posted on Aug, 30 2009 @ 05:05 AM
ELF is simply extremely low frequencies. A device to generate them need not be huge, but an affect antenna to radiate them directly would be.
ELF is used for submarine communications because it penetrates salt water more effectively than higher frequencies. The low frequencies require
extremely large antennas to transmit them but facilities do exist. The low frequency also implies very low transmission rates. Not much more
information than surface so you can receive more information could be transmitted in a timely manner.
There is another way to generate ELF waves and HAARP can exploit it. That is by hetrodyne. Anytime two frequencies are introduced into a non-linear
medium, a sum and difference frequency are produced.
So HAARP can transmit two shortwave signals at high power into the ionosphere. The ionosphere is somewhat non-linear and will mix these two
frequencies producing a sum and difference component.
Let's say you transmit 12,000,000 Hz and 12,000,007 Hz, mixing will then produce 7 Hz and 24,000,007. The first component being the most
interesting. And the ionosphere, being a conductive layer that surrounds the Earth, is a large enough conductor to be an effective antenna at these
frequencies. Add to this the effects of the Schumann resonance and there may be some reinforcement and amplification of the 7 Hz component.
It has been shown that a sufficiently strong external magnetic signal can cause brain wave entrainment, but whether HAARP could create a strong enough
field for that to happen is beyond my knowledge. This isn't something that could cause specific thoughts, rather something that could alter one's
general state of consciousness, how alert or not one is, mood to a degree, etc, if it were sufficiently powerful.
Then it couldn't be focused very narrowly owing to the wavelengths involved, so if it had any influence, it would be over a fairly large area.
HAARP doesn't directly transmit ELF signals but this hetrodyne method could be used by HAARP to produce them. How efficient the ionosphere would be
in this process depends upon the degree of non-linearity and there isn't much evidence that it is very high or commercial short-wave broadcasts would
also cause hetrodyning and undesired interference. But then commercial broadcasts aren't as highly focused or at nearly the power levels used by
HAARP, and the ionosphere may become more non-linear at higher signal levels, say power levels sufficient to actually increase ionization of the
ionosphere. There is evidence that HAARP is sufficiently powerful to do this as very small artificial auroras, observable only with the aid of a
telescope, have been experimentally created with HAARP.
I could also see where sufficiently high power levels could be used to manipulate weather but I am skeptical that the required power levels could be
reached by any man-made device given that solar flux is around 1.5 kw per square meter, and approximately 600 watts of this is absorbed by the upper
atmosphere. Over an area of any significant size that's a huge amount of power to compete with.
[edit on 8/30/2009 by Nookster]