Advanced Walkie Talkie

Okay, so the underlying assumption here is that our brains receive stimuli from each other, we just aren't aware of it, and we tune it out over time.  Basically we are both sending and receiving communication at this point all the time, we are just no longer aware of it.  My closest indicator that this is already happening is with twins, but broader energy shifts have been noted, where people sensed something before they knew about it (some sources say the WWI Armistice was this way, where people just knew when it happened, but wouldn't consciously find out until a little while later).

Anyway, my assumption then is that we all have this sense but are largely unaware of it.  Now while we may not be able to suddenly regain control of a muscle we've never used, the "orifice" in a sense, would still be there.  Since we're dealing with the brain, the main skill if which is adapting itself based on external conditions, no "physical" change needs to occur.  My thought is what if you imagined this location surrounded by the mental construct of a box, EM proof (our brains already do this somehow, so that's not a stretch), and lining the inside of the box are sensors, designed to resonate when struck by one anywhere along the the entire range of frequencies we're looking at, such that each one fires when hit by a frequency.  Alternatively, you could set it up like an FM radio receiver.  Now a wire in the walls of the box transmits this information to the outside, where the brain then works out interpreting it.

This described structure would be the receiver, similar to the ear.  Once this is established the next step is conceiving of/making the transmitter or mouth.  Now this would be in a different location, but possibly right next to the receiver.  If right next to the receiver, a reflective surface could be used between the two, or if they are connected, in a double parabola shape out from the one point.

Regardless of the method required, the goal is to communicate a consistent message within a frequency range into the point.  Brain waves only oscillate around 100 times/second, but this doesn't mean the possible frequencies are limited, it would just require more precision to meaningfully communicate with an individual, because you'd need to isolate a frequency that no one else was using.

This necessary isolation might make this process significantly more difficult or easier.  If people are currently communicating at a specific frequency without realizing it, and have simply picked a random one, there is likely to be a lot of static.  If instead people are not using a particular range, but are simply telegraphing on a wide range of random frequencies, you should be able to limit the static, once you've connected, by further limiting the band (remember, there is no translation from brain power to the physical world in this process, so precision should not be a problem once you have a goal identified).  The last option is the one I believe in, which is that we were paired from the start, and that this pairing tunes us to our natural frequency.  In this way we'd always have a line of communication to our soulmate, even if we did not realize it- sharing dreams and the like when the rest of the mind shifts under our feet as we sleep.  If this is the case, flipping the switch should cause a single clear signal to become apparent, and possibly even a clear call from the darkness to be heard, if it turns out that she has been waiting for me, as I have been recently considering.