Getting deeply into amateur radio in the past year has really changed my perspective on the world around me. You start to get frustrated by cheap power supplies ruining your reception, you start to curse plasma TVs and power lines, etc. It gives you perspective for how limited our senses truly are, relative to the insane amount of general noise that things make. This is especially illustrated by things like RF-Capture by some MIT students, see their paper "Capturing a Coarse Human Figure Through a Wall" [1].
Signals are going to be weaponized in ways that we cannot imagine, a very loud but humanly imperceptible transmitter is only the beginning.
Nah. What you need is a transmitter powerful enough that all the cursing is done by everyone else around you. :)
j/k - I guess I'm jaded because I live in a densely populated area, and there's no place nearby where there's no RF pollution all the time. And yeah, while my plasma TV is on, reception is junk on all frequencies.
Turns your entire house into an antenna that radiates across useful frequencies. Like whispering between two people while a tornado siren is going off 100 feet away.
"Unfortunately these devices tend to wipe out almost the entire HF spectrum for anyone listening nearby. As household powerline cables are not shielded for RF emissions they radiate in the HF spectrum quite heavily."
All digital gizmos basically radiate electromagnetic energy at more or less all frequencies all the time while they're on. But some gizmos are better behaved than others, and are rather quiet. Some are total trash, and they're just "shouting" loudly across a broad interval in the RF spectrum.
If there's something like that nearby, your receiver will drown in noise, and you'll be unable to pick up faint signals from distant transmitters.
I don't know much about Powerline, but typical offenders are plasma TVs, cheap computers, etc.
Think of every wire that connects your outlets together, generally these are pretty long. Powerline Ethernet turns those wires into antennas so you get things like this[1].
When you're talking about radio waves there's two power measurements PEP and ERP. PEP is roughly what wattage a radio is spec'd at. ERP is PEP * Antenna Gain, so your long runs of wire make them a high gain antenna.
To use a poor car analogy PEP = horsepower, ERP = 0-60mph. Powerline is a motorcycle, not a lot of HP but still stupid quick(loud).
What makes this even worse is that since your wires are different length is means the noise is pretty wide-band(every frequency) and so it's not something that can be easily filtered.
tl;dr: Two ultrasound devices in the same room can interact to produce audible sound at dangerous volume under some circumstances. Ultrasound devices include bugs, microphone jammers, and many other things.
but if you have two 60db transmitters, the max you can produce (from my understanding) with constructive interference is 70db , since db is logarithmic. so does that mean the transmitters in question were already transmitting at 100+db?
Some ultrasound devices operate at power levels that would be dangerous by themselves if they were at a different frequency. Eg the article mentions "One advertised jammer emits 120-dB ultrasonic interference at a distance of 1 meter".
While true, the energy delivered to the subject depends on the radiation pattern. A 100W light bulb can help you pick out clothes in the closet, a 100W laser can cut steel (sorta).
That's in part why I said 'sorta', but Kern actually sells a 150w CO2 laser that they will support for metal cutting applications (2mm for mild steel).
I'll conveniently ignore the O2 assist for the sake of counterpoint. :)
Probably because it's possible for people to implement these sort of weapons, and they don't want terrible people inflicting somewhat untraceable brain damage on unsuspecting victims, seemingly out of the blue.
If they're leaving out explicit (or even the vaguest) details, it probably means that's the only thing keeping this out of the hands of weirdos.
Also, other layers of secrecy are likely in play. It's probably already known that such weapons do exactly these things, but how would people even know, without published research? Top secret military experiments? Private research performed by military contractors? (in other words, takes one to know one)
Another possibility: It is one party (state or non-state actor) that has conducted attacks on the US in Cuba and China, which may not necessarily be either Cuba or China or acting with their knowledge. (Even when it was just Cuba, third-party attack was a possibility discussed.)
If it is an attack rather than an accident, then after the Skripal poisoning, Russia should be the #1 suspect. There is only one country in the world that is brazen enough to attack a US consulate in China.
That doesn’t make a lot of sense. The Skirpal incident is very murky, but even if for the sake of argument we assume that the government ordered it, attacks on a traitor who fled the country would not be in any way relevant to an attack on an American in China. I can’t imagine how one would even suspect Russia here. Not to mention, they would be unbelievably stupid to do something that risky for no real gain.
That's just it, doing something unbelievably stupid for marginal gain is the Russian M.O. right now. There are still people in hazmat suits cleaning up leftover nerve agent in Salisbury.
As a general rule, if you ever think an adversary is is doing something unbelievably stupid for marginal gain, you should be worried, because it’s a good indication that you’re the stupid one and going to make a stupid mistake.
They either had nothing to do with it, or they did have something to do with it and it was for good reasons (good for them, not us) that we don’t understand. But them doing it because they are stupid is probably not one of the explanations.
There is good reason to doubt the Skripal story -- among other things the apparent lack of hard evidence, the absence of any discernible upside for Russia the purported perpetrators, and the already-existing climate of relentless and politically convenient warmongering against Russia for going on 2-3 years now. If Russia is being set up for military attack, then we're currently seeing a propaganda campaign pretty similar to many others. Fool me once... shame on me etc.
How do you know I'm wrong? You heard it from one of those same sources? I'm not saying I would outright believe RT or any of Putin's outlets either, but that's exactly the point: a healthy dose of skepticism is called for.
> politically convenient warmongering against Russia for going on 2-3 years now
You realize Russia has invaded (and annexed territory from) multiple neighboring sovereign nations over the last 10 years? The idea that the west is simply posturing to set up a war with Russia while Russia is starting actual wars is laughable.
They actually haven’t done that. There are other sides to both of those stories that are pretty well supported and make for a far simpler and more straightforward explanation. It’s politically unpopular to discuss that though. Even floating the idea that there might be a rational explanation is enough to invite knee-jerk downvotes and accusations of being a fake Russian troll account. I find it quite bizarre.
Do you know anything about the 'invasion and annexation' of let's say Crimea?
Imagine that the US as a nation was dissolved at some point. And some of our territory, perhaps a bit of Texas, ended up the property of Mexico. This new part of Mexico remained almost entirely American in both ethnicity and identity. And then some decades later Mexico began to collapse in internal turmoil with their government being violently overthrown from within. In the mean time the former US had regained a good deal of its lost strength.
In the midst of this, local forces in the annexed regions of Mexico, probably with some support of the US, formed their own interim government. And they then held a vote on whether they should remain part of Mexico, or return to the US. And with 83% voter turnout, 97% voted to return to the US. Those are certainly North Korea like poll numbers, but they have been reflected in later polls by third party organizations including Gallup. If anything it reflects how absurd the initial situation was. The US then declared them as part of its territory and the 'invasion' ended with nary a fatality.
I think there is a strong argument that the people should have been allowed to return as part of Russia if they so overwhelmingly desired it. But even that was something that was not independently acted on. You had a nation collapsing and a group of people in that nation that really did not want to be there. Annexation and war generally implies that the annexed nation did not want to be annexed. In this case, it was their former 'owner' that was holding them against their will.
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The Project for the New American Century was a think tank made up of basically every big name in Washington. It was from Bush's era, but many are still playing extremely prominent roles in DC politics. This paper from them [1], 'Rebuilding America's Defenses' is one of the most honest and clear views of neoliberal foreign policy to date. To avoid bias, I'm going to avoid commenting directly on the paper. Other than to say that our foreign policy actions make vastly more sense if you peruse that paper, but it will also make you vastly more cynical. Keep in mind there that Russia's rise from the USSR's collapse is something that certainly qualifies as what the paper refers to as 'the emergence of a new international player.'
Your haughtiness really doesn't improve or bolster your point. Google "Victoria Nuland Viktor Yanukovich regime change" together for some examples of contrary information. Hillary's State Dept. (Nuland et al) destabilized the Ukraine in the first place (2014), to get rid of Yanukovych (duly and democratically elected by a sovereign nation), who maybe coincidentally had previously been leaning toward joining the Russian/Asian trade & cooperation zone instead of NATO. Hmm interesting. Kiev soon turns into a neo-Nazi shitshow. Crimea, made up almost entirely of ethnic and linguistic Russians, holds a referendum and votes to join Russia. "There's a big powerful country with a big military next door, that we used to be a part of anyway, that can protect us from neo-Nazis and US meddling alike? Huzzah, welcome the tanks!" For Russia it's their best shot at a warm-water port, so I agree it is a bit convenient for them. But think about what the US would do if Russia toppled, say, Ontario. Do we let foreign governments create failed states on our borders? We almost started WW3 over Cuba.
Do you dispute that Russia poisoned Litvinenko as well? Enemies of the Russian state just seem to be poisoned by incredibly rare substances every now and again.
I don't know much about that case, but a cursory read on Wikipedia (which could itself be biased and/or misinformed) is a bit more convincing than the Skripal case.
Nonetheless we're getting pretty far afield. Select two incidents where any nation has killed its double-agents or whistleblowers (and I doubt there are any nations that lavish fond treatment on their double-agents in particular), and you now have evidence against that country equivalent to that upon which you declared Russia the only possible country brazen enough to carry out these two embassy attacks (assuming they were attacks).
The person I'm conversing with mentioned two, and based on that, concluded Russia is the #1 suspect here, and the only country brazen enough to do it. All you have to do is pick two assassinations by any other country, and that country is now equally brazen. The point is that the statement is weak, not that there have been two assassinations in history. Get it now?
I don’t know it’s so much Russia’s MO as the result of a decentralized Russian intelligence community that overlaps heavily with criminal elements. So some Russian mafia cell may be spying on Americans hoping Putin throws some legitimate business their way if they prove their worth by murdering a defector with some poison they “found”.
The downside to this structure is that you have rogue agents you can’t control. The upside is that clandestine operations are very difficult to uncover if nobody in Russia knows about it.
Skripal didn't fled the country. He was caught, trialed, jailed and then exchanged. That whole incident makes absolutely zero sense as explained by the UK government.
Right, that’s an important correction. It casts even more doubt on his poisoning being state ordered.
The smoking gun is that the nerve agent came from a USSR factory decades ago. It’s not hard to imagine that ended up in who-knows-whose hands since then.
Plus, it didn’t even do the job. Skirpal was released from the hospital. Seems pretty amateur...
This says "you should not do spy exchanges with us". Moreover, let's shoot this poor shmuck with an exotic bullet stamped with "Made in Russia" on its side AND let's also just wound the guy.
The bottom line is that this gives Russia nothing. It proves no point, it doesn't serve as a deterrent to anyone (which is what makes it different from the Litvinenko case), but it's just happens to be overflowing with signs that it was done by Russia. If Russians went to such great lengths to make sure it was obvious it was done by them, then it should be even more obvious why they did that. And it's not. So the simplest explanation is that it's a frame-up.
Except nations do it anyway, regardless of the message it sends to potential exchange partners. Mazen Faqha was released by Israel in a prisoner exchange, and was later assassinated.
It serves as a deterrent if it sends the message to your own people that treason will never be forgiven, regardless of a pardon and exchange. And that is a philosophy to which Putin subscribes – he once said, "Enemies are right in front of you, you are at war with them, then you make an armistice with them, and all is clear. A traitor must be destroyed, crushed."
My tinfoil hat was actually pointing at non-state actors.
This would be something within their means, and something that I'm sure somebody would benefit from.
Terrorists have been brazen enough to attack US diplomatic missions in the past. That's not to say that I think ISIS is attacking US diplomatic missions with sonic weapons, but if we're going to go with the theory that it is, in fact, a sonic weapon, there's no reason to believe that it could only be Russia.
> If it is an attack rather than an accident, then after the Skripal poisoning, Russia should be the #1 suspect. There is only one country in the world that is brazen enough to attack a US consulate in China.
If it was Russia, I don't understand what's the upside here? Step 1:Hurt US diplomat in China Step 2: Start a wave of condemnations from both countries. Possible retaliations. More sanctions. Step 3: ? Step 4: Profit. They are bullies and have assassinated before but they don't seem to be completely irrational. What would be their Step 3 in the plan?
> There is only one country in the world that is brazen enough to attack a US consulate in China.
> Russia should be the #1 suspect.
If it was actually true that there was only one country in the world brazen enough to attack a US consulate in China, that country would be China, not Russia.
GP meant (I think) that there is only one country brazen enough to do that in another country. I think that would be right.
I'm willing to believe the same operators pulled off these two attacks (well, they look like attacks; let us assume for a moment that they were). In that case it was either China or Russia -- I seriously doubt the Cubans would do this in China, so that leaves either China or Russia. Of course, it could also be North Korea, or who knows who else (Iran?).
I doubt anything will come of the local investigations, so until there is a third attempt, we may not find out what's up.
It's completely absurd. If it transpired that China had been attacking the foreign missions it was hosting, it would instantly go from superpower to pariah state. Countries would pull their diplomats out of China. China would lose credibility even among its allies.
I was pretty amused by the suggestion in https://news.ycombinator.com/item?id=17135061 that it's actually US spy equipment that is malfunctioning and causing the problem, but it's honestly not totally implausible.
People dropping over in embassies in your country is a major embarrassment and I'd tend to assume it was a third party in both cases whose actions caused the illnesses in both embassies. There are lots of governments which would be interested in US internal diplomatic discussions and might be using high powered microwave transceivers or whatever this is to get it. So if anything I'd tend to see this as evidence point to someone other than the Chinese being behind this.
4. Russia attempting to throw more tension into the US relationships with Cuba and China. Historically that wouldn't be unusual at all, for Russia to screw with the US in such a way. In real terms the US is in a cold war with Russia (and has been for a decade). The US recently killed hundreds of their citizens that were acting as foreign proxy militia, in Syria; I would imagine there's all sorts of tit for tat going on between the two countries. We're into a new era of the large powers messing with each other again.
If that were the case re Russia, however, I'd have expected to see a lot more cases in China, to really push it.
Shoddy spy tech, on one side or the other, is the most likely cause imo.
Worth noting that the incident to which you are referring was a case of non-military Russians employed by Assad as mercenaries, who attempted to attack US forces in Syria. The Russian military and the US military in Syria are in fairly close communication, and both are taking pains not to strike each other. The Russian government likely does not care much about the rogue mercenaries who made a dumb decision to attack Americans, and certainly are not going to retaliate by attacking other Americans in other countries. Considering that the attack on the Americans is the kind of thing that could kickstart a war, I’d almost guess that the Russian government would retaliate against the private security contractor for nearly destabilizing the situation and almost provoking a US counter attack against Russian military forces.
The Wagner Group (the mercenaries you speak of) are considered by some experts to simply be a group controlled by the Russian Government for "plausible" (nothing plausible about it though) deniability.
I don’t think any qualified experts would make that claim, but happy to be proven wrong if there is any real information about how the group works. Unfortunately it’s hard to learn anything about this because the discourse is nothing but pundits with an agenda. Even if that’s the case though, the events in question make no sense strategically, so it makes no difference.
That's why you'd use a cut-out: plausible deniability. Russia has attempted and/or carried out multiple hits on NATO soil in this exact manner, including one with a novel nerve agent.
> In real terms the US is in a cold war with Russia (and has been for a decade).
At least two; the new Cold War was talked about a little bit before, but became undeniable during the Balkan crisis and resulting international peacekeeping missions.
It got less public attention (at least on the US side) when the focus was on US hot wars in the Middle East and Central Asia, but it didn't go away.
I feel like this would make sense for Russia and Cuba given the power dynamic, but the risk of being exposed by China... I would consider that too high a risk for Russia to piss off the other economic super power.
I agree with you, but there was some speculation that it could be Russia trying to ruin diplomatic ties between the US and Cuba. And Russia does have quite the history of abusing diplomats (though typically only within Russia.)
I could see Russia trying to stir the pot because formenting chaos with plausible deniability seems to be part of Putin’s strategy toward the west, although I would have imagined that the UK would be a more recent target. NK is trying to dethaw relations so that doesn’t make much sense. That leaves you with Iran. Unless of course it’s not a weapon at all. It could even be interference with US counter survalience technology.
It's possible that the U.S. is making the whole thing up, in order to trigger a reaction from their adversaries.
An illustration: A parent suspects their child of sneaking out at night while the parent is sleeping. Lacking any evidence, the parent nonetheless declares that they saw the child sneak out! The child admits the wrongdoing, providing the parent with the evidence they lacked.
One more possibility: US equipment operated intentionally by covert US personnel. Why? Maybe for simple "field testing." Or as a false flag attack. Or in service of some intra-US political goal (power games don't always cross national borders even when they happen in foreign lands - example: Mr. Diplomat is getting too cozy with Cuba/China, or talking to the "wrong people" in Cuba/China, or is getting dangerously close to stumbling on some important information about US activity in Cuba/China).
Another possibility since we're already in some pretty cynical territory: The whole thing is made up. That way, you get all the "blaming" benefits of a false flag attack without the expense and risk of pulling off an actual attack. I haven't scrutinized the evidence at all though, if there is any, so if you jump down my throat, do it gently. The Skripal poisoning may be one of these also.
4. It's a covert war involving tech that neither side wants to disclose. This may be the counterattack for the string of unusual Russian diplomat deaths last year[1].
I wish I could be that confident about things that I don't have inside information about! Working against that theory is consistency of the reports, the physiological evidence, and the high likelihood that the affected would be high value espionage targets.
There isn't actually any physiological evidence in the China case. mTBI can only be diagnosed by symptoms; there are no biomarkers for diagnosing it.
The media reports say the symptoms were "subtle and vague, but abnormal, sensations of sound and pressure" that lasted a year. That sounds entirely consistent with a psychiatric explanation.
People working in embassies aren't somehow immune to psychiatric issues (and may in fact be more likely to experience things like this, due to the pressures of their work).
Just yesterday I listened to Skeptoid podcast episode on this topic [1] and today viola. The conclusion from Brian Dunning in that Skeptoid episode is also mass hysteria.
I do also like the psyops disinfo theory - as stated elsewhere in this thread, suppose it was some other less respected nation that was making claims that their diplomats were victims of a mysterious sonic weapon. The claim would be poorly received. Personally there's a deeply appealing irony in the mass credulity being something like an even more massive mass hysteria.
No, but there is no evidence to support the sonic weapon hypothesis either, and a psychiatric explanation does fit the facts a lot better. Why would a single person in the Chinese embassy suffer the symptoms for over a year, while no other employees experienced it?
Evidence for what? The article gives evidence that it just happened to one person. I'm using logic to show that that doesn't fit the model of a sonic weapon.
Here is some evidence linking tinnitus to psychiatric disorders:
That's great, but you alleged this was the cause of a specific person's symptoms. Your citation does not support your claim – it's circumstantial and speculative.
So is the original allegation in the article. I'm saying that psychiatric explanation fits the facts better. If you have any evidence to the contrary, feel free to post it...
Do you have something against a psychiatric explanation?
Simplest explanation to me seems like some equipment we are using to protect US consulates is interfering with the brains of these employees. For example, isn't it common to use cell phone jamming devices at these places? what effects if any do they have on our brain? We have never studied these effects in detail.
Take a look at this product: https://techcrunch.com/2014/11/03/cocoon/ How do we know something like this or an advanced version of such devices that use infra/ultra sonics could not have had adverse side effects?
Well these are Gov employees so there is a Fringe possibility that has been confirmed to be black projects where Remote viewers attempt to access information through telepathy. Many of the reported symptoms are just like the reported in this article with pressure and weird sound sensations along with nausea and headaches. Some were diagnosed with brain injuries as well.
Again this is the tin foil hat projects that many conspiracy theorist claim is still happening today.
during WWII Germany Scientist did research on remote viewing.
A single guy, feeling weird sensations in his head, who ended up being diagnosed with a brain injury.
Which begs the question: What was there first, the brain injury or the weird sensations? Who's to say his weird sensations are not the result of said brain injury? Which imho is the far more plausible explanation.
I'm not limiting it to China because the same syndrome has happened elsewhere to multiple people, and a cause must be found. Brushing problems away because of one subsequent potentially-questionable report does not solve them.
The Cubans don't make a whole lot of sense as a prime suspect.
The first issue occurred right as Cuba was having sanctions lifted, tourists started bringing money in, and things were heading in a positive direction. Cuba was damaged by this incident and it pushed back diplomatic relations potentially years.
We cannot discount a rogue element within Cuba of course. Or the Russians/Chinese who may feel they could benefit from worse relations between the US and Cuba.
It could also be a complete accident (e.g. faulty counterintelligence equipment).
To nitpick - Cuba did very well as a tourist destination even without US tourists. It's the US _investments_ in the tourist infrastructure that started to appear and matter.
You are too dismissive of the obvious. The Cubans may want the money and the tourists, but the Cuban Government does not. Capitalism weakens socialist/communist governments. If there were some fundamental flaw with equipment, it would happen in plenty of other places...why hasn't this issue come up in consulates in Germany? Why did it start the instant we send diplomats to Cuba? It only happens in countries where operatives would be free to experiment without fear of reprisals from the local government. The proximity of the Cuban Consulate is NOT a coincidence. Cuba may be trying to deflect attention away from themselves by saying 'see, it happened in China too'.
The Cuban government negotiated the embargo relief with the USA, not the Cuban people. Regardless, this is a silly theory, because Cuba already has a robust tourist economy from every country that's not the USA. Not to mention its robust exports of rum and cigars.
In regards to if it was American equipment, why did it not happen in Germany? Well, the US embassy in Cuba is a brand new embassy, so it makes sense that they'd have brand new equipment.
And of course the Cuban and American consulates in Guangzhou are close to each other. Consulates and embassies tend to be clustered near each other.
The Belgian embassy in Cuba is just around the corner from the American embassy, and the Belgian consulate general in Guangzhou is just around the corner from the American one. So it could just as well be the Belgians attacking American diplomatic missions.
except there is nothing socialist/communist about Chinese government except brand name and it can hardly weaken brand which is just running thw orst version of capitalism, EU is way more socialist/communist than China
> except there is nothing socialist/communist about Chinese government except brand name and it can hardly weaken brand which is just running thw orst version of capitalism, EU is way more socialist/communist than China
Tell that to China.
Massive parts of their economy are state owned. IIRC, the state also has significant ownership stakes in many of its marquee companies.
Isn't it? Afaik so far this has only been affecting one US employee in China.
That same employee was diagnosed with "a mild brain injury", whatever that's even supposed to mean, but he's the only one and he has an injured brain.
Couldn't it be that he felt these sensations because of the brain injury and being impressed by what happened in Cuba lead to him making connections that don't exist? People are impressionable like that, that's why the placebo effect, and mass hysteria, are very real things.
There is no biomarker for mild traumatic brain injury. It is diagnosed based purely on symptoms after a mild concussion. In this case there was no concussion, so the diagnosis seems a bit suspect.
It seems like we'd know by now (I mean here in the US) whether there are sounds that 1) can cause mild TBI symptoms and 2) are only just barely [0] detectable.
Mild TBI symptoms include [1]:
- May remain conscious or may experience a loss of consciousness for a few seconds or minutes.
- Headache
- Confusion
- Lightheadedness
- Dizziness
- Blurred vision or tired eyes
- Ringing in the ears
- Bad taste in the mouth
- Fatigue or lethargy
- A change in sleep patterns
- Behavioral or mood changes
- Trouble with memory, concentration, attention, or thinking
I'm guessing that since this has hit the media via [1] and Pompeo's reporting, the "employee personal/performance problem" angle has been ruled out.
No matter what the physical cause of the injury is, it's trivial to create false attribution with it. It happened first in Cuba, so Cuba got a lot of blame. Now it's happening in China. Did China come up with the same brilliant idea? Buy it from Cuba? Or did they both just end up with shoddy surveillance equipment?
If I had to guess, it's probably the latter. No matter the cause, though, if you knew how to do it you could pull off the attack in [insert questionable country here] and create suspicion for that country. It would be a really fast and effective way to create diplomatic tension for a third party who stands to gain from the breakdown of communication.
The only common ground to those cases are americans in US consulates. So logical conclusion is it is case of self-shooting in the foot - Us spy equipment malfunctioning etc
That doesn't say much, because it's not beyond the realm of possibility that the US shares some equipment (made up example: ultrasonic or other anti-jamming technology) or other technology with Canada.
If it was a country way less friendly to the US than Canada (or even less friendly, if you want to make the questionable argument that Canada is not friendly to the US), that would be a better indicator.
I was objecting to the phrase "only americans in US consulates", when clearly it's not. Kind of pedantic, I know.
That said, asserting that it's not "beyond the realm of possibility" that this phenomena might affect US allies because of shared equipment is pure conjecture. Many things about this are not beyond the realm of possibility.
Wouldn't they (US gov't) want to keep this out of the media then? Does it make sense to have it run around the media if it was from malfunctioning equipment. This is under the assumption they would realize it's their equipment before publicizing the event.
One moment George, lets turn on the portable anti microphone device that the embassy gave us, before we discuss this. Hmmm. I seem to be developing a headache.
Seems like the parties with multibillion dollar budgets (i.e. Nations) need to make a credible effort to work on technologies to detect/track-down these devices.
Then this eavesdropping arms-race that is hurting innocents can stop.
does anyone actually believe in this 'sound attack'? why didn't any of the Cubans working in the US embassy in Cuba suffer from the supposed ill effects. Is there something different about American biology that makes them susceptible to these attacks?
Do you have any idea about the energy levels needed to get ultrasound through even a few meters of air, not to mention concrete, and glass probably doesn't help either. Not to mention for highly localized beamwave-wavefront peaks. I don't really, but 100 feet distance would include somuch noise from heat convection and whatnot that a simple targeted ultrasound canon so tonspeak would be mere fantasy.
Signals are going to be weaponized in ways that we cannot imagine, a very loud but humanly imperceptible transmitter is only the beginning.
[1]: http://rfcapture.csail.mit.edu/rfcapture-paper.pdf