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--- home:special:effects_of_emf:measuring [06.26.2018] – [Measuring Radio Frequency Radiation] sallieq
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-====== Measuring Radio Frequency Radiation ======
-//related articles//
-  * [[home:special:effects_of_emf:rf_overview|Radio Frequency Radiation]]
-  * [[home:special:effects_of_emf:measuring:meters|Measuring Devices]]
-  * [[home:special:effects_of_emf:whitezones:domestic|Modifying Home Environment]]  <//still under development//>
-===== Exactly What Is Affecting You? =====
-EMF: electrical/magnetic fields that apparently more strongly affect those with Th1 illness.
-  * Bacteria have been shown to infect the Schwann cells that form the protective myelin wrapped around the nerves.
-  *
-  * The Vagus nerve has been shown to modify autonomic body processes, including white blood cell production in the spleen.
-CWS is a capacitive wave system designed to provide a very pure, ultra-low power signal that produces unexplained bioeffects in living systems.
-The Capacitive Wave System (CWS) was developed by the Autoimmunity Research Foundation in 2014 as a research device for experimental use by members of our research site struggling with the symptoms of chronic disease.
-  * Capacitive wave systems appear to be modifying neurological symptoms in persons with Th1 illness.
-  *
-  * These bioeffects of the CWS cannot be explained with current understanding of human response to EMF.
-A new research initiative of the Autoimmunity Research Foundation is hoped to be complementary to the protocol for those with more difficult neurological distress.
-This research question was asked with the understanding that it is not generally considered possible that the 25 nanowatt power (-100dBm at 1 meter) produced by these systems would have any effect at all on the biological function of the human body.
-This research is likely to be of benefit also to those who have discontinued the Marshall Protocol or not commenced it.
-[[http://schwannsongs.org/]] was a site developed by the Foundation to allow for discussion of the results of the CWS research by those not involved with the Marshall Protocol, along with members who are. Those testing the use of the CWS discussed their observations on that site (as well as in their own progress thread in marshallprotocol.com, if on the protocol).
-The general observation is that healthy people do not respond to exposure to the Capacitive Wave Systems in the same way that those who have chronic symptoms of illness. Healthy persons will report it "did nothing" when they were exposed to it.
-Responses by our members, who by definition are facing some type of chronic symptoms, varied greatly. Some individuals had an immediate and negative response. Others found it had a subtle, but persisting effect in improving idiopathic symptoms that had been difficult to resolve using standard approaches.
-Unexpected Discovery
-An unexpected discovery came with the observation that those with a high level of Electrosmog in their home or work environments were more likely to have a negative effect from exposure to the CWS.
-Some found ways to reduce the EMF power levels below -55dBm and reported changes in their symptom levels as they did. Research into optimal methods of measuring and mitigating Electrosmog effects is ongoing.
-Those members that have not yet addressed the high levels of Electrosmog in their environments, especially the environment during their sleep hours, are most often the ones that also report an inability to tolerate exposure to the CWS.
-==== Without Measurements You Don't Know ====
- [[http://www.ehs-mcs.org/visuels/1390928073_18_1_Zoom.jpg|device frequencies]]
-Measuring your environment is the only way to accurately identify the sources of EMF so that you can begin the process of learning what is affecting you and how you respond to the many different types of sources of radio frequency radiation (RFR) commonly present around us today.
-Professor Marshall has engineered a device he calls the Sniffer, now in Beta testing by ARF volunteers
-<blockquote>Low sensitivity setting silent until -47dBm then builds warning from there.
-High sensitivity silent until -57dBm, building from there. High sensitivity also has advanced pulse detection to catch fast single pulses (eg an airport or ship radar scanner).
-The red "Evacuate" light flashes starting at -17dBm, a 1000:1 range (30dB) in Low sensitivity.
-The unit should remain silent. If the red light says "Evacuate" then it really means "Evacuate." Even healthy people will have dulled brains at those levels.
-Trevor Marshall Jun 7th, 2016</blockquote>
-==== Don't Guess ====
-When we start to guess at what could be affecting us, our errors can lead us into wasted effort and loss of credibility. It's critically important that we fully evaluate every source of RFR we are exposed to so that we can approach mitigation effectively and intelligently.
-===== What You Are Looking For & How Meters Help =====
-Invisible waves require special tools to measure power and frequencies so you can find out what is in your environment and then take sensible steps to mitigate the problem sources.
-  * [[home:special:effects_of_emf:measuring:meters|Measuring devices]]
-these tutorials may help with understanding the theory
-Khan Academy:
-[[https://www.khanacademy.org/science/physics/mechanical-waves-and-sound|Mechanical waves and sound]]
-[[https://www.khanacademy.org/science/physics/mechanical-waves-and-sound/mechanical-waves/v/amplitude-period-frequency-and-wavelength-of-periodic-waves|Amplitude, period, frequency and wavelength of periodic waves]]
-__**Approximate frequency ranges**__
-DECT: 1925 span 10
-WiFi low band: 2.4 - 2.5GHz
-WiFi High band:  5.47 - 5.725 GHz
-Cellphones low: 700-900Mhz
-Cellphones 3G: 1700-2100MHz
-UMTS: 1900-2100MHz
-Cellphones 4G: Everywhere. There are around 20 different 4G bands
-TV: 54-216MHz and 470-890MHz
-FM: 88-108MHz
-SmartMeters  915 span 26
-==== Antenna ====
-Antennas are needed to pick up signals for the meters
-The antennas supplied for use with both the Cornet and the RF Explorer are not sufficient: more accuracy is necessary to measure the emf which affects our cells
-=== Handling & Usage Tips ===
-  * [[home:special:effects_of_emf:measuring:meters:using|Guidance for using measuring devices]]
-=== Where to Buy ===
-Amazon and Ebay may supply some of your needs
-  * [[home:special:effects_of_emf:measuring:meters:buying|Guidance for buying measuring devices]]
-=== How it Works ===
-<blockquote>The directional antenna covers 850MHz to 6GHz, the microwave region. That includes cell phones, DECT phones, WiFi and smart-meters but not FM, TV, AM or shortwave radio. The whip picks these up, especially when extended. By collapsing the whip down to just one section, you limit the sensitivity of the whip to (approx) 900MHz to 6GHz, or the same as the directional log-periodic. But the directional antenna gives an extra 7dB of amplification when it is pointed at the source of the radiation. You can switch the sound on the Cornet and this also helps you distinguish what the signals are (FM stations are totally silent, for example).
-Trevor Marshall, PhD</blockquote>
-<blockquote>a -50dBm signal is 316 times lower in amplitude than a -25dBm signal, which most definitely is a big improvement! :)
-Trevor Marshall, PhD</blockquote>
-<blockquote>As a scientist I want to be able to measure down to 'absolute zero' which is effectively 'below 390 degrees Kelvin'. I am still at 690K even with the preamplifier :X You don't need to go that low. As Amelie found in her canyon, once you get so the Cornet audio is silent at -65dB with the whip, you are getting very close to where you need to be. I am building the preamplifiers so that I can measure a little lower with the Cornet. Obviously the RFexplorer, with its smaller noise bandwidth, can go much lower, down to about -110dBm with narrow-band signal sources.
-Trevor Marshall, PhD</blockquote>
-==== CORNET Meter ====
-Basic usage tips
-<blockquote>5 metres from a microwave the signal is still too strong. Don't put your Cornet near the microwave, but use it to measure the signal at the other end of the house. I think you will be surprised how powerful those ovens are.</blockquote>
-=== What You Can Learn From Readings ===
-The CORNET meter is very good at providing a very accurate single number for the current peak power over the entire spectrum from 1Hz to 8GHz. It also provides a small window displaying a moving history of the most recent peak power readings.
-While you don't know the frequency of the source of this peak power and you also don't know what other sources may be present at near the same or lower power levels, it gives you an immediate assessment of your environment's level of radio frequency radiation (RFR).
-=== What You Can Learn By Adjusting the Antenna Length ===
-By putting the adjustable antenna on the CORNET meter and taking measurements at the various lengths, a general sense of the range of frequencies present in your environment.
-=== What You Can Learn From Audio Output ===
-While the CORNET meter only provides a single number for the current peak power over the entire spectrum from 1Hz to 8GHz, it has another method of quantifying the types of signals in your environment - sound.  Different types of signals sound differently on the CORNET:
-	• Television Broadcast Antennas - constant lower-pitched buzz, similar to 60Hz
-	• Cell Tower Antennas - constant higher pitched whine
-	• DECT Phones - continuous clicking
-	• WiFi Routers - non-continuous clicks
-	• 4G Modems and Antennas - pulsed sputter or "raspberry" (often at extremely high power levels)
-=== Limitations ===
-The CORNET does not catch the fast pulses of 4G. The Foundation's sniffer does.
-=== Manual ===
-[[http://www.emfdetector.sg/wp-content/uploads/2011/11/ED85EXUserManual.pdf|Cornet ED85EX Manual]]
-Rico posted  guide [[http://www.australsurveillance.com.au/BUGDET02-MANUAL.pdf|ED-8 quick user's manual]]
-was easier to view
-==== RF Explorer ====
-The RF Explorer is a spectrum analyzer.
-<blockquote>
-This is the device which works best for portable spectrum analysis:
-[[http://www.amazon.com/dp/B00GM72CGU|RF Explorer and Handheld Spectrum Analyzer]]
-You need this 3G combo version, with the 15-2700 MHz wideband section, as well as the 220-960 that works a little better on Smart Meter radiation.
-Here is the website of the designer: [[http://micro.arocholl.com/|RF Explorer]]
-This is an open-source project. Both the firmware and the interfaces to your Desktop software are open-source community based projects. The hardware is built by Seeed studio in China.
-There have been rumors that a new version with a 6GHz upper frequency limit will be released within a few months, but 2700MHz covers all the cell-phone 4G allocations
-//Prof Trevor Marshall  Dec 2nd, 2014 //</blockquote>
- Use FAST filter and PEAK HOLD on an RF explorer to explore digital signals.
-<blockquote>
-Here is where I usually set up my Rfexplorer when surveying a new site:
-G/4G frequencies: Whip antenna fully collapsed
-Center Freq: 2200
-Freq Span: 600
-Module 15-2700
-Calculator: Max Hold
-Top dBm: -30
-Bottom dBm: -100
-Iterations: 005
-Offset:0
-Units: dBm
-Draw Mode: Vectors
-Marker: Peak
-DSP: Fast
-This setup covers 1900MHz to 2500MHz and shows you DECT phones at far left, WiFi at far right, with the main 3G/4G bands in between. For looking at DECT in particular I use Center Freq:1925 Span:10. For just WiFi I use 2450 span 100. There are also some less active 2G/3G/4G bands between 700MHz and 1000Mhz, and some 4G between 2500 and 2700Mhz.
-//Trevor Marshall, PhD//</blockquote>
-Professor Marshall, .. is happy with using this antenna with the RF Explorer as well:
-    Superbat 5dbi 700-2600Mhz 4G LTE Omni Directional Antenna
-<blockquote>The small (WiFi) antenna that came with the RF Explorer was no use at all, and the extendable antenna has a coil in its base which stops it working properly at high frequencies. The 'blade' antenna I suggested will cover all the cell-phone and WiFi bands reliably, and the whip covers from 110MHz (extended) to 2GHz (when collapsed).</blockquote>
-The antennas which came with the RFexplorer will give you a good idea what the signal strengths are, but when you want accurate measurements you will need to have a reasonably decent antenna.
-=== Where to Buy ===
-  * [[home:waves:measuring:meters:buying|Sources for buying]]
-=== Manual ===
-[[http://j3.rf-explorer.com/download/RFExplorer_UserManual_v1_11.pdf|RF Explorer User Manual]]
-Basic usage tips
-See [[http://micro.arocholl.com/index.php?option=com_content&view=article&id=80%3Agetting-started-with-rf-explorer&catid=40%3Aarticle&Itemid=65|Getting started with RF Explorer]]
-There is an important key to charging the device:
-... the power switch must be ON when it's plugged in, or else it isn't charging ...
-=== What You Can Learn From Readings ===
-<blockquote>Using the RF Explorer, I was able to speculate that most of my highest signals are in the 100-500MHz bands. Over the hill from my home there are all of the types of antennas for the signals described below. (Except for the airport radars, those are over a mile away, but still awfully close)
-From: Very high frequency (VHF) and Super high frequency (SHF)
-  * Common uses for Very high frequency (VHF) are FM radio broadcasting, television broadcasting, two way land mobile radio systems (emergency, business, private use and military), long range data communication up to several tens of kilometres with radio modems, amateur radio, and marine communications.
-  * Air traffic control communications and air navigation systems (e.g. VOR, DME & ILS) work at distances of 100 kilometres or more to aircraft at cruising altitude.
-  * VHF was used for analog television stations in the US, and continues to be used for digital television.
-  * Super high frequency (SHF) is the ITU designation for radio frequencies (RF) in the range between 3 GHz and 30 GHz. This band of frequencies is also known as the centimetre band or centimetre wave as the wavelengths range from one to ten centimetres.
-  * These frequencies fall within the microwave band, so radio waves with these frequencies are called microwaves. The small wavelength of microwaves allows them to be directed in narrow beams by aperture antennas such as parabolic dishes, so they are used for point-to-point communication and data links[1] and for radar.
-  * This frequency range is used for most radar transmitters, microwave ovens, wireless LANs, cell phones, satellite communication, microwave radio relay links, and numerous short range terrestrial data links.
-I suspect that the building materials of my walls (stucco on wire mesh) block some waves. Especially those in the microwave (SHF) range.
-//
-Joyful//</blockquote>
-==== Access to Meters ====
-  * [[home:special/effects_of_emf:measuring:meters:buying|Guidance for buying measuring devices]]
-=== When to Buy v.s. Sharing ===
-- The following meter is so inexpensive it may be the choice for those who have limited means but no wish to share
-<blockquote>I think I have been too harsh on the DT-1130 "Electromagnetic Radiation Detector"
-When I took out the switching power bricks powering all my computer equipment (and routers, etc) the DT-1130 now stops beeping whenever I place it towards my computer screen and laptop. It did sense the change to a cleaner environment. It used to beep anywhere within a foot of either device...
-But it still beeps whenever near power cords (even though they only show 30GS units).
-When it was beeping near my routers - that's OK, I thought, they have computer chips in them.
-But this morning I installed shielded ethernet cables. Now it no longer beeps on the routers. Hmmm...
-I think the problem I had with the DT-1130 initially was that my environment was so noisy that it beeped at everything (which it did). So the meter was not much use for diagnosis of individual devices. Bat as I eliminated each source of trouble, the DT-1130 has gradually stopped complaining about them... Hmmm... Not bad for $10, I suppose. But it is going to make a lot of noise until you get your environment reasonably clean...
-//
-TM//</blockquote>
-=== Local Groups ===
-- A number of groups have formed to pass a meter about within the group.
-There is one in the USA/Canada, one in Europe/UK, one has started in Australia
-===== Notes and comments =====
-===== References ======