- What is the real difference between a single axis and a triple axis gaussmeter?
- I have found strong readings on my meter. How do I find the source of these fields?
- How do I measure a cell tower??
- How do I measure the radiation from my cell phone?
- I want to do paranormal research. Which meters are appropriate?
- I think I am being electromagnetically harassed. What equipment do I need?
- At what distance from a source of field can I use a meter?
- I'm electrically sensitive. To avoid shielding everything in sight, how can I find out what types of EMF I am most sensitive to?

What is the real difference between a single axis and a triple axis gaussmeter?

Because magnetic fields are oriented in space, a sensor will only detect the field properly if it is aligned with the field. A single axis meter has only one sensor in it. Therefore to get a correct reading with this type of meter, you must slowly rotate the meter until you find the maximum reading. This will be the correct reading. If the meter is turned 90° from the maximum reading, it will read nearly zero. It is easy to understand how it is possible to get a lower than actual reading if the meter is not properly aligned.

A three axis meter has 3 sensors in it, all aligned at right angles to each other. Therefore, this type of meter is always correctly aligned and no rotation is required to get a correct reading. This type of meter takes less time to use but generally costs more that its single axis counterpart. See 3-Axis Digital Gaussmeter and Trifield Meter for examples of 3-axis gaussmeters.

I have found strong readings on my meter. How do I find the source of these fields?

Whether is it electric fields, magnetic fields, or radiowaves, the source of the field will always be in the direction of the strongest signal. It is critically important to avoid being fooled by thinking that the meter points in the direction of the source.

A perfect example of this phenomenon involves powerlines. You should remember that the direction of magnetic field lines around a current carrying wire is circularly perpendicular to the wire. So alongside the wire, the field lines are vertical, while underneath the wire, the field lines are horizontal. The proper orientation of a single axis meter may point the meter at the wire, or straight up and down, or even horizontal, depending on the orientation of the sensor in the meter and the position of the meter relative to the wire. Furthermore, the orientation of a 3-axis meter is irrelevant to the reading, so it could be pointing in virtually any direction and still give a correct reading.

Only by moving the meter bodily toward, then away, from a suspected source can one determine the location of the source.

How do I measure a cell tower?

There is much concern about the health effects resulting from microwave radiation from cell tower and radio antennas. Biological effects have been clearly established at levels well below the government exposure limits.

However, people are often surprised to learn that the strength of the signal from a cell tower or radio antenna is extremely small if you are any distance at all from the antenna. At 100 yards, the signal strength is well below the sensitivity of most meters. In order to measure these signals, you need an extremely sensitive meter. You also need a meter which can accurately process a digital signal (which is different from an analog signal in the way it interacts with a meter), and it would be useful to have a meter which is directional, so that you can take a measurement of a specific tower, without interference from extraneous sources behind or to the side of you.

For these reasons, there is only one best meter we recommend for measuring antenna: HIGH FREQUENCY METER. It has the sensitivity (10 picoWatts/cm²) to measure an antenna miles away, process analog or digital signals correctly, and it'S antenna is directional.

Of the low cost meters, the MicroAlert may be useful in some circumstances. This device is somewhat directional and it is somewhat more sensitive than the other low cost RF meters (1 microwatts/cm²). Note that is not a true meter, but rather an alarm to alert you when you are exposed to radiation above the threshold of the meter (somewhat similar to a radar detector in your car). Even so, it can be useful for determining if you are in a microwave hot spot and if your shielding methods are effective.

The Electrosmog Meter is probably the best pick for non-technical users. It is very easy to use, very sensitive ( down to 0.4 nanoWatt/cm²) and gives a calibrated, digital readout of field strength.

How do I measure the radiation from my cell phone?

This is perhaps the trickiest measurement you are likely to attempt. The reasons include:

• Because the phone is used directly against the head, the only valid measurement of cell phone radiation is close up to the phone. At cell phone frequencies, the NEAR FIELD is on the order of a few inches. Therefore measuring the field accurately within about 2 inches of the phone requires a NEAR FIELD probe. Most low cost meters are FAR FIELD meters.
• Most cell phones today use digital signals. An analog meter may pick up some radiation, but it will never give a correct reading due to its inability to process the digital signal properly.

There are NEAR FIELD probes which can be connected to a spectrum analyzer for a cost of $30,000 or more. And of course, there are $100,000 SAR machines for doing SAR testing. But what can an ordinary person use to measure the output from his phone or check the effectiveness of a shield?

We recommend the ScanProbe. For about $200, you can use this NEAR FIELD meter to check all surfaces of your phone and establish where the hot spots are. The ScanProbe-C can be attached to an oscilloscope or DMM to get even more precise information about the strength of the field.

I want to do paranormal research. Which meters are appropriate?

There are 3 main categories of meter that are popular among paranormal researchers:

AC Gaussmeters: The hands down favorite is the 3-axis Trifield Meter . With its fast reaction needle gauge and 2 sensitivity scales, this meter is so easy to use right out of the box. Other choices include the 3-Axis AC Gaussmeter for high accuracy, the Single Axis AC Gauss Meter for economy, and among the low cost single axis meters: GaussMaster offers an audio tone, and E.L.F. Zone offers lights which are very useful in the dark.

Remote Temperature Scanner: The easiest way to check for cold spots is the Remote IR Thermometer. Complete with a laser pointer for good aim, simply point and shoot to get instant temperature readings of surfaces 10, 20 or 50 or more feet away.

Exotic Meters: Some researchers believe that paranormal activity can ionize the air. This phenomena is easy to measure with the Air Ion Counter. Radioactivity can be affordably checked with the Monitor 4. Changes in DC electric and magnetic fields can be picked up with the Natural EM Meter, which also offers an audio tone for low light conditions. A motion detector can be used to remotely detect moving objects, opening doors and windows, and the appearance of hot spots.

A great book on ghost hunting tools and techniques is Ghost Tech by Vince Wilson.

I think I am being electromagnetically harassed. What equipment do I need?

This is a very tough question to answer. Harassment could take many forms: chemicals, ions, sound, microwaves (what frequency?), light, covert technologies, and so on. There is no one meter that can measure all these different phenomena. Furthermore, your symptoms may be due to something else altogether such as allergies, migraines, high blood pressure, or a thousand other conditions.

If you are serious about determining if you are being intentionally exposed to electromagnetic fields, then the logical place to start is with meters which offer the widest range of sensitivity.

One low cost possibility is the combination of the Trifield Extended Range Broadband Meter plus the Natural EM Meter will cover the whole range from DC to 2.5 GHz. This combination offers the ability to distinguish if the offending field is AC or DC, and whether it is electric, magnetic or microwave.

If you want to be able to distinguish a specific microwave signal from the background, your will need a spectrum analyzer. The RF Signal Strength Analyzer will tell you which signals are present, what their frequencies are, and give you an idea of how strong each signal is. By watching the analyzer, you may be able to correlate the appearance of a specific signal with the onset of your symptoms. This type of information will help you zero in on the source and be a great help to law enforcement authorities.

At what distance from a source of field can I use a meter (that is, what is the range in distance of a meter)?

All meters have a range of exactly zero feet. This means that all gaussmeters, electric field meters, RF/microwave meters, etc. can only measure the strength of the field AT THE LOCATION OF THE METER.

What distinguishes one meter from another is the sensitivity. In other words, what is the smallest field strength that the meter can detect? A gaussmeter with a sensitivity of 0.1 mG is more sensitive than a meter which can only detect down to 1.3 mG. While the meter which is more sensitive can be successfully used further away from the source of the field, it is still only measuring the field at the location of the meter.

So the next question is: if you have a meter with a certain sensitivity, how far from a source of field is it useful? The answer to that depends on 3 factors:

1. what is the strength of the field at the source?
2. at what rate does the field decrease with distance (1/d, 1/d², 1/d³ etc.).
3. what is the pattern of radiation from the source? (You may remember that the magnetic field is concentrated at the poles of a magnet. Some sources may have symmetrical field patterns, some may not.)

Without knowing a great deal about the nature of the source, it is impossible to determine at what distance a given meter will begin to detect its field. What you can do is easily compare the minimum sensitivity of one meter to another. This specification is given in the description of most meters.

I'm electrically sensitive. To avoid shielding everything in sight, how can I find out what types of EMF I am most sensitive to?

Electrical sensitivity can take so many forms. Some people are more sensitive to electric fields, some to magnetic fields, and others may be more sensitive to radiofrequencies. Of course it is also possible to be sensitive to more than one type.

While the quickest and surest way for an electrically sensitive person to find relief is to immediately and completely remove him/herself from all exposure to electricity, this may also be the least practical solution. Mitigation, in the form of shutting off electricity where possible, increasing distance where feasible, and shielding everything else is the only alternative. But what should be shut off, or shielded? And what material should be used for shielding? The answer depends on what type of EMF the person is sensitive to.

In our electrified world, we are commonly exposed to a mixture of EMF types and frequencies. By creating an environment where a person is exposed to only one type of field at a time, one can quickly rule out fields which do not need to be addressed, and narrow the scope of detection equipment and mitigation efforts to the types of fields that are the most offensive. The Electrical Sensitivity Diagnostic Kit contains everything you need to create a pure AC electric field, DC electric field, AC magnetic field, and DC magnetic field. The truly electrically sensitive person will know after only a short exposure to each field type which are the offending fields.