Big E’s


The Big “E”s…EVP (Electronic Voice Phenomenon) and EMF (ElectroMagnetic Field). Arguably, the most discussed evidence. I combine them here since they are related within the subject of the EM Spectrum.

To get to root of the subject, there is no scientific basis behind EVP and EMF having any relationship to the unusual events we seek to explain. Science, as we understand it, tells us any event requires energy to occur. When an event occurs, we should be able to measure the energy associated with the event. Ever since our technology evolved to where our voices could be recorded and played back, there have been efforts to contact those who have died. Similarly, ever since technology could measure the energy associated with motion, there have been efforts to measure the energy of events caused by unseen forces.

Limitations of technology:

Perhaps one of the most important points here is to understand the capabilities of the technology used for our investigations. Read and research the specifications of a particular piece of technology.

EMF meters detect/measure a very narrow range of frequencies. Most are designed to determine if consumer electronics and household wiring are emitting excessive fields that may disrupt the function of other devices or effect people physiologically. None are, nor can they be, designed to detect energy we have not defined. Even custom DIY projects are limited to a narrow bandwidth. Lower frequencies require larger sensors; the simplest of which may be comprised of several miles of wire. Search “antenna theory” for more information.

Audio recorders tend to come in two varieties; one for simple voice dictation and the other for music. The audio bandwidth they will record can be significantly different. Those designed for the human voice may have a narrow bandwidth as part of the effort to eliminate “noise” from the recording. Even the headphones and speakers used to review audio will change what may be overlooked. Be sure to understand the audio bandwidth a given set of headphones or speakers can reproduce accurately. If the bandwidth is unknown or narrower than 20 Hz to 20 kHz, valuable audio information may be lost.

A few links for useful information:

Exceptional articles from Sparc Para Analytics:

More info on EMF:

Skeptic thought on EVP:

Digital Recording Technology:

Rob Hillstrom

Rob Hillstrom

Director / Chair Science at TEPI
Paranormal: Somewhat cliché but, my experiences began at a young age though I don’t recall making the “paranormal” association until the age of 9 when my grandmother died and returned for a visit. Through the years, I have given many phenomena more attention; from subtle dream images to apparent physical contact from “unseen” sources. I have been involved in independent research/study and investigation for about 30 years and began using some equipment about 20 years ago. I have been working with the Colorado based TEPI team since 2010. As a science oriented investigator, I am a bit of a contradiction. I believe the experience more so than the evidence. Simply because there can be many plausible explanations for most evidence. The experience on the other hand, can sometimes be very complex and difficult to explain easily. Professional: I have a Master of Science degree that essentially qualifies me to manage a multi-discipline team in their efforts to accomplish technical activities. (If I say more the MIB might show up.) My engineering background is primarily electronics but includes mechanical, astrophysics, and some aspects of thermal, optical, and audio. Previous careers were medical including paramedics and medical device technology (design, manufacturing, and training medical staff). I also dabbled heavily in photography before the wide spread use of digital imaging. Ideological: I was raised Presbyterian but allowed to find my own path. I studied Zen for a short time and explored many other faiths. In my late teens I attended a seminar on the subject of Quantum Physics and how it relates to our mind and consciousness; this was the turning point in my belief system. I did not become a scientific skeptic, I simply began to view nearly everything differently. I removed definitions I had learned and replaced them with relationships to my personal experiences and observations. Things once clearly defined as paranormal now had a plausible spin to them. Personal: In my spare time I write dark music, dark poetry, and horror/science fiction stories.
Rob Hillstrom

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