7.83hz Personal Pocket Transmitter (Schumann Resonance)

[Wayneo]

Hi All 
I am looking to make a pocket size transmitter that runs at a very low frequency (7.83hz) also known as the Schumann resonance.
I have searched everywhere on how to make one, but I dont even know how they work? AM/FM or ?? other..
These Devices where used by German civil servants during the cold war when the Russians where using the "Woodpecker" transmitter for mind control or long range raydar.
The Germans called it the "Vitaset device" or "Vitaset transmitter"
What I would like to do is make one and was wondering if anyone could help me design one please?
I would be very greatfull for any knowledge that could be shared with me
Many thanks, all the best,
Wayne.

http://www.lessemf.com/schumann.html

[Feanor]

I have heard about this natural resonant frequency. I think people are trying to use it to send and receive wireless power.

I am guessing that all you want is a pure, low frequency sinusoidal output to drive some sort of low frequency antenna. No modulation required. The link you posted to seems to think that one single frequency is desirable. Modulation causes different frequencies to occur.

I have never built one but here is what I would do. I would build three stages.

7.83 Hz pure sine generator ===> Low harmonic distortion amplifier ===> Low frequency antenna

A chip like this would do for the sine generator. XR2206CP. The data sheet provides a "Circuit for Sine Wave Generation with Minimum Harmonic Distortion". Available on eBay.

http://cgi.ebay.com.au/2-XR-2206-XR2206CP-XR2206-Monolithic-Function-Generator-/280581098961?pt=LH_DefaultDomain_0&hash=item4153efcdd1

The output of the chip will not be able to supply very much power so you will need an amplifier or buffer to drive your antenna check out the class A or class AB amplifiers on Wikipedia.

http://en.wikipedia.org/wiki/Electronic_amplifier

The output of the amplifier will connect to one end of the coil, the other will connect to a capacitor, the larger the better. An electrolytic will have to be used, I am talking big, like 20 000 uF. They are available online. Get a couple and put them in parallel. The other end of the capacitor can be connected to ground or your supply voltage.

Now an antenna that transmits 7.83 Hz is an unusual thing, and using a standard type like a dipole/monopole is out of the question, it will be too large. Seeing as the antenna only needs to have a effect close to you I would use a flat coil of copper wire about .5m in diameter with enough turns on it to give about 20 ohms of resistance. Use a thin gauge of copper wire for this like 0.25mm I think about 200grams (60m) will give you about 20 ohms. If you are serious about the pocket nature of the antenna then make the coil smaller but beware of heat generated.

You can then use the amplifier to drive the antenna. I am guessing a voltage of about 40V pk-pk will be as far as you can go before the coil starts to heat up too much because of the I*I*R losses in the copper. 40V pk-pk means 20V pk-pk across 20 ohms (your dc blocking capacitor voltage will settle to 20V)means 1 A pk-pk which means 20W pk-pk of power dissipated in your coil. This is just a guess so start off low and keep going till it is too hot. There will be other effects reducing current, like the impedance of your capacitors and amplifier.

The coils inductance will not feature much at 7.83Hz, so this DC analysis should suffice.

Finally if the idea of this project is surround yourself in 7.83Hz signal why not run a few loops of wire around your whole damn property,say 1cm below the ground, just a bit of a soil covering to hide it. Or around the perimeter of a room you frequent often. and drive this loop with the antenna. Heat dissipation will be better with the spread out coil so you could increase the current in your copper wire.

Right disclaimer time. Now that I have told you how I would do it. I have no idea what such a device may do to you, your neighbors, etc. You should do some serious research into any possible ill affects before going ahead with any construction. Also ask the people who may be affected if they mind. Just common courtesy.

I am guessing the aim is a general feeling of wellness. Protection from electromagnetic "smog". Is this correct?

[DJPhil]

Excellent writeup by Feanor!

Just a bit to add to the wave synthesis part. The original signal isn't terribly pure and the extra peaks aren't a direct harmonic of the fundamental (see link below, spherical waveguides et. al.). Given all this, sine purity probably isn't a big issue. The XR2206 is a great chip but it's a bit expensive, and it's sine isn't particularly pure to begin with. At such a low frequency things get slippery, but you might get surprising results with a microcontroller. I haven't thought it through, but you should be able to use PWM and filter out the edges super easy given the low relative frequency. I'm still learning micros, but this seems ideally suited as using analog techniques to generate stable low frequency sinewaves is deceptively difficult in comparison.

Now an antenna that transmits 7.83 Hz is an unusual thing, and using a standard type like a dipole/monopole is out of the question, it will be too large.

And how! If you math it out you'll see that the wavelength is right about the circumference of the earth (depending on where you measure). That'd be one heck of a quarter wave dipole. 

The emissions in question are caused by the ionosphere and the earth's surface acting as an electromagnetic raquetball shaped waveguide. The sales pitch at the site above sort of butchers the physics, wikipedia has a much better writeup.

Hope that helps.

[Feanor]

I like the idea of using a micro to generate your control signals. You are right a good quality sine wave should be achievable at these low frequencies.

Another alternative that the microcontroler provides, is to use a full H-bridge to drive the coil.

There are heaps of resources out there on driving an H-bridge with a microcontroler. Microchips application section is one of my favorites. For your application simply replace the motor with your coil.

http://ww1.microchip.com/downloads/en/DeviceDoc/22259A.pdf

http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=2125&param=en026178

[scrat]

Since the signal at low frequency must be put into an LC resonant, a PWM fed H bridge will work greatly. A precise sine reference can be generated using a look up table (linearized to avoid using too much memory) or a simple digital resonant filter (it is really easy to implement).
@Feanor: a modulation should be required, if one wants to transmit some information with that thing.

@DJPhil: The wavelength is of course a multiple of the earth circumference to reach "natural" resonance, but as feanor said the antenna must be done by coil and capacitor

[Neilm]

I remember one circuit that consisted of two op amps and some resistors + capacitors. The output of one op amp was one of the inputs to the other and via versa. It would then resonate and produce two sine waves at 90 degrees phase shift. The frequency was fixed by the resistors and capacitors. I was given this at a job interview and had to work out what it did.

Neil

[DJPhil]

I remember one circuit that consisted of two op amps and some resistors + capacitors. The output of one op amp was one of the inputs to the other and via versa. It would then resonate and produce two sine waves at 90 degrees phase shift. The frequency was fixed by the resistors and capacitors. I was given this at a job interview and had to work out what it did.

Neil

Ah, the quadrature oscillator, useful for all sorts of things. For details, see figure 8 of TI's "Design of op amp sine wave oscillators". When I went looking for an adjustable Wein bridge circuit I found this writeup knocking around and it's been useful several times since.

[Wayneo]

I would just like to say thanks to you all for helping me so quickly, I didn't expect so many people to help

Here is a vid from an old 1982 BBC Horizon programme showing one of the Vitaset Devices working


(1/3 way through, shows the pocket device)

Wayne.

[DJPhil]

Interesting video. Gotta love the cold war.

Also, a nice cameo from the HP 1741A Scope, probably owned by at least a few here!
It seems like what they're saying is that if you override the 7.8Hz natural signal with something like 10Hz then your brain feels like it's been overclocked a bit relative to reality. Assuming this was true I could see how your brain would operate sluggishly. It's hard to believe this has a consistent or measurable effect, but either way it's a neat project that you could learn a good bit of electronics from.

When he turns on his widget you can see it build up over several cycles and it looks like it has a bit of crossover distortion (hard to tell). Odds are it's signal is generated by an analog oscillator of some sort like a 555 or LC. It's consistent (and some might say obvious) with the size and the time period, but it's good to see it in action nonetheless. Anyone with better eyesight than me want to try to work out the vertical amplifier setting on the scope to see the relative power? 

[Murphy]

What the guy was saying is that he suspects the Russian broadcasts were for mind-control and that the sine wave from the personal device overpowers the mind-control transmission making the person that carries it immune ... sounds ridiculous.

[the_raptor]

What the guy was saying is that he suspects the Russian broadcasts were for mind-control and that the sine wave from the personal device overpowers the mind-control transmission making the person that carries it immune ... sounds ridiculous.

Pseudo-science based on a poor understanding of the brain. My impression was that he was arguing that the "woodpecker" signal (actually over the horizon ballistic missile radar, one of whose antenna was near Chernobyl and is very impressive looking http://en.wikipedia.org/wiki/Russian_Woodpecker) was at a level comparable to those of "brain waves" of an agitated/impatient person. And therefore the Soviets must be using it to put Western populations off balance (of course ignoring the same signal would effect most Soviet citizens as well).

Of course the theory falls apart pretty rapidly with even a moderate amount of scepticism. Just because a brain emits a certain frequency range when undergoing one type of processing doesn't mean you can make the brain undergo that type of processing by exposing it to that frequency. That is like saying you can cause a computer to computer Pi by exposing it to the heat from another computer which is computing Pi. "Brain waves" are a side-effect of electro-chemical activity in the brain not a signalling method.

Of course at the time when this stuff was popular the CIA was convinced the Soviets had remote viewers and other psychic agents and worked on developing these methods themselves (the most they got out of it was figuring out how to induce "psychosis" in targets through the use of LSD).

[the_raptor]

I wouldn't rule it out being possible* shafri, just that the specific example doesn't pass a basic "smell test".

We can use focused magnetic fields to influence certain areas of the brain. But that is a very precise system compared to this Soviet "mind control" stuff. For actually inducing agitation in a target during negotiations etc I would think some kind of auditory based attack would be much more probable.

* I have gone back to uni to study physiology/psychology and the one thing that is clear from my studies is that we actually understand relatively little about the body beyond the macro level.

[Time]

All countries with cutting edge technology in their militaries are secretive.

[.o:0|O|0:o.]

This is what happens when you criminalise dope...  (I am just kidding)

I like the idea because it seems like a challenge to build this apparatus and there is always the chance to discover something new, but in my opinion, from what I know of the laws of physics, there is very little basis for the claims made.

While you may be able to disrupt normal brain function by applying fields near the skull, it is true that any unusual dose of anything can affect physiologies. An example with sound and maybe radiation: I have a fridge that turns on an off periodically...; the compressor pump is noisy. When it switches you notice it but then the droning sound sinks into the back of your mind; but as soon as the pump turns off, you realise the lack of noise and you feel more alert again (its a pain and I must sort it out).

So essentially, the only EM and sound waves that could be useful are those with the exact characteristics as the nuisaance ones, but inverted to perfom active filtering. No sound of 7-8 Hz or EM wave of the same frequency is going to somehow make the rest of the spectrum disappear. If you want to "protect yourself" get some sort of Faraday's cage, line the inside of your clothes with foil...

But the idea is unsound on so many levels. We also evolved under UV lighting and cosmic radiation, in the cold at night and the heat during the day, yet you don't expose yourself as much as you can to UV or cosmic radiation, nor do you make cold night even colder and the hot days even hotter, to amplify all the benefits!

Furthermore, brain waves and not sinusoidal. The brain is a collection of discreet neurons which upon reaching a threshold, pulse rapidly sending electrical signals to other neurons in clusters. Different thought activate a flashing of different cluster. There are basic frequencies that emerge from these activities, but it is the firing that is the cause of the theta waves, etc.

If you really wanted to disrupt the brain you would have to find a way of inducing currents that mimic these neuronal firing pulses.

The sceince you are basing all of this is very outdated at best, and I fear the only thing you are propagating with this design (if you are going to market it) is ignorance and superstition.

If it is done purely for the fun and challenge then thats cool.

.o:0|O|0:o.

[Murphy]

Those crazy Russians ... always up to something! =D

[Neilm]

even if you dont see it doesnt mean it doesnt exist! (quoted from a cartoon movie)

I prefer "Just because you are paranoid doesn't mean there isn't an invisible monster about to eat your face off"


Neil

[Jack Hummer]

www.betar.com

http://www.thatte.net/frey.pdf
http://www.google.com/patents?vid=3951134

CIA knows how to use mind control.

[David Aurora]

Do these things run on regular AA's or strictly snake oil?

[G7PSK]

I would be carefull trying to build a mind eraser. It might just work when you turn it on---------------Whats this box in my hand?

[Jack Hummer]

Yes it's snake oil, just like Tesla.  Tesla was pimping snake oil.  Don't use it.  Otherwise look up brain entrainment.

[David Aurora]

Yes it's snake oil, just like Tesla.  Tesla was pimping snake oil.  Don't use it.  Otherwise look up brain entrainment.

Unless I've missed something, I don't think Tesla's thoughts on the Earth's resonance has any connection to people selling personal resonators to people who, let's face it, most likely also believe in the healing power of crystals.

[Jack Hummer]

I don't know what crystals you are talking about.  The original post is alluding to saturating yourself with
SR so that you won't be mind controlled.  This patent is talking about zapping people in the head with
two different frequencies, the difference between the two frequencies relates to the dominant frequencies
the brain uses.

http://www.google.com/patents/US3951134?printsec=abstract#v=onepage&q&f=false

To counter it the idea is to saturate yourself with Schumann's Resonance so you can't be mind controlled.
SR will dominate the influence to your brain instead of the wood pecker 10 hz or pushing two frequencies
to your head.  Who has an idea to stop your brain from being influenced by external emf? 

[David Aurora]

I don't know what crystals you are talking about.  The original post is alluding to saturating yourself with
SR so that you won't be mind controlled.  This patent is talking about zapping people in the head with
two different frequencies, the difference between the two frequencies relates to the dominant frequencies
the brain uses.

http://www.google.com/patents/US3951134?printsec=abstract#v=onepage&q&f=false

To counter it the idea is to saturate yourself with Schumann's Resonance so you can't be mind controlled.
SR will dominate the influence to your brain instead of the wood pecker 10 hz or pushing two frequencies
to your head.  Who has an idea to stop your brain from being influenced by external emf?

Hahaha, you're trolling, right??!! 

And yeah, I understand the ideas behind binaural beats. I've even played with it a bit years ago to see what it was like (kind of trippy, but nothing mind-blowing). I'm not remotely concerned about being "zapped in the head" with this shit anytime soon haha

[leo head]

all of who go into space have this device aboard cuz a human cant live without it they go  mental ... other frequenties that are found on the 432hz scale music could have more good benefits to suroundings  if only all our wifi modems and all other data cariers  used this frequenty this world woudl have a lot of healthier People but i have no knowledge on what frequenties data schould be caried  have a nice day yall wizzkids       tesla we miss guys like u

[vk6zgo]

AAAAARRRRRRGGGGGHHHHH!!!!!!