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MEDUSA (Mob Excess Deterrent Using Silent Audio) is a directed-energy non-lethal weapon designed by WaveBand Corporation in 2003-2004 for temporary personnel incapacitation.[1] The weapon is based on the microwave auditory effect resulting in a strong sound sensation in the human head when it is subject to certain kinds of pulsed/modulated microwave radiation. The developers claimed that through the combination of pulse parameters and pulse power, it is possible to raise the auditory sensation to a “discomfort” level, deterring personnel from entering a protected perimeter or, if necessary, temporarily incapacitating particular individuals.[1] In 2005,Sierra Nevada Corporation acquired WaveBand Corporation.[2]
Brief but intense pulses of radiofrequency (RF) energy can elicit auditory sensations when absorbed in the head of an individual, an effect known as the microwave auditory or “Frey effect” after the first investigator to examine the phenomenon (1). The effect is known to arise from thermoacoustically (TA)-induced acoustic waves in the head (2). Lin has proposed that the Frey effect may be linked to unexplained health problems reported by U.S. officers in Cuba and elsewhere, the so-called Havana syndrome (3). The failure to detect microwave exposure to the affected individuals lends no support to this hypothesis, and we do not speculate about the cause of the symptoms. The question remains: whether the auditory effect can be “weaponized,” i.e., used to harass or harm an individual. For reasons of effect size and practicality this appears unlikely, but the lack of publicly available information about existing high power RF technology and uncertainties about thresholds for adverse effects does not allow full resolution of the matter.
"In recent years, very high powered (gigawatt) pulsed microwave generators have been developed from low-GHz through mm-wave frequencies, many in classified defense projects. Dagro et al. (9) simulated TA waves induced in an anatomically detailed model of the body by a 5 μs pulse at 1 GHz pulse and incident power density of 10 MW/m2 (50 J/m2 pulse fluence). Dagro considered that to be “a reasonable upper limit given the publicly available literature on [high powered microwaves].” The peak acoustic pressure at any point in the brain was 10 kPa, well above that predicted by the present 1D model, which is associated with a relatively high SAR in the ventricles. These peak pressures were found in small, localized regions of brain tissue and were very brief in duration."
originally posted by: nugget1
a reply to: wavelength
Another great thread! I've been reading theories on acoustic levitation as a possible explanation for how many-ton blocks were moved into place at ancient sites.
If I had to guess, as long as TPTB have studied this phenomenon, as as little information as they've shared might indicate the advancements have gone far beyond anything we could imagine. If there's a potential to weaponize a technology, you can bet it's already been perfected.
When new, promising technologies suddenly go dark it may be time to ask why.
Thanks for another workout in mental gymnastics, Wave!
originally posted by: Ophiuchus1
a reply to: wavelength
Here’s a short research article and accompanying short vid about Voice Hearing people that may or may not tie in to aspects of the OP…..
Source People who 'hear voices' can detect hidden speech in unusual sounds
👽
SUBCARRIERS DEFINED: In the early days they were called Diplexers, alluding to their main function at that time, to place a second channel (TV audio) onto the same base-band signal as the television video signal for TV studio-to-transmitter (STL) microwave links. After a while, two or more channels were multiplexed onto the STL systems, so the term Sub-carriers came into prominence. The term Sub-carrier is now applied to a host of multiplexing processes that are carried in the frequency band above video, typically ranging from 4.5 – 10 MHz. In fact some channels have discarded the video and carry only audio sub-carriers.
Results of introducing jitter to the generator frequencies (resulting in jittering target frequency)
The effects are not instant, need some time to settle in but are repeatable for me. These are literally the words I used to describe, but translated for you
0.1 Hz - no effect
0.2 Hz - sensation of turning, light headedness sometimes headache inducing
0.3 Hz - dizzyness, disorientation, loss of balance
0.4 Hz - sensation of non linear chaotic movement, very uncomfortable sensation in stomach, very uncomfortable to listen to
0.5 Hz - nothing or no effect
0.6 Hz - good mood / wake up on a sunny day
0.7 Hz - definite joy / happyness inducing, light headedness but in a good way.
0.8 Hz - that feeling in the stomach when excited for upcoming events
0.9 Hz - similar to 0.8Hz but not the same
1Hz - no effect
originally posted by: Ophiuchus1
a reply to: wavelength
One other interesting article (pretty techie) ….it’s about audio Subcarriers piggyback/coupled (my words) to microwave signals….perhaps this adds an element to the OP.
Btw the Author incredibly misspelled “subcarrier” in the main title
Source SUBCARIERS IN MICROWAVE AND SATELLITE SYSTEMS
SUBCARRIERS DEFINED: In the early days they were called Diplexers, alluding to their main function at that time, to place a second channel (TV audio) onto the same base-band signal as the television video signal for TV studio-to-transmitter (STL) microwave links. After a while, two or more channels were multiplexed onto the STL systems, so the term Sub-carriers came into prominence. The term Sub-carrier is now applied to a host of multiplexing processes that are carried in the frequency band above video, typically ranging from 4.5 – 10 MHz. In fact some channels have discarded the video and carry only audio sub-carriers.
👽
originally posted by: TDDAgain
Awesome thread, very interesting read!
I now wonder if it's possible to entrain brainwaves with this technology.
www.abovetopsecret.com...
Results of introducing jitter to the generator frequencies (resulting in jittering target frequency)
The effects are not instant, need some time to settle in but are repeatable for me. These are literally the words I used to describe, but translated for you
0.1 Hz - no effect
0.2 Hz - sensation of turning, light headedness sometimes headache inducing
0.3 Hz - dizzyness, disorientation, loss of balance
0.4 Hz - sensation of non linear chaotic movement, very uncomfortable sensation in stomach, very uncomfortable to listen to
0.5 Hz - nothing or no effect
0.6 Hz - good mood / wake up on a sunny day
0.7 Hz - definite joy / happyness inducing, light headedness but in a good way.
0.8 Hz - that feeling in the stomach when excited for upcoming events
0.9 Hz - similar to 0.8Hz but not the same
1Hz - no effect
originally posted by: BelleEpoque
Great thread and a very relevant information.
Allan H. Frey has been a topic of speculation in my family since he was doing research at Willow Grove Air Force base at the same time my father was commander of the hospital there. We wonder if he knew about it.
Some addition information about his work especially for the techies.
Synthetic Telepathy and the Early Mind Wars
A video of a former military man, maybe from England, who worked on this technology in the 1960's was recently posted. At the time he wondered how can it be used as both a weapon and a communication device.
www.bitchute.com...
originally posted by: TEOTWAWKIAIFF
a reply to: wavelength
I have not elaborated upon this but I saw a triangle craft, silent, zip a hundred miles in seconds, turn and do a loop overhead in Anchorage, AK. What I withheld was it began making noise while charging the lights that were allowing me to track it (just before it passed in front of the moon it shimmered then went back invisible! I could only see the blue-white circles at each corner of the triangle).
First, it did a jet, complete with dopler effects. It changed lights to Cessna type and, again, made the sound of a single engine craft. It was not perfect but if you just glanced up, saw the lights, heard the engine, you would say, “just a plane”!
Half of stealth is getting you to ignore the obvious! See, if you see something that you can’t explain then you pay attention. If you can wave your hand at “juat a known object” then you get back on your way ignoring whatever that thing is!
Hint: There are so many single engine planes around that you know what normal operation should sound like. While trying to get the sound right the normal operation is ignored so if you know you can tell the difference!!