when they collide with something (combination of harmonic effects and destructive / constructive interference). The reason they send ultrasound instead of using regular directional speakers is because it’s smaller wavelength is easier to aim so much more of the energy moves forwards, so you don’t hear much noise coming from the source itself.
That’s why they work for “crowd control”. A strong enough regular speaker would bother the operator too much.
The noise cancelling part was particularly fascinating. Not only was it ineffective, it amplified the sound. I think its because noise cancelling circuitry relies on the ability to create a signal frequency that cancels out the initial waveform. That’s all well and good, but I think the sound cannons use separate speakers out of phase. Since the noise cancelling headphones produce a signal in phase with the first frequency detected, the microsecond slight delay causes it to be added to a subsequent phase boosting the power.
You cannot electronically filter out sound. That’s not what they do. They just emit the same sound they hear in the opposing phase. This is risky with sonic weapons.
Microwave dispersal cannons can be blocked by a large poster covered in aluminum foil. Just be sure to attach it to a wood stake.
Sound cannons are loud enough to work through strong ear protection, but sound waves are still air pressure pulses. You can disrupt the flow of the pulse with a solid enough curved shield.
If necessary, storm matchs have their own oxidizer. You can light it and wind won’t put it out. Styrofoam and gasoline is sticky. Use that information however you want
Do not use a belt to stop blood flow. Get some proper tournequtes (I don’t remember how to spell it). Slide it on, and turn it until the bleed stops. If you think it’s too tight, turn it some more.
Edit: most military vehicles are diesel fueled. They are pretty thirsty, so be sure to share water with them. Right in the fuel tank is good enough.
I did not know about these, but some quick searches suggest that they pose a major threat to people’s eyesight as they can boil your retina before you really feel anything when used at a low strength.
Messed up these are used at protests, fuck these fascists.
Eh, from what I’ve watched “low strength” is still quick enough to trigger people to scatter.
Remember, it obeys r squared, so if they use it and want it to be effective at distance, they can’t reduce the strength a lot.
If you’re worried about blood loss, there are some online resources for how to do first aid. I think https://www.stopthebleed.org/training/ was recommended last time this came up.
I read you need to be careful with tourniquets, because they’re quite painful and if used inappropriately can cause long term damage. Used appropriately they can save a life, but you don’t want them to be the first tool you reach for.
Long-term damage is only really a danger after a couple hours in a proper tourniquet. Something makeshift in order to survive to a hospital is always fine. It’s like CPR: breaking ribs is a small cost to pay for survival.
Yeah I think either DeviantOllam or Tacticool Girlfriend on YouTube says 2 hours. It might be in Ollam’s “Passport. Lawyer. Locksmith. Gun.” talk. Unfortunately I don’t have that info indexed yet.
That’s a fair point, and thank you for linking stop the blees
If you curve the aluminium foil somehow, you can actually refelct it back. They did tests on youtube where they used a flipped riot shield and it work.
Sounds like you could make a curved protest sign with plywood and then hide some foil between the plywood and a paper/cardboard layer for a fairly inconspicuous shield that can block and even reflect both microwave and sound cannons.
Old spark plugs are really handy for craft projects since you can break them and make pretty mosaics
Sound cannons are actually pretty weird, in that they don’t work like you’d imagine them to work. They produce sound when multiple beams of ultrasound collide with an object, so if they’re pointed at you, you’re the one producing the sound that hurts you. That’s why they’re so effective.
Some people online have done some tests, and thin cardboard appears to be the best way to stop them. Put the thin cardboard before you, and it stops most of the sound. It can be the cardboard from a poster, if you have one.
Ear protection headphones (for workshops) also help, and their effectiveness is enhanced further by wearing small earplugs inside. Active noise cancelling headphones don’t help and can even be counter productive, so don’t use those.
To be a little more pedantic, they send ultrasound frequencies and they “degrade” into regular audible sound waves when they collide with something (combination of harmonic effects and destructive / constructive interference). The reason they send ultrasound instead of using regular directional speakers is because it’s smaller wavelength is easier to aim so much more of the energy moves forwards, so you don’t hear much noise coming from the source itself.
That’s why they work for “crowd control”. A strong enough regular speaker would bother the operator too much.
The noise cancelling part was particularly fascinating. Not only was it ineffective, it amplified the sound. I think its because noise cancelling circuitry relies on the ability to create a signal frequency that cancels out the initial waveform. That’s all well and good, but I think the sound cannons use separate speakers out of phase. Since the noise cancelling headphones produce a signal in phase with the first frequency detected, the microsecond slight delay causes it to be added to a subsequent phase boosting the power.
4
Would hearing protection that electronically filters sound be able to cancel out sonic cannons?
You cannot electronically filter out sound. That’s not what they do. They just emit the same sound they hear in the opposing phase. This is risky with sonic weapons.