Some forum members have been discussing possible ways to defend against various types of radio waves (in this very topic), but I get the impression ELF would be extremely difficult to defend against -- if not downright impossible with what is available to us.
Regarding the (human) secret government protecting themselves, several possibilities come to mind:
1. Regardless of whether the arrays are located above or below ground, the ELF radio waves could be transmitted up into the ionosphere. From there, the process could be specifically configured so that when the ELF radio waves cover a particular region, they would be strong enough to affect those on the surface, but not strong enough to permeate back through the earth to those residing in deep underground bases (1km and beyond, for example).
2. The secret government have technology that is allegedly thousands of years ahead of the rest of the human race, so with that in mind it is feasible that they may have adequate protection after all.
3. The secret government could have easily been conned into thinking they are protected by 4D STS, when in fact 4D STS couldn't care less. The ELF radio waves affecting the general population would, in turn, affect the secret government. This would work in favour of 4D STS; not only would the general population be at the mercy of brain wave entrainment, but so would the secret government; ensuring their loyalty to 4D STS.
4. The secret government might collect in one area and designate that area as a no-ELF zone. This would be the easiest solution to avoid being affected, but also not a very smart one. It would only take one direct hit from a large meteor to destroy them and ... bam! It would be in their best interests to spread out and increase their chances of survival (and continued rule over humanity).
Charles said:
... HAARP radiates high frequency (ELF is only secondary). Thus, if an identical system would be placed underground the radiation would be absorbed. Direct production of ELF from underground would still be feasible I think.
Hmm ... well, could it be that there are ELF transmitters underground, and that HAARP and similar arrays above ground are mostly for testing purposes? Another thought, high frequency capabilities could just be a distraction.
Charles said:
All three arrays, placed in Alaska, Greenland, and Norway have a high degree of latitude, and are close to the North Pole. Maybe they are counting on a southern attack of a possible swarm so that they will remain in the shadow.
Interesting observations there. This never occured to me, but this is presuming there are not arrays in the southern hemisphere we don't know about. Or, more likely, having them in the northern hemisphere could simply be for practical purposes (easier to research, test; or perhaps global coverage is better achieved from the northern hemisphere due to higher ionisation levels).
I say this because counting on a southern attack would suggest they have been forewarned by 4D STS. However, the future is fluid and trying to predict where and when the meteors would strike would be an exercise in futility. Especially if the comets are meant to be coming from all directions, as the C's suggested below:
Cometary Showers: Four Horsemen of the Apocalypse?
Q: (A) Now, spirograph suggests that these comets will not come from one direction, but from many directions at once. Is this correct?
A: Very good!!!
Q: (A) Okay, they will come from many directions...
A: But, initial visibility presents as single, solid body.
Then again, 4D STS could have simply given a phony or unreliable forewarning to fool the secret government into thinking they are really being taken care of and that they really have been assured a place in the chain of command (post-cataclysm). When in reality, they will only be assured a place for as long as 4D STS still have a use for them.
A further thought on arrays surviving comet clusters:
a) there are identical arrays already built in 4D
b) the arrays will be "shifted" by 4D STS into 4D when necessary
c) the arrays will not be used in 4D at all, so it does not matter whether they survive or not.
The c) option does not seem likely. I recall the C's mentioning that HAARP (and/or other arrays) was intended for use in 4D also. Apologies though, I could not find the exact reference.