Stewart's Corral

About me (part 2 - continuation) and
Testing Electrosmog meters
page 33

visitor #

Index About Me and EHS
and Awareness.
Real or imagined

About me, part 1
How it started
About me, part 2, Living with EHS
Conversion chart and entry table
Searching for EM Smog in Rural Outdoors
Meter Evaluation
Features to Look For
More Meters Evaluation in Urban
Measuring a cell phone
Updates up thru 2021
Indoor Equipment Evaluation
part 3

Measuring cellular and smartphones part 8

Spectrum analysis graphs part 7
Health Links

part 4,
Book and video recommendations,
Top research picks.

A group of German doctors, led by Dr. Cornelia Waldmann Selsam found that 70% of patients did not experience health effects if the microwave field levels they lived in were less than 0.06 V/m, whereas when these levels rose to 0.2 V/m and above, only 5-6% of their patients did not experience health effects. She concluded that in order to protect the general public, microwave levels should be below 0.06 volts per meter (V/m). More details can be found at

Research studies by Hardell (2003, 2004, 2005, 2006, 2009), Mild (2007), and Kundi (2009), among others, have found a link between mobile phone and digital cordless phone use and an increased risk of developing brain tumours and non-Hodgkin's lymphoma, especially in younger age groups. Mobile phone use has also been linked to dementia-like changes in the brain (Salford 2003, Eberhardt 2008), and with fertility problems (Fejes 2005, Erogul 2006, Yan 2007, Agarwal 2008).

Many people have wireless enabled internet access for their computer at home. These can emit RF radiation that can travel across property lines to their neighbors' homes. The attendant radiation is similar to that of a nearby high-power mobile phone mast.
-- Excerpt from

My story with EHS, continued from part 1

When my family and I moved here in 2002 to Republic, WA, seeking a quiet rural area without towers, chemical, or electrical pollution, some of our symptoms disappeared immediately. Our health improved or recovered. Nobody around here could get cell-phone service.

Then in 2006.Feb, we noticed an increase in the noise levels, coinciding with cellular coverage for Curlew, and a new radio tower on Gold Mtn. Mom's tinitus which disappeared in 2002, started coming back. I started searching for ways to measure the EMR levels.

In 2008.Sep, a new cell-tower was erected right in the middle of Republic. When I drove thru town, my heartbeat became arrythmic, (skipping beats, or double beats) for the minute it took to get past the tower and exit town. Not to mention the spike up in headache pain. I became determined to avoid shopping at any stores in Republic.

In 2009, my rural neighborhood started hurting more. I had trouble pinning down the cause. I started seeing people driving while on their cell-phone, even down in the valley.
Map of measured coverage, starting in 2011.
Map of tower locations around Republic, over aster elevation topography.
and for comparison, Map of tower locations around Raymond, over aster elevation topography. (2011)

Another visible change was the number of satellite dishes, mostly for internet and television. The dishes concerned me as I knew they transmitted from Earth to satellite at 20-30 GHz, beyond the range of any consumer level meters. Others with EMS report ill effects near the back of these dishes due to the longitudinal/scalar waves coming off the back side, and I was sure I could feel some of them, one in particular. I tried to ignore it, and continued to ride to the mailbox past this house, because the only alternative is to ride along the power lines. This left me between a rock and hard place. When I did linger to talk to the neighbor (designated #3 by distance), whom at the time I considered a friend, I usually came away with a headache, but did not complain. For what good would it do?

Then on 2009.Oct.14, I was required to travel to Colville for a doctor's review. That office was very hot, (both power lines and wireless), and brought on such symptoms that I became very ill, and certainly failed the short term memory tests she was focusing on. I retreated for a few weeks, avoiding electrical devices, including this shielded and quiet computer.
Next just when my recovery was almost back, on 2009.Nov.17, I had to appear in Republic for jury duty. They apparantly did not believe my excuse this year. While waiting for everybody to arrive, I was exposed to someone in the room texting. I felt pain, and my headache grew. I moved to the opposite corner, but it was not far enough away. During the selection process, I quickly degraded to where I could not follow the judge speaking. My own speech became slurred and slow as I had trouble finding words. I became dizzy and came close to blacking out upon standing. I was not choosen, and quickly was driven home. Once again, I was down for a few weeks. My sensitivity was getting worse. I started having tinitus myself, hearing sounds both high pitched and low rumbling. The projects I was working on suffered, as my ability to function productively was smashed.

My need to identify and locate the source affecting us in our safe house became more urgent, the need to have a place I could recover, or at least stop getting worse. So now that I have explained the Why I have done this, here is a documentary of my efforts to do so:

RF Units conversion table - dBmW - W/m² - V/m
Magenta = Exceeds Thermal heating safety standards, for 6 minute exposure.
Pink = Dangerous levels. Some normal people may experience minor effects: stress, headaches, insomnia, mental disfunction. Everyone at risk of non-thermal RF effects due to VGCC (Voltage Gated Calcium Channel) and Peroxynitrite disfunction.

Red = Very strong, ElectroSensitive individuals do experience adverse health effects.

Yellow = Warning range. The most sensitive have effects

Green = safe, no effect except for the very sensitive

Dark green = close to natural background level
(except for satellite reception like gps at -125 dBm)

You may enter data in any of the boxes to the right, then press Tab or Enter. All other units of measure will then be calculated from that entry.

dBm (in the top row only) is a special case. Each receiving antenna design has a different effective area, therefore you can not use a direct calculation between power density (mW/m²) and RF power (dBm) received as an RF field strength measurement, without knowing the antenna specs.

For the Cornet ED family, antenna factor is -27.63 dB

Show page with only this calculator.
Conversion table
dBm Antenna factor Anchor to dB
V/m mV/m
W/m² mW/m² µW/m²
mW/cm²   µW/cm²   nW/cm²

Adding Low frequency Magnetic and Electric field scales, and establish a color scale, consistent with the most meters and safety scales:
Magnetic 000
Electric 01241015203050100500V/m
RF 00.00050.0010.0110.050.10.23870.515100mW/m²
Safe Low Moderate High Danger

Searching for Electro-Magnetic Smog - Rural Outdoors

In 2009.Dec, I purchased a new meter from EMFields, the ACOUSTIMETER AM-10, seeking to replace the (highly sensitive) ZAP CHECKER ZC180 whose analog needle gets stuck sometimes. (It's 4 years old) They said their current models are better about that problem, but I am not inclined to purchase another from them, while they only have analog needles. I was programmed to be a bean counter, so I like numbers to quantify the situation. Plus, it is important to gather evidence, or have proof not dependant on my word alone.

What a surprise! a hot spot in the (southwest) neighborhood, right where I have been getting headaches when passing by.

Peak from road 0.31 V/m
peak from outside front door 1.51 V/m

Average is low due to the digital and pulsed nature of the beacon. Average covers a sample time of 3 seconds.

I was finally able to say, what was bothering me (probably for the last year) was a beacon, transmitting 10 times per second.
Audio recording: 5 seconds 10Kb [mp3] (includes in the background, the sound of my horse walking.)
The beacon sounds like a jackhammer, and clearly identifies the type of transmitter.
————Skip meters to stay with my health story.————

I really like this meter, because from the audio, I can identify the source by the various tranmission protocols of each type and frequency of wireless device, as they all have a unique pattern. This beacon matches the wifi.mp3 recording found at EMFields.
Several recording examples are at EMFields from the Acoustimeter, and also Environmental Diseases.
Also, getting calibrated numbers makes this a true meter, instead of a detector.

It would be better if the circuitry was minaturized, as the first production run is fairly big. 7.5 inches tall (19 cm) and 4 in. (10 cm) wide.
The numeric display is still not as sensitive as the ZAP CHECKER, however both seem to have a similar threshold of sensitivity.
For this specific location and frequency,
At 250ft (75m) the ACOUSTIMETER speaker starts clicking louder,
at 150ft (45m) the ZAP CHECKER red light starts blinking,
at 90ft (28m) the ACOUSTIMETER display shows 0.03 V/m,
at 75ft (23m) the ZAP CHECKER needle starts going up.

Farther up the hillside, with clear line of sight, at 1150ft (350m) the ACOUSTIMETER is still able to detect another beacon of the same type (introduced further down the page). The metal roofing bounces all of this microwave energy emitting upwards back down inside the building, concentrating the exposure inside.

For comparison, driving thru Republic (specifically past the Library, about 2 blocks from the tower) now peaks the ACOUSTIMETER around 0.73 V/m, while the ZAP CHECKER needs the sensitivity turned down to 6 to prevent the needle from exceeding 100 (to prevent overload). Before the tower, the ZAP CHECKER could be left at sensitivity 10 or 9. Also in 2006, when I traveled thru the metro areas of Puget Sound, turning the sensitivity all the way down to 1 still resulted in measurable signals (50 and above) when passing towers. Colville has progressivly gotten stronger also, in 2009 it required the sensitivity turned down to 5.
See the Spectrum Analysis page for those charts covering those 4 years with the SPECTRAN meter.

On 2010.Feb.25 I hiked to the top of the ridge for (what is becoming) my yearly scan of Franson Peak above Curlew (distance 6 miles). As I climb the 800 ft of elevation, the ZAP CHECKER rises from 2 (at highest sensitivity setting 10) basically the floor threshold, to 10 near the crest, while the ACOUSTIMETER goes no higher than 0.02 V/m and stays silent.
When I reach the crest, ZAP CHECKER jumps up to 80 or more, and I have to turn down the sensitivity. Ow it hurts up here more each year!
I quickly make my scans, and this year, video record them.
Click to enlarge
After my first pan around 360 degrees, I stopped here, facing East.
In the audio recording, a steady whine from the cell-tower(s) 6 miles away, plus a (closer) data transmission with a slow pattern, can be heard coming from the east. It sounds similar to a 2G cell-phone, possibly checking in with a tower, or checking for messages. Alas, none of the other meters can help pinpoint this signal's source, however the ZAP CHECKER does spike when pointed this direction, about the same as last year. That must be a different signal source, as it is steady or constant. So the ZAP CHECKER shows 80-100 at sensitivity 10, but the ACOUSTIMETER only shows a peak of 0.03, but the audio is loud and very useful. The directional antenna plus the audio makes this the perfect meter/detector for hunting for sources.

Audio recording: Here is a better sample at higher quality, recorded 2010.May.19 while panning from north to southeast on the next ridge to the south. 41 seconds 323Kb [mp3]. The distant whine goes up and down as I pan, aiming left and right, trying to pin down the source of the other signal.

Back to 2010.Feb.25, Audio recording: 5 seconds 10Kb [mp3] while pointing west or southwest toward Republic.
Peak reading 0.03 V/m, not a very high number, but very loud. Here the meter doesn't shine, if sensitive and calibrated numbers are wanted.
On the other hand, being in a rural area, the fact the sounds are loud is a big plus for the meter as a detector.
The steady whine of many overlapping cell-phone transmissions are very noticable, coming from specific directions of cell-towers.

Next is the CORNET ED-85EX I just got:
With the basic 2.4Ghz whip antenna, I get no signal.

Next I hook up the HyperLog-7060 by Aaronia, and pan 360 degrees, finding a signal only from the north, toward Franson Peak and Curlew:
I know this meter is not calibrated for this antenna, so the number is to be regarded as detector mode only. It is included here only because I was able to get a rise from the meter, and because of what direction came up with the stronger reading.
Click to enlarge
This is interesting, aim down, and the signal goes away, (-55dBm is the floor threshold)
Click to enlarge
But aim lower, and the signal comes back stronger.
Click to enlarge
Maybe a reflection off the rocks?, but that would not be consistant with a stronger signal!
I realize later that I was holding the antenna wrong, as almost all cellular antennas are vertical in polarity. This remains interesting anyways, for making mistakes is an effective way to learn new things.

Here is a more recent scan of Franson Peak, from one ridge south, with the updated Cornet version 3 hooked up to the HyperLog-7060.
Click to enlarge
Notice the units are both in mW/m² now, and the Max of 0.015 is a bit higher than February, because I am holding the antenna at a different angle. Is this vertical or horizontal polarity?? Actually, a bit of both.
Anyways, this combination of meter and antenna does boost the sensitivity, and turn this into a decent detector. By panning side to side, I was able to verify the primary signal comes from the North, (and also down toward the rocks, again), but aim away from North, and the signal strength goes down to the floor at 0.001

SPECTRAN version 2 readings have been removed, as Aaronia agreed it needed to be sent back for repair. Just received version 4, (in 2010), but that is looking like a new story for another page.

My story with EHS, continued

Since mid or late 2009.December, I have also been getting spikes up in head pain, when near another neighbor in the opposite direction, (#1 to the southeast). Now as my round corral melts, I find I can no longer tolerate being near the fenceline. The pain and brain fog make my training corral no longer possible to be in.
On 2010.Mar.24, I was exposed to this neighbor's wireless router for just a few minutes, taking readings at close range (by my request, and invitation to investigate).
The ACOUSTIMETER went off the scale, reading > 6.0 V/m, and the CORNET measured over 0 dBm.
I can only hope the unambiguous noise and definitely high readings flashing in the red made an impression. Alas, it did not. Her husband can't be without his toys, and does not believe me.
What I had been speculating for 3 months was now confirmed as a definite cause. Unfortunately, I got an immediate migraine that really ruined not just my day, but the next several. I had definite symptoms of a concussion, as each step felt like my brain was being jostled around and bruised in severe pain. It took 5 or 6 days to recover; from just 5 minutes of exposure. This is what Electro Hyper Sensitivity Syndrome means to me. If I don't avoid it, it ruins my health and ability to accomplish anything. Exposures like that really ruin my short term memory, my speech, concentration. I was down for several days.

Is it really too much to ask, to turn off their noise-makers when they are not home, or are in bed? If for example, the equipment in question was a boom box, how long would the neighborhood tolerate it being on 24/7??
"Do to others, what you would want them to do to you" is a well known rule, and certainly applies here.

Over the last year since this WiFi was added next door, I have been getting progressively worse again. Last summer I added shielding to our windows, which helped immensely in being able to tolerate being upstairs in the house. But despite this, it is not enough for me or the others in my family who are also sensitive. I now wake up each morning with a level 2 headache. When I go outside, the pain spikes up to level 3 and later level 4 approaching a mild concussion, if I linger here too long. The only way I can escape the neighbor's toys now is to get 1000 feet away, preferrably up in the National Forest, where my headache goes down, and the bruising clears after a couple hours. (Assuming I avoid hilltops of course.)

Please see the youtube links on the next page, showing how red blood cells clump together from this type of exposure. Also the study on how DECT phones affect the heart. These studies clearly match my symptoms.
————Skip meters to stay with my health story.————

Meter Evaluation

To complete my evaluation and review of these meters, I measure each meter with each other.

CORNET measuring ACOUSTIMETER: no signal, below sensitivity threshold of this meter.

ACOUSTIMETER measuring CORNET: no signal, DEFINITELY A QUIET METER. I can hold the CORNET without any symptoms.
Too bad CORNET is not very sensitive. I really like the informative display and small size, and especially no emissions.

The only two meters with zero emissions are ZAP CHECKER and CORNET.
Almost zero emissions! Upon closer inspection, it actually needs 1/2 inch to get that level, but only from behind the power button, where the center of the signal emits from. (No emissions from the display). Just hold the meter at the bottom to reduce or avoid any exposure.
Click to enlarge

One inch is required to get the needle below 5 at highest sensitivity, and two inches for the red light to stop blinking. The ACOUSTIMETER does bother me a little bit. Moreso the longer I hold it. This is explained in the emissions table below.
Click to enlarge

CORNET version 2 measuring SPECTRAN version 2 at zero distance:
Click to enlarge

CORNET version 3 measuring SPECTRAN version 4 ... Eeek! this is Not better!
Click to enlarge
The emissions from the Spectran do go down about 3 dBm with the charger unplugged, but it is still unacceptable.

ACOUSTIMETER measuring SPECTRAN version 2 sitting on case, zero distance:
Click to enlarge
Audio recording: 14 seconds 27Kb [mp3]
Each "program" has it's own sound, due to frequency, timing, and bandwidth differences. Some settings actually are low in emissions, while others are high.

ACOUSTIMETER measuring SPECTRAN version 4 sitting on case, zero distance:
Click to enlarge
This was the highest emissions among the many programs on the one-touch buttons I have set up.
The SPECTRAN is noisy for a high quality high sensitivity meter. The ACOUSTIMETER can pick up the SPECTRAN emissions up to 12 ft. (3.7m) away. Not good for electro-sensitive people.

ZAP CHECKER measuring SPECTRAN version 2. Note the sensitivity is turned down to lowest setting of One at zero distance.
Click to enlarge

As the years pass, I have added more meters below, so the number of pictures showing meters measuring meters starts to become exponential. The ones above give a sampling of the range possible, so look to the table below for each new evaluation.

Features to look for:

What I am looking for in a perfect meter, is: The first 11 features are evaluated in the column below, in the same order as listed.


HF Broadband Meters
(in alphabetical order)
Frequency Range # of Axis
Features MSRP
Safe and Sound Pro

 New for 2019 
200 MHz - 12 GHz
650 MHz - 10 GHz
(± 6dB)
1 specs don't say,
I measure
0.0115 V/m
+2 Low level of emissions, very good. +2 Very wide frequency range, very fast time slice ready for 5G below 12 GHz. +2 Peak, Max, and Average, updates several times per second. +2 Current is shown as Peak. +2 Clear and very fast OLED.    +1 Very good and adequate color LED light bar. +2 Speaker with sound analysis. +1 Above average sensitivity. +1 Units only show as µW/m² but don't change so that's ok. +1 Not too big, not too small, barely fits a pocket.
2 AA lasts 15-18 hours
Accepts USB micro-B power.
 Top rating 
$ 370

Acoustimeter AM-10 200 MHz - 8 GHz both 1
and 2
0.02 V/m (numeric display)
0.001 mW/m²
ultra-sensitive audio speaker
Neutral. Emissions not perfect, but not bad. +1 Good frequency range,
lacking on the low end.
+2 Excellent Digital numeric readout.
Shows Peak.
+2 Excellent Digital numeric readout.
Shows Current at same time as Peak and Average.
Neutral. Older LCD display type, but very readable.    +2 Both color LED light bars show instantanous activity. +2 High quality Audio speaker. +1 Top quality sensitivity,
for an internal antenna.
+1 Readable units in V/m. -1 Smaller than those with huge external antennas,
but does not fit in most pockets.

2 AA 20 hours
£ 243
AlphaLab Inc.
TriField Meter TF2

 New for 2018 
Gauss meter and
Electric Field meter
40 Hz - 100 kHz
plus RF
20 MHz -  6  2.8 GHz
3 Mag


1 RF
M   0.1 mG - 100 mG

E   1 - 1000 V/m

RF   0 - 20 mW/m²
+2 Low emissions. +2 Good frequency range, including RF mode. +1 5 second peak display. +2 Excellent digital numeric readout of current levels, clear font. +2 Excellent clear LCD display.   +1 No color LED bar, but has LCD sweep style instead. +1 Sound clicks as a detector, faster for higher levels. No sound Analysis. +2 Best sensitivity for Magnetic and RF. +0 Units are fixed. +1 Too big for most pockets, but not too big.
$ 165
Cornet ED-15SA 100 MHz - 3 GHz 2 0.026 V/m
0.0018 mW/m²
+1 Very low emissions. Neutral. Standard frequency range. Neutral, Either does NOT show peak, or is difficult to get peak. +2 Excellent digital numeric readout of current levels, large font. +2 Excellent clear LCD display.     +2 Excellent color LED light bar. -2 No sound capability. Neutral sensitivity. Neutral units are fixed, but not confusing. +2 Excellent small size fits any pocket.
9V >20 hours
$ 115
Spectrum analysis:
2.4 - 2.5 GHz
0.000003 V/m
0.000000000025 mW/m²
Cornet ED-7 300 MHz - 3 GHz 2 0.026 V/m
0.0018 mW/m²
+1 Almost perfect emissions. Magnetic is the problem. -1 Small frequency range, covers only the basics. -1 Does not show Peak, no display. -1 Does not show Current numerically, no display. Neutral. No numeric display to evaluate.    +2 Excellent color LED light bar. +1 Has speaker, but small and tinny. Neutral, average sensitivity. Neutral, No display to show units. +2 Excellent small size fits any pocket.
$ 39
Cornet ED-75 100 MHz - 6 GHz
plus Low-EMFreq:
50 Hz - 15 kHz
Gauss meter

0.013 V/m
0.0005 mW/m²

0.5 mG - 600 mG
+2 Close to zero emissions. +1 Wide frequency range. +2 Excellent digital numeric readout of Peak levels. +2 Excellent digital numeric readout of current levels, large font. +2 Excellent clear LCD display.    +2 Excellent color LED light bar. -2 No sound capability. Neutral, average sensitivity. ?Have not seen in person, no comment available. +2 Excellent small size fits any pocket.
$ 132
Cornet ED-78S
100 MHz - 8 GHz
plus Low-Freq:
50 Hz - 10 kHz
Gauss meter

0.014 V/m
0.0005 mW/m²

0.1 mG - 600 mG
+2 Close to zero emissions. +1 Very wide frequency range. +2 Excellent digital numeric readout of Peak levels. +2 Excellent digital numeric readout of current levels, large font. +2 Excellent clear LCD display.    +2 Excellent color LED light bar. +1 Has sound speaker, but of average quality. Neutral, average sensitivity. +1 Very readable units, remembers preference, limited only by monochrome small display. +2 Excellent small size fits any pocket.
$ 169
Cornet ED-85 1 MHz - 8 GHz
included whip antenna:
600 MHz - 5.8+ GHz

0.026 V/m
0.0018 mW/m²
+2 Close to zero emissions. +2 Excellent frequency range despite the simple antenna. +2 Excellent digital numeric readout of Peak levels. +2 Excellent digital numeric readout of current levels, large font. +2 Excellent clear LCD display.    +2 Excellent color LED light bar. -2 No sound capability. Neutral, average sensitivity. +1 Very readable units, limited only by monochrome small display. +1 Excellent small size, except for antenna sticking out of pocket.
9V >20 hours
$ 180
Cornet ED-85-EXS 1 MHz - 8 GHz
included whip antenna:
400 MHz - 6 GHz

0.0083 V/m
0.000187 mW/m²
+2 Excellent Zero emissions except for magnetic bubble formed by magnetic speaker when on. +2 Excellent frequency range despite the simple antenna. +2 Excellent digital numeric readout of peak levels. +2 Excellent digital numeric readout of current levels, large font. +2 Excellent clear LCD display.    +2 Excellent color LED light bar. +1 Has sound speaker, but of average quality. Neutral, average sensitivity. +1 Very readable units, limited only by monochrome small display. +1 Excellent small size, except for antenna sticking out of pocket.
$ 186
Cornet ED-88T

 New for 2016 
100 MHz - 8 GHz
plus Low-Freq:
50 Hz - 10 kHz
Gauss meter
Electric Field

0.014 V/m
0.0005 mW/m²

0.1 - 600 mG

10 - 1000 V/M
+2 Close to zero emissions. +1 Very wide frequency range. +2 Excellent digital numeric readout of Peak levels. +2 Excellent digital numeric readout of current levels, large font. +2 Excellent clear LCD display.    +2 Excellent color LED light bar. +1 Has sound speaker, but of average quality. +2 Improved sensitivity.
Highest rating by independant tests for low-price meters.
+1 Very readable units, remembers preference, limited only by monochrome small display. +2 Excellent small size fits any pocket.
Accepts USB micro-B power.
 Top rating 
$ 189 here

$ 179 sale price
and review
Canary Hotspotter HS-20 WiFi 802.11b/g/n
2.4 GHz - 2.5 GHz
2 ultra-sensitive exceeding
Acoustimeter speaker
+2 Excellent zero emissions. -1 Small frequency range, covers only the earliest bands and protocols of WiFi. Neutral. Manual paging to show peak bars for each ID. Neutral. Not designed to show current in real time. Neutral, Slow display, wait for rotation of all information.    Neutral. No LED bar. Neutral. No sound capability. +2 Best sensitivity of WiFi beacons. Neutral. Just shows bars. +2 Excellent small size fits any pocket.
$ 49

 New for 2018 
100 MHz - 8 GHz
plus Magnetic
50 Hz - 10 KHz
Gauss meter and
Electric Field meter
_ RF

_ Mag

0.0137 V/m
0.0005 mW/m²

0.1 mG - 50 mG

2 - 1000 V/m
+2 Low level of emissions, very good. +1 Very wide frequency range. -1 Does not show Peak, no display. -1 Does not show Current numerically, no display. Neutral. No numeric display to evaluate.    +2 Excellent color LED light bar. Neutral. Has speaker, but only for alerts. +1 Above average sensitivity. Neutral, No display to show units. +2 Excellent small size fits any pocket.
LiPo lasts 8-10 hours
$ 160
Latnex AF-5000

 New for 2021 
50 MHz - 10 GHz
plus Magnetic
50 Hz - 60 Hz
Gauss meter and
Electric Field meter
1 RF

3 Mag

0.0002 mW/m²
advertised sensitivity not realized

0.01 mG - 2000 mG

50 - 2000 V/m
+1 Medium level of emissions, but short range. +2 Wide frequency range. -2 No peak or max. +2 Large digital numeric readout of current level, clear font. +0 Very good clear LCD display in most lighting, Marginal display in sunlight.    +1 Not an instantaneous LED bar, but similar to a level bar. -2 No sound capability. +0 Good sensitivity in 2 of the 3 types, poor threshold for RF. +2 Excellent units display, lots of room for clarity. +2 Excellent small size fits any pocket.
3 AAA lasts 8 hours
$ 210 here
TES 593
same as Extech 480846
10 MHz - 8 GHz 3 0.0015 V/m
0.00001 mW/m²
advertised specs not realized
+2 Close to zero emissions. +2 Very wide frequency range. +1 Good digital numeric display of Peak levels. +2 Good digital numeric readout of current levels, large font. +1 Very good clear LCD display.      -1 No LED bar. -2 No sound capability. +1 Above average sensitivity. +1 Very readable, has separate indicators for different units. Neutral. Can fit in pocket, but is long.
9V lasts 2-5 hours
$ 499
TriField Meter EX100 50 MHz - 3 GHz 3 6.1 V/m
98.7 mW/m²
?Have not seen in person, no comment available. -1 Small frequency range, covers only the basics. -1 No peak display. -1 Sweep display for current levels, not precise or numeric. -1 No numeric display.   -1 No LED bar. -2 No sound capability. -1 Poor sensitivity. -1 No calibrated units. +1 Too big for most pockets, but not too big.
$ 130
Zap Checker 180 10 MHz - 4.5 GHz 1 ultra-sensitive
+2 Excellent zero emissions. Neutral. Not the worst, not the best frequency range. -1 No peak display. -1 Sweep display for current levels, not precise or numeric. -1 No numeric display.    Neutral. Has some LED capability to show instant digital signals. +1 Has sound buzzer. +1 Very sensitive as a sniffer. -1 No calibrated units. +2 Excellent small size fits any pocket.
2 AA 80 hours
$ 159
Zap Checker 190B
1 MHz - 8 GHz 1 ultra-sensitive
?Have not seen in person, no comment available. +2 Excellent frequency range. -1 No peak display. -1 Sweep display for current levels, not precise or numeric. -1 No numeric display.    Neutral. Has some LED capability to show instant digital signals. +2 Has sound speaker. +2 Very sensitive. -1 No calibrated units. +2 small size, although antenna doesn't do pockets.
2 AA
$ 369
LF Meter Frequency Range # of Axis
Sensitivity /
Measurement Range
Features MSRP
DER EE DE-1007 30 Hz - 400 Hz 1 0.1 mG - 200 mG +2 Excellent zero emissions. -1 Limited frequency range. +1 Good digital numeric display of peak levels. Must be in Max mode. +1 Slow digital numeric display of current levels. +1 Excellent clear LCD display, but is slow update per second.     Neutral. No LED bar. -1 No sound capability. -1 Not sensitive for small fields. +1 Very readable units. +2 Excellent small size fits any pocket.
$ 99
Dr. Gauss Meter
aka Gauss Master
40 Hz - 2000 Hz 1 0.1 mG - 10 mG +2 Excellent zero emissions. Neutral. Mid-range frequency range. -1 No peak display. Neutral. Sweep display for current level, not precise or numeric. -1 No numeric display.     Neutral. No LED bar. +2 Excellent response audio sound. +1 Very good sensitivity. Neutral. Sweep units have some precision. +2 Excellent small size fits any pocket.
$ 35
Gigahertz Solutions
ME 3030B
16 Hz - 2000 Hz 1 E  1 V/m - 1999 V/m
M 1 nT / 0.01 mG - 1999 nT
+2 Excellent zero emissions. +1 Wide spectrum frequency range.
Ideal range would be up to 10KHz.
-1 No peak display. +2 Excellent digital numeric display of current levels. +1 Good clear LCD display.     Neutral. No LED bar. -1 No sound capability. +1 Good sensitivity. +1 Very readable units, limited by small display. +1 Too big for most pockets, but not too big.
$ 125
HF Spectrum Meter Frequency Range # of Axis
Sensitivity /
Measurement Range
Features MSRP
Spectran HF-6065
version 4
10 MHz - 6 GHz
HyperLog antenna:
700 MHz - 6 GHz

0.00000061 V/m
0.000000000001 mW/m²
-2 Terrible emissions, very noisy. +1 Wide frequency range. +2 Very good display of peak values and frequencies. +2 Very good display of current value, large font. +1 Very complex LCD display is actually a bad thing,
creates too much noise, and is of poor visual quality.. Very slow LCD crystals, poor contrast.
    Neutral. No LED bar. +1 Has audio sound, but does not work well. +2 Designed to be of top sensitivity. Your mileage may vary... +1 Somewhat good readable units, limited by display quality.. -1 Fits in no pocket. Has it's own carry case, of suitcase dimensions.
RF Explorer
Model 3G-24G Combo
2.3 - 2.5 GHz
expansion module:
15 MHz - 2700 MHz

0.00000061 V/m
0.000000000001 mW/m²
-1 Strong emissions escape by the window. Metal case blocks other angles of escape. Neutral. Frequency range depends on model. New ranges being worked on. +2 Excellent display of peak values and frequencies. +2 Excellent display of current levels as spectrum analysis. +2 Excellent LCD display.    Neutral. No LED bar. Neutral. No sound capability. +2 Excellent sensitivity. Neutral. Measures in dBm. +1 Good small size. Antenna sticks out of pocket.
Internal LiPo 16 hours
$ 289

Written in 2010, the ACOUSTIMETER is best (until 2016) for finding weak signals, and analyzing what is happening in an area, because of its high quality audio speaker. Especially when looking for WiFi / WLAN beacons, the ACOUSTIMETER wins, with it's ability to detect beacon signals at over 1000 ft, and distant GSM towers at 10 (or more) miles. It is so sensitive, it can hear itself thinking. Thus the click click sound of it's own processor. Something that can only be heard in a completely quiet environment of a very rural area. To review the positives: It shows current, average, and maximum at the same time, plus a couple color LED bars on a calibrated scale that is appropriate for biological effects. Also the value in being able to hear the signal's distinct pattern, or "sound signature", can not be dismissed lightly. Another little detail that is a positive, is the earphone jack, allowing you to record the sounds, or listen for weak signals in a noisy (auditory) environment. Battery life is excellent, recommending >2500 mAH NiMH batteries over any Alkaline ones, thus lasting 25 hours, drawing 105 mA at 3V.

The CORNET ED-7 features an audio speaker, bringing the benefits of audio detection to a small package with miniturized circuitry. In urban areas, it does perform very close to the Acoustimeter, but in rural and quiet places, it is lacking the sensitivity and sound quality. It does have two big negatives, 1. regarding the magnetic field it generates, and 2. the battery compartment is held in place with two tiny screws. I don't know yet how many hours each alkaline battery will go, but trying to use rechargable 9V batteries is out of the question when it looks and feels like the screws will strip out the plastic in short order.

Here are two audio recordings taken in each location, the first two are noisy urban environments measuring between 0.4 and 0.8 V/m. The third is rural measuring one neighbor's devices, across the fenceline. 0.05 V/m
Compare the difference in these two meters audio quality:
 Acoustimeter AM-10Cornet ED-7
Colville34 seconds 270Kb [mp3] 16 seconds 128Kb [mp3]
Spokane49 seconds 385Kb [mp3] 32 seconds 250Kb [mp3]
neighbor #15 seconds 40Kb [mp3] 5 seconds 37Kb [mp3]

CORNET ED-85 is a hard package to beat. It's only flaw is the lack of sensitivity. This meter has the superior display. The version 3.0 firmware adds Peak Hold to this meter. To review the positives: It shows current and maximum at the same time, shows a history of 16 seconds, and a color LED bar of current activity above 180 µW/m², in a small package with no emissions. The draw on the battery is as follows:
BacklightBattery draw

Update 2012.Nov. The ED-85 now has a sound option, model# ED-85-EXS. It can also now display in V/m, and the sensitivity threshold has been lowered significantly. The sound quality is identical to the ED-7, but with the default antenna included, the audio sensitivity is slightly less than the Acoustimeter.
However after changing the antenna to the Hyperlog antenna, it becomes better then the Acoustimeter in sensitivity.
Regarding the higher magnetic field mentioned earlier with the ED-7, it is being put out by the tiny speaker amplifier, and I find myself holding the meter up to my ear to hear the faint signals of my rural area. So the only remaining negative, is the lack of audio jack, so I can choose what kind of headphones I put to my head. Otherwise measuring neighborhood WiFi beacons and cellular activity, I find the audio volume is adequate, I can hear the activity while watching the display. This is a very good experience now, I am impressed with this new model.
With all the features now present in a small package, I find this meter to be good competition to the Acoustimeter, lower in sound quality, but better in sound detection with a better antenna, (resulting in a better signal to noise ratio than the Acoustimeter), and better in display options. For those on a small budget, this meter gives the most bang for the buck.
The draw on the battery has improved, with the backlight now drawing much less than the older version:
SoundBattery draw
Power ONoffoff32.9
Power ONONoff37.5
Power ONoffON35.3
Power off    0.0
Update 2012.Dec. After driving through towns with the default antenna and sound on, I am now even more impressed with the ED-85-EXS. I can now hear the low power FM transmission from the radio tower, although not clearly enough to understand it. The peak readings are sometimes more than the Acoustimeter, because the antenna is 2-dimensional, instead of directional. In most places the readings are slightly lower, and in some others, it read higher. I'll call it close enough to be of equal calibration. There is no doubt that by placing the Cornet on the dash, and I suggest placing it in a cell-phone/gps/whatever Holder, mounted to the dashboard, this becomes an excellent way to survey an area while driving. There is no lack for sensitivity when listening to the sound analysis. It is even loud enough to be heard in a diesel pickup truck.
Next I hooked back up the HyperLog high-gain directional antenna, and walked around the neighborhood, and up the ridgeline. I actually heard some signals that escaped my survey with the Acoustimeter. Besides the usual cellular activity that is intermittant, (more frequent than last year, and coming from multiple directions now), I can pick out the direction it is coming from with a bit more clarity, but very similar to the Acoustimeter. The antenna is the reason for the improvement. Also, get this!, I picked up the regular 12 second interval "bzzzt" from the Radar in Spokane, that is 93 miles away. Surprised?, yes.

There are definite advantages to having the Cornet with external SMA antenna connector. Here is a compilation of reviews of using different antennas with the Cornet ED85EXS. The default antenna does not pick up the full spectrum that the meter itself is capable of measuring, so hooking up alternate antennas seems to be a very good thing for the advanced user.

Update 2013.Nov CORNET ED-78-S replaces the ED-75. This became the top meter to have until the ED88T came out, if you want an internal antenna. All the latest display updates, plus sound analysis, plus magnetic field mode. I have now stopped taking the old Dr. Gauss meter along with me, as this unit now displays both readings in digital, led bar, and the last 30 readings, or 15 seconds. The menu has also finally been upgraded to allow you to save what mode you want to display in, so it starts up in the units of your choice. In fact the only thing this meter does not have that the ED-85-SX does, is the extra 5 dBm of sensitivity that the external antenna gives. But this model fits in any pocket, and also has an audible warning when readings exceed a level, that you can choose from a list.
SoundBattery draw
Power ONoffoff33.3
Power ONONoff39.5
Power ONoffON36.7
Power off    0.0

Update 2016.Feb CORNET ED-88T adds some new functions to the ED-78-S, Frequency counter, and Electric field mode. Now LED sensitivity can now be adjusted. The data sampling rate has been increased to 10,000. This does increase sensitivity and accuracy that shows up holding the older models side-by-side. This is now Cornet's top meter. My tests also show the magnetic field sensitivity has also been improved, and now is on par with Dr.Gauss. The RF sensitivity is also showing better results, which is also reflected in better sound analysis content. The audio sound can detect RF signals down to 0.05µw/m² (0.0043 V/m) Bravo! Cornet developers.
Looks like the enhanced capabilities come at a cost to battery life:
SoundBattery draw
Power ONoffoff48.1
Power ONONoff59.9
Power ONoffON50.8
Power ONONON62.8
Power off    0.0
With the release of the Cornet ED-78S and ED-88T, my ranking of the Acoustimeter as top pick, is no longer going to stand. The 88T packs too many features and capabilities in a small package, and with the increased sensitivity and audio output, I am finally downgrading the Acoustimeter.

Regarding the 9V battery and life expectancy, it is useful to learn how many mAh (milli-Amp-Hours) different 9V batteries are rated for, to determine how long your meter will last on each battery. Using the above measured load of 62.8 mA with a Duracell rated at 310 aH equals 4.9 hours. Energizer Industrial 450 mAh equals 7.2 hours with both sound and backlight on. Or for maximum time, with sound and back light off with the Cornet ED85EXS, equals 13.7 hours. So the point is the run time will depend on what model and battery type you choose.
Are there any rechargable 9V batteries worth buying?
Finally yes, check out the Tenergy 9V 250mAh.

While this page is sorted by chronological order, I did group the newer Cornet meters together (above). Now back in time to 2010:

TES-593 is a mixed bag. I have several faults to note that don't show up on my feature chart; 1. it doesn't always register when I press a button. I condider this a serious flaw, requiring eyes on the meter when pressing buttons. 2. it doesn't remember settings like time and date, thus asking why I should bother inputting them, taking up precious battery time. 3. Several settings require power off and restart holding a button, often unmarked and requiring memorization. 4. it only shows recent maximum when in max mode, and when reviewing a stored value, it overwrites the maximum field, thus making it impractical to review stored values when in the field taking measurements. 5. I've gotten spoiled being able to see max and current at the same time. This does not allow that, and switching modes is time consuming to rotate the 4 choices. 6. battery life is shortest of all meters (drawing 71 mA DC when on, and even drawing 0.09 mA when off). But if you ignore the low battery warning between 1 and 2 hours, it does last another 4 hours. 7. Searching for WiFi beacons is a big disappointment. I must get within 40 feet before I see the readings rise from background. Also, it does not detect any fault with the other meters (except Spectran of course). This suggests to me it is not very sensitive. But in real world testing, on the positive side, it does display readings lower than the other meters I prefer, and shows a little increase when near some devices that are nearly quiet. Thus it must have good sensitivity, although somewhat selective. I find this perplexing, but probably is due to gaps in the frequency range coverage, as all meters have their own sweet spot, dependant on each antenna type and method. Also another positive, it detects electrosmog from a few devices that did not show up as hot on some of the other meters. So it does the job it was designed for, but I see room for improvement (as with them all), both the clumsy functional design and battery life are a big negative.
It measures the natural background level here at 0.0029 V/m. (2.9 mV/m) I've also seen some other technical reviews [PDF] of this meter that show the sensitivity to be rather poor (outside the center of the frequency band). I agree. I do not recommend the TES-593.

Please notice, how the Trifield (this is not the Ramsey Tri Field kit) demonstrates very poor sensitivity, and is therefore basically useless on the Microwave setting. In fact the Trifield does not Start detecting RF until 6 V/m, which is at the Top of the Acoustimeter's scale. The same is true of many cheap and simple 3-LED detectors that are priced under $100.
Also not to be confused with the new Trifield 100XE, which I have not reviewed. Other experts in this field do recommend the 100XE for it's superior detecting of magnetic and electric fields. Again Not at all good for HF/Microwave detection.

One comment about Gigahertz Solutions meters. I have not personally reviewed the HF meters, as they are quite expensive and out of the range of most people who I aim to help here. Other top experts do recommend them as superior for detecting the full spectrum of microwaves and high frequencies, more fully than any of the meters I prefer. My experience agrees that the Cornet, Acoustimeter, etc, do all have incomplete coverage of the spectrum range they advertise for. Meaning the measurements may be lower than actual power levels in the air. Despite this, I consider the meters I recommend to still be the best balance in detecting and measuring. Just remember if you want perfect calibrated numbers, you must pay much more. The only other company besides Gigahertz Solutions that makes the top rated meters, is Aaronia. According to experts. Who also agree that Aaronia meters are too noisy for electro-sensitive people. So again, it becomes obvious why I do not recommend Aaronia.

The CORNET ED-15SA has the spectrum analysis I was looking for years ago (back in 2006), but that capability only covers the WiFi and microwave oven part of the spectrum. Like the other Cornet meters, it is not very sensitive in the broadband mode. Still it is very useful for identifying beacon activity. One negative to note, is when in wide-band power (non-spectrum) mode, it does not have Max/Peak, and is stuck displaying dBm for the large font.

The CORNET ED-75 is very similar to the ED-85 for RF mode, but slightly less accurate in the specs. The LF mode is disappointing, as the bottom range of sensitivity only goes down to 1 mG, and all my significant measuring occurs between 0.2 and 2 mG. Read a review of the Cornet ED-75 here and here.
Update as of 2012.Nov: The specs have improved, and the display looks to have a higher resolution, now providing more information. I'm guessing there has been an upgrade?

The ZAP CHECKER 180 in some instances, appears to be the best detector, but does not pick up WiFi signals until close-range, similar to most of the other meters reviewed here. When travelling past Gold Mtn. it picks up signals as far away as 1.5 Mi (2Km), but the ACOUSTIMETER does not detect this one. This hilltop has a low-power FM station broadcasting from it, so it is probably that, as FM is below the 200 Mhz bottom range. There have been several times when testing various devices (see next page) when other meters showed little or no emissions, but the Zap Checker picked up a bubble of emissions as much as 4 feet away (mini cam plugged into external power), so as a detector, this is often quite useful. The display needle displays Continuous Wave or Analog type signals, and does not move for digital burst signals, so no useful numbers are available for measuring digital activity. Emphasizing this is a detector, not a meter.

I have not personally reviewed the ZC190B, thus some of the above features column 1 are marked "?". Also, it has been 3 years since I sold my TriField, thus I have also entered a "?" for it's emissions.

Finding the best low cost, highest sensitivity meter requires tradeoffs. Each meter has it's pros and cons. My favorite meter is the Acoustimeter, with the Cornet ED-85-EXS a close second.

Spectrum Analyzer meters are in a class all their own.
AARONIA's SPECTRAN is the most sensitive meter I have tested. But it requires some skill to use successfully. However, for sweeping an area for unknown signal frequencies and type, I have not found the Spectran to be useful. Aaronia insists I use the Profiles in their LCS software, which assumes I know what frequencies I want to study. I can not give it a positive review, (setting the emissions issue aside, but instead looking at the meter's actual results) for the contrast in signal strength to background noise I am seeing is very poor now. The measured data points seem muted, especially when compared to the readings from the other meters. See some testing results for Spectran on the spectrum graphs page. I still can't decide if the version 4 I was sent is broken, or if I am doing something wrong (as Aaronia support in German-English tries to convince me of).

RF EXPLORER is distributed and promoted by Nuts About Nets, developers of Wireless Diagnostic Tools, and also distributed by Seeed Studio. First impressions are that, this meter does work. My negative conclusions about the Spectran hold up and are still valid. This meter works well. The emissions are much better, but as expected from a miniture computer, it does make noise, and where it leaks out of the metal shell (or case), is the display window. The sensitivity goes down to -120 dBm, so is equal to the earlier Spectran models, and is sufficient to cover the background levels across the spectrum. The User manual can be downloaded in PDF format. A full review will take time to work on, and will be posted on the spectrum graphs page.
Update 2015.Feb After transfering the Sub-3G Expansion module to a new 4-6G model, the emissions from the 2.4G unit are now way down, very low. So the noise maker is the expansion module. Not the RF-Explorer unit itself.

Tenmars TM-190 Multi-Field EMF Meter measures and displays simultaneously: Magnetic, Electric, and RF fields, in one small meter that fits into a pocket. At first glance it looks like a good contender to challenge the Cornet line of meters. The magnetic and electric field detectors are very sensitive, even picking up a static charge if I rub my hand on my jeans. Also picking up magnetic field lines of force when Moving across them. The display is very informative, since it incorporates a large TFT LCD display. The RF section displays a histogram 20 columns wide, each column representing each measurement taken 1.9 seconds apart. That totals 38 seconds of history at a glance. It will beep an alarm if any of the 3 measurements exceed "the red line" which can be very useful to have in your pocket. But after further testing, I find it has some deficiencies as well. First, the display is virtually unreadable in sunlight. 2. The minimum RF level is reading consistantly high, it reads 0.125 V/m where all five other meters read below 0.02 V/m. So although it advertises sensitivity down to 0.03 V/m, I have never seen it below 0.0693 V/m, and that was at boot up one time. The minimum is usually a bit higher. After it gets running, I have never seen it below 0.1212 V/m. It usually bottoms at 0.1299 V/m. This is clearly the noise floor of the meter itself. So while at first glance it appears to have good sensitivity, as the RF levels wiggle up and down around various equipment I've tested it on. But after driving into town, and comparing it's results with other meters, where the cellular whine appears and becomes strong, this meter shows little to no change, as it increases to 0.185 V/m at the same time other meters rise to 0.18 V/m and reach an even footing. Then when in passing thru stronger parts of towns, I see it respond much better, so the deficiency appears to only be in measuring weak signals. This level of sensitivity may be okay for noisy environments, but is not very impressive to me. In fact I should use a stronger word in the negative this time. 3. It only shows Current levels, and does not show Max Peak. This could be added in firmware, so is an issue that may improve in time (but don't hold your breath). 4. It puts out a significant magnetic field, so holding it may not feel good for sensitive people. On the flip side, it puts out no RF emissions. Another good point, is that it can be plugged into USB to provide external power, and it draws the same amount as when on battery power.
TM-190BacklightBattery draw
Power ONLow65.3 - 71.2
Power ONMedium75.8 - 81.9
Power ONHigh91.9 - 98.4
Power off   0.0

ALPHA  LABS  TRIFIELD 2 is the updated 100XE, now with a digital readout and greatly improved sensitivity from the 100XE.
Update: 2019.Sep Alpha Labs has told me the RF portion of that first unit (I bought in 2018) was burned out, so I received a defective unit when new, which fouled up my analysis and recomendations. I'm sorry my recommendation for the last 12 months has to be retracted. :-( This is a Good meter, although Not an Excellent meter.
RF sensitivity is now very good some of the time, surpassing the Cornet, and even challenging the Acoustimeter. In fact the more comparisons I record, the more the AM is looking to be falling behind. It is certainly no longer my top meter.
The TF2 certainly reads with more sensitivity, but without the sound analysis it does not reach out to the radius of detection that I prefer.
At close range, the TF2 can detect signals that are only whispers in the sound on the AM and newest Cornets.
Also while testing smart phones, I can with the TF2 measure the charging and functioning of the touch screens. This is a big reveal, as I have been unable to previously measure why I don't feel good touching the screens. I prefer a stylus or special tip pen, and now I can measure why. Watching the meter dance when the touch screen is being triggered, is really sobering.
Then I find some signals it does not measure better. Including WiFi. It becomes clear that digital pulsed signals are not detected, and the reason is the pulse width. I can only measure WiFi beacons from a distance much closer to the emitter, than the Acoustimeter and Cornet can pick up.
So not perfect, which is true for every meter. As I continue to test it, I hope to figure out why it sometimes does not act as sensitive as my other meter.
I've added some measurements to part 3 (indoor equipment) and part 8 (cellular phones) that provides some comparison between meters.
I did a redo on my video, and that is linked down below the next table.
The specs advertise up to 6 GHz. But testing in a lab in this video by 9CI shows it actually falls down at 2.9 GHz. That's very disappointing, I get turned off strongly by false advertising.
SoundBattery draw
M & E - RF
Power ONoffoff13.9 - 15.6
Power ONONoff28.4 - 30.1
Power ONoffON16.7 - 18.5
Power ONONON31.0 - 32.9
Power off    0.0
The pulse width also fails badly in this video where several popular brands are tested. So the TF2 is not good for measuring digital pulses.
Here's a table of the test results:
Pulse width test results
Meter100 µs50 µs20 µs10 µs5 µs3 µs
Acoustimeter PassPassFail 
Cornet ED88T PassPassFail 
Safe and SoundPassPassPassPassPassPass
TF2FailFAILS to detect any pulse faster than 9,000 µs
Continuous Wave power level in test is 18 mW/m² (18,000 µW/m² / 2.6 V/m)
So after the test of time, I'll stand by my earlier conclusion it is a good meter. But not an Excellent meter. It has it's place and can add to the picture. But I don't grab it first for measuring any environments.

SAFE  AND  SOUND  PRO is the latest Broadband RF meter with a very wide frequency range, up to 12 GHz, the highest of any meter I have, with calibrated accuracy ±6dB between 650 MHz and 10 GHz. It has everything the Acoustimeter has, big speaker, digital numeric, color LEDs, plus 20 character wide by 4 rows, allows 20 individual indicators of RF strength. The green through red colors are in harmony with biology precautionary guidelines just like Acoustimeter and ENV RD-10, although there are only 4 lights total, with the flashing modes for green and red there are actually 7 levels. It even has a headphone jack. It is barely small enough for pockets. This meter gets the highest score in my Features table. The only thing missing is a reset button for clearing the Max. (The version 2 has this button.)
The battery life is excellent, drawing 110-120 mA at 3V. The speaker setting appears to have no additional drain.

A direct comparison with the Acoustimeter, reveals some technical details:
The AM-10 uses a 6400 sample / 250ms averaging window. Sampling rate is 25,600 samples/second (40 µs sample width). Narrow pulses produce lower PEAK readings, as the pulse is narrower than the sampling window. The narrower averaging window tends to fluctuate more when measuring high power/high duty sources. The AM-10 is an excellent meter, and for most current RF sources, this sample width works very well.
The SaS Pro has high sampling rate/narrow pulse detection to be 5G waveform compatible. The SaS Pro uses four 65,536 sample / 325 ms averaging windows in a moving average filter (262,144 samples / 1300 ms total window width). Sampling rate is 200,000 samples/second (5 µs sample width). This high sampling rate improves the PEAK accuracy for narrow pulses, as it reduces the likelihood of a pulse being narrower than the sampling window (diluting the measurement). The wide averaging window improves AVG stability for higher power/high duty sources (wireless data links, 5G data streams, ultrawideband (UWB) wireless).

Taking the Safe and Sound Pro outside, with all the other top meters, TF2, Acoustimeter, and Cornet ED88Tplus... I get the following results, knowing I am on the edge of detection for all the meters, Who is best at detecting the weaker signals? I have made the font bold where all the measurements are in the same units. White background indicates below detection threshold, or no result..
Subject of testAM-10ED88TplusSSP 1TF2ENV RD-10AF-5000
Distant towers on Franson Peak, 7 miles away indirect0.02 V/m0.0005 mW/m²
0.0137 V/m
0.400 µW/m²
0.0123 V/m
0.000 mW/m²0.0005 mW/m²
0.0137 V/m
0.000 µW/m²
Excellent audio: detailed cellular whine plus digital dataMedium quality audio: whine presentWeak audio: faint bass thumping
#1 Neighbor Wifi, Dect phone, Cellular hot spot, 200 feet away.0.03 V/m0.0006 mW/m²
0.0150 V/m
1.710 µW/m²
0.0254 V/m
0.000 mW/m²0.0005 mW/m²0.000 µW/m²
Excellent audio: moving along the fenceline, Wifi beacon and Dect buzz are very distinct at various focal points.Weak but distinct audio: buzzing, wifi beacon presentStrong audio: buzzing, bass thumping includes Wifi beacon, and in selected spots with line of sight between the trees the cellular whine is present.
#2 Neighbor Wifi, Dect phone, 327 feet away.0.02 V/m0.0005 mW/m²
0.0137 V/m
0.812 µW/m²
0.0175 V/m
0.000 mW/m²0.0005 mW/m²0.000 µW/m²
Excellent audio: mostly buzzing (new DECT phone), is louder than the Wifi now.Medium quality audioStrong audio: loud buzzing, thumping of wifi beacon.

Looks like neither the TF2 or Cornet ED88Tplus perform well in this test, at least the Cornet has sound analysis to at least get a sniff of the EMR. The SaSPro wins for digital measurements, but the AM still has the best audio sound quality. Once the signal strength is high enough, the SaSPro audio is just as good as the Acoustimeter.
The ENV RD-10 was picking up larger packets from individual cellular handshakes that appear at regular intervals, checking mail etc. Those spikes measured peak 0.0015 mW/m²
The Cornet continues a trend to consistently read lower then other meters, which is Less accurate.

So, what do I recommend?
For the beginner, I recommend being able to measure Magnetic, Electric, and RF in one meter. The Cornet ED88Tplus has excellent value, but now the TF2 offers all three with excellent good sensitivity. I tend to prefer the Cornet for the sound analysis and graph of 15 seconds of history, and it holds the max peak until manually cleared. The TF2 is so sensitive (speaking of magnetic and electric fields, Not RF) it picks up body voltage fields, and moving across magnetic lines of force, thereby requiring some care to be taken to not get false or mis-interpreted readings. The ENV RD-10 also does all 3, is the smallest in size, has the color bar like Cornet, and steps up to a higher level with the capability to record a log when hooked up to a computer (laptop or smartphone). But by itself does not show numbers or any history. These are the usual trade offs, and their prices are very competitive. These are the 3 you generally can't go wrong with.

Having said that, If you're looking for the best RF meter, the Safe and Sound Pro looks like the best replacement for the Acoustimeter, the best digital pulse detection and measurement, actually up to 10 - 12 GHz, which no other meter reviewed here can do.

I have published a video reviewing the best Electrosmog meters. Watch it on Youtube. It includes the Acoustimeter AM-10, Cornet ED-88T, ENV RD-10, Trifield TF2, Safe and Sound Pro, GigaHertz ME-3030B, Dr. Gauss, ENV RD-10, and a few others low on my list. This includes the replacement TF2, which performs much better than my first edition.

For measurements from meters near towers, here I recorded logs from the ENV-RD10 on a trip to Colville, converted to kml format and mapped on Google-Earth. Also added as an overlay at an angle the peak readings from the Safe and Sound Pro 4 months later. Same scale as above.

Update: 2020.Jan The makers of the Safe and Sound Pro have been inspired to make their own meter comparison video, where they analyze why older meters are not so good in a digital world, and why some meters don't work all the time. Gaps in frequency coverage, even the Acoustimeter... Makes it hard to recommend any other meter at all. It's another video worth watching, if you're looking for meters, although much less technical than I tend to prefer. For some people, that's not a bad thing. :-) I agree with everything they said, as it coorelates very well with my experience.


All of my recommendations are based 100% on my evaluation and personal use of these meters. At no time has any company, manufacturer, or vendor ever paid me for the work I do. Zero. Neither have I ever received any test models, production models, or any unannounced upgrades. The only upgrade I have got, I requested and paid for. Nobody tells me when new models or upgrades become available.
Any and all links for purchasing the meters above, are provided solely for your convenience, and may not be the best prices at the time you read this.


device being measured (this column down) device doing the measuring
at zero distance
Safe and Sound Pro Acoustimeter
at zero distance, and
distance for audio to disappear
Zap Checker 180
at zero distance, and
distance to get 5 at 10
Cornet ED-75/85
at zero distance
at zero distance
at zero distance,
and distance to
get <= 0.2mG
Safe and Sound Pro
M 1.2 mg
E 11 V/m
RF 0.003 mW/m²
  0.034 V/m
  0.02 V/m
0.5 inch (1 cm)
10 at sensitivity 9
50 at sensitivity 8

1 inch (2 cm)
Below thresholds Below background front: 10 mG

3 inches (8 cm)
back: 5mG
Acoustimeter AM-10
M 0.2 mg
E 8 V/m
RF 0.047 mW/m²
  0.133 V/m
0.545 µW/m²
0.014 V/m

1.5 in. (4 cm)
12 inches (30 cm) from AM radio
100 at sensitivity 9
60 at sensitivity 8

2 inches (5 cm)
Below thresholds Below background 3 mG

3 inches (8 cm)
Alpha Labs Trifield TF2   0.639 µW/m²
0.016 V/m

1 in. (3 cm)
< 0.02 V/m
no audio detected
60 at sensitivity 10

1.5 inch (4 cm)
Below thresholds Below background 0.15 mG
Canary Hotspotter HS-20
M 0.2 mg
E 15 V/m
RF 0.095 mW/m²
  0.189 V/m
0.412 µW/m²
0.012 V/m
< 0.02 V/m
one brief pop of audio detected
70 at sensitivity 10
9 at sensitivity 8

1/4 inch (0.6 cm)
Below thresholds Below background 0.9 mG only at top half

2 inches (5 cm)
Cornet ED-15SA
M 0.2 mg
E 12 V/m
RF 0.003 mW/m²
  0.034 V/m
0.412 µW/m²
0.012 V/m
< 0.02 V/m
some audio detected in SA mode
60 at sensitivity 9
5 at sensitivity 8

1/4 inch (0.6 cm)
Below thresholds Below background 0.2 mG
Cornet ED-7     < 0.02 V/m
no audio detected
2 at sensitivity 10
Below thresholds Below background >10 mG (1 µT)
5 inches (13 cm)
Cornet ED-85     < 0.02 V/m
no audio detected
90 at sensitivity 9
8 at sensitivity 8

1/2 inch (1.3 cm)
Below thresholds Below background 0.17 mG
Cornet ED-85-EXS
M 0.1 mg
E 12 V/m
RF 0.003 mW/m²
  0.034 V/m
0.396 µW/m²
0.012 V/m
< 0.02 V/m
some audio detected from new display
10 at sensitivity 10

1/2 inch (1.3 cm)
Below thresholds Below background Sound ON: >10 mG

3.5 inches (9 cm)
Sound off: 0.17 mG
Cornet ED-88T
Cornet ED-88T plus
M 0.1 mg
E 14 V/m
RF 0.007 mW/m²
  0.051 V/m
0.614 µW/m²
0.015 V/m

1 in. (3 cm)
< 0.02 V/m
10 at sensitivity 10

1/2 inch (1.3 cm)
Below thresholds Below background Sound ON: 0.2 mG

2.5 inches (6 cm)
Sound off: 0.15mG
M 0.2 mg
E 9 V/m
RF 1.302 mW/m²
  0.701 V/m
0.429 µW/m²
0.013 V/m
< 0.02 V/m
no audio detected
100 at sensitivity 8
55 at sensitivity 6

1.5 inch (4 cm)
Below thresholds 0.0038 V/m 0.15 mG
GQ EMF-390
M 0.2 mg
E 7 V/m
RF 0.049 mW/m²
  0.136 V/m
0.812 µW/m²
0.017 V/m
0.02 V/m
2.5 inches (7 cm)
90 at sensitivity 7
40 at sensitivity 6

3 inches (8 cm)
7.7 mV ADC
0.0139 V/m
0.0005 mW/m²
0.0040 V/m 0.8 mg

1 inch (3 cm)
Latnex AF-5000
M 0.5 mg
E 73 V/m
RF 1.889 mW/m²
  0.843 V/m
2.14 µW/m²
0.028 V/m

1.75 in. (5 cm)
0.03 V/m
1.25 inch (3 cm)
100 at sensitivity 6
40 at sensitivity 5

1.5 inch (3 cm)
8.0 mV ADC
0.015 V/m
0.0006 mW/m²
0.0042 V/m 0.8 mG

1.25 inch (3 cm)
M 0.2 mg
E 14 V/m
RF 0.084 mW/m²
  0.178 V/m
1.13 µW/m²
0.021 V/m

1.75 in. (5 cm)
< 0.02 V/m
no audio detected
90 at sensitivity 8
57 at sensitivity 7

2 inches (5 cm)
Below thresholds   0.25 mG

0.25 inches (0.5 cm)
M 0.1 mg
E 10 V/m
RF 0.064 mW/m²
  0.155 V/m
0.614 µW/m²
0.015 V/m

4 in. (10 cm)
< 0.02 V/m
no audio detected
50 at sensitivity 5
100 at sensitivity 6

4 inches (10 cm)
Below thresholds Below background >10 mG (1 µT)

4 inches (10 cm)
Zap Checker 180
M 0.1 mg
E 2 V/m
RF 0.000 mW/m²
0.396 µW/m²
0.012 V/m
< 0.02 V/m
no audio detected
n/a Below thresholds Below background 0.15 mG
DER EE DE-1007
M 0.2 mg
E 14 V/m
RF 0.001 mW/m²
  0.019 V/m
0.484 µW/m²
0.014 V/m

0.5 in. (1nbsp; cm)
< 0.02 V/m
no audio detected
2 at sensitivity 10
Below thresholds Below background 0.15 mG
Dr. Gauss Meter
M 0.3 mg
E 12 V/m
RF 0.000 mW/m²
0.381 µW/m²
0.012 V/m
< 0.02 V/m
no audio detected
2 at sensitivity 10
Below thresholds Below background n/a
Gigahertz ME 3030B
M 0.1 mg
E 13 V/m
RF 0.002 mW/m²
  0.027 V/m
0.396 µW/m²
0.012 V/m
< 0.02 V/m
no audio detected
2 at sensitivity 10
Below thresholds Below background 0.15 mG
Spectran HF-6060 ver.2     0.42 V/m = 0.446 mW/m²
12 feet (366 cm)
82 at sensitivity 1
0.076 mW/m²
-38.3 dBm
Spectran HF-6065 ver.4
M 0.4 mg
E 57 V/m
  183 holding
RF 0.360 mW/m²
  0.368 V/m
180 µW/m²
0.261 V/m

6 feet (183 cm)
0.56 V/m = 0.832 mW/m²

8 feet (244 cm)
100 at sensitivity 1

up to 7 feet (213 cm)
0.797 mW/m²
-28.6 dBm
0.2023 V/m 4.7 mG

6 inches (15 cm)
RF Explorer 2.4G
M 0.2 mg
E 51 V/m
RF 0.034 mW/m²
  0.113 V/m
0.780 µW/m²
0.017 V/m

1.5 in. (4 cm)
0.03 V/m

1.5 inches (4 cm)
50 at sensitivity 10
40 at sensitivity 9

1 inch (3 cm)
Below thresholds 0.0031 V/m
at background
2.0 mG

1 inch (3 cm)
RF Explorer 2.4G plus 3G Combo     0.27 V/m = 0.193 mW/m² 90 at sensitivity 7
35 at sensitivity 6

9 inches (23 cm)
0.095 mW/m²
0.18 V/m
0.1740 V/m 3.5 mG

4 inches (10 cm)
RF Explorer 6G plus 3G Combo
M 0.2 mg
E 49 V/m
RF 0.046 mW/m²
  0.132 V/m
82.7 µW/m²
0.177 V/m

6 feet (183 cm)
0.16 V/m
0.068 mW/m²

7 feet (213 cm)
55 at sensitivity 7
40 at sensitivity 6

9 inches (23 cm)
0.382 mW/m²
0.38 V/m
0.1330 V/m 2.0 mG

1 inch (3 cm)
RF Explorer 6G     0.09 V/m

16 inches (41 cm)
18 at sensitivity 10

1 inch (3 cm)
0.004 mW/m²
0.04 V/m
0.0046 V/m 7.0 mG

3 inches (8 cm)
device being measured (this column down) TF2
at zero distance
Safe and Sound Pro Acoustimeter
at zero distance, and
distance for audio to disappear
Zap Checker 180
at zero distance, and
distance to get 5 at 10
Cornet ED-75/85
at zero distance
at zero distance
at zero distance,
and distance to
get <= 0.2mG

If you want to see measurements of microwave ovens, cell-phones, routers, electric cars, masts (cell-towers), and other intentionally noisy or seriously noisy equipment, please search youtube or other pages online. I can't and won't go near them intentionally. My primary focus is on reducing or eliminating EMF, and finding weak signals in a non-urban environment, specifically what those with EHS need to keep their recovery zone clear.

Here are some youtube links that I liked:
Excellent introduction to questioning safety of wireless. Measuring WiFi in a school with TES-92
Measuring various cell-phones, wifi, towers, shielding fabric and films with the audio detector, MW1 Electrosmog Detector
Cell phones also emit high levels of magnetic and electric fields
Measuring a microwave oven with the COM EM Monitor, a predecessor to the Acoustimeter
Measuring Wi-Fi from a laptop with the COM EM Meter
Measuring Wi-Fi router with the COM EM Meter
Measuring the Wii with the COM EM Meter and the Cornet
Measuring Bluetooth and Motorola celphone with Cornet
Please see more youtube links, and newer ones, on the Health Links page.

Returning to my story

Here is an exception to my last paragraph... I am adding a section to this page to show normal use in normal areas. Thus going near noisy environments intentionally, or kind of, forced into it...

This is from driving through Airway Heights near Spokane, on Hwy 2:
Click to enlarge
This shows a steady level of activity around -38 dBm, then a spike up to -5 dBm (182.74 mW/m²) when passing an unmarked WSP patrol car, and in the last 7 seconds, the background level went up to -29 dBm, holding fairly steady until I pressed the Hold button at -30 dBm (0.564 mW/m²). The ability to show the last 16 seconds (32 bars) on a graph is Very useful!

When I felt the spike of pain, I glanced at the meter, and pressed the Hold button. Later, after I was Out of the city, I was then able to take this picture. Therefore the color LED bar is only showing one green light.
This was the first time in several years since I have been near Spokane, and so took the opportunity to take many readings with a few meters. This Cornet picture shows the best representation of how I felt about this travelling. Bleh!

For comparison, here is a similar snapshot of the RF levels in rural Republic, I pressed Hold just after passing the center of town.
Click to enlarge
The far left side of the graph, 16 seconds ago, was about when I passed the tower by the library. Notice the levels are not solid on the graph, reflecting the lesser number of transmitters. On other meters that show Average readings, this would be a lower number than the peak/max number, and can also be described as less traffic density. The height on the graph is an indicator of how close the transmitters are, as well as how much energy (Watts) are being pumped out. The difference between urban and rural town are well shown here.
<sarcasm>The city planners must be proud the RF levels here are almost as high as bigger cities.</sarcasm>
At least the radius of the bubble is still nothing like the metro areas.

Unfortunately I had to travel to Spokane again to take dad to the hospital.
Using the Cornet and whip antenna, today's peak was 11 mW/m², so last week's huge spike was a one time sighting.
I stopped briefly at the Walmart parking lot in Airway Heights:
Click to enlarge
The readings for both the whip antenna and the HyperLog antenna were very similar. I regularly saw 3 mW/m² on the whip antenna, unless I held the antenna in a shadowed location, or aimed the HyperLog away from the direction of known radar sites (NOAA weather and Spokane Airport radar), about 1 mile away.
This photo shows a peak at -22.8 dBm. (3 mW/m²) I pressed Hold several times, so the spacing between the radar spikes is not showing 11 seconds. The steady background level is the same as last week. No surprise.

I pre-planned where to wait out the time for dad's tests, and picked the most rural part of Airway Heights (NW Spokane) I could find on the antenna map (short of going all the way around, north into the Spokane River gorge).
Here, the nearest cell-tower is 3 or 4 miles, and the radar is 4½ or 5½ miles distant. Range land here is being carved up and sold as 10 acre lots, and a new house is being built nearby. It looks like a quiet neighborhood with only a dozen houses in view across the Deep Creek gorge. Looks like a good place for testing.
Click to enlarge
With the whip antenna attached, I got readings above the threshold of -55 dBm. I forgot to take notes, so the peak on whip antenna is forgotten.
Here I have the HyperLog antenna attached, to determine direction of the individual noise sources, and I stopped when I found the source of the loudest spikes. Check the compass by looking at the sun angle, and yes it is coming from a radar sweeping a circle every 11 seconds, probably at KGEG Spokane Airport. Bleh! I say again. Not far enough away for me.
I recorded the sounds from the Acoustimeter: 40 seconds 317Kb [mp3] Various noise sources besides the radar can be clearly heard.

With the Acoustimeter mounted on top of the dashboard, I found I could also hear that radar all the way west to Creston, 50 miles away, where the measured spike was up to 0.33 V/m or 0.290 mw/m². Depending on the elevation of the highway, the signal strength was obviously highest at the higher points of the hills. Closer to Spokane, at Reardon, 12 miles from KGEG airport, the spike crossed the 1.0 V/m line, or 2.653 mW/m². That gives you an idea of the range of radar, and the usefullness of these 2 meters. So yes, you will notice the above picture was not as strong, as I was not on a hilltop in line-of-sight.

Click to enlarge
From the Texaco station on Hwy 2, this picture shows the effect of having numerous towers all around: One to the west at 0.6 miles, two to the north at 2.5 and 3 miles, one to the east at 0.5 miles, and more at one mile intervals continuing east on through Airway Heights to Spokane. Steady red in nearly every direction. The appearance of empty fields is an illusion. It is not peaceful here. Yeow! This place is nuts! It took me 3 days to recover from this (unavoidable) trip.
Here is the recording from the Acoustimeter: 32 seconds 247Kb [mp3]

On 2011.Mar.04 when north of Wilbur, I recorded a new sound I do not recognize, that sounds like a starling. 3 seconds 45Kb [mp3] It repeats every 10 seconds like a radar, but is not coming from Spokane, nor does it sound like the familiar bzzzt from the Spokane radar. The strongest measurement was 0.50 V/m. I did not hear this sound again for over a year, until 2012.Jun around Wauconda. I believe it was airborne, or non-stationary like a satelite. Both the source and intensity changed over the hour I observed it.

New product review. Canary Wireless Hotspotter HS-20.

In the left picture, a WiFI router is near the window of neighbor #1's house in the upper left. The distance is 1150 ft. (350m)
In the right picture, (farther up the hill) the house in the upper right is at a distance of 2360 ft. (720m)
The Canary Hotspotter is excellent for identifying WiFi in the 2.4 GHz band. Very quiet, and Ultra sensitive. As mentioned earlier, the Acoustimeter was capable of detecting the WiFi beacon coming from neighbor #1 at 1150 ft., but from the hilltop on the right, the Acoustimeter can not pick up WiFi at this incredible distance.

With the increasing proliferation of WiFi enabled devices, (satellite dish routers and smart meters) the need to identify what is in your neighborhood is becoming a critical issue, even in rural places.
Over two years ago, there was only one neighbor with WiFi. Now (2011) within a 3/4 mile radius, there are six. Depending on placement of the antennas, and the type of material the walls are made of, I can receive 4 bars, 1 bar, 4 bars, 4 bars, 2 bars, and 4 bars of signal from the road. One house has metal siding. This makes the inside literally a microwave oven. Is this safe? Read the links on the next page and prove it to yourself.
By the end of 2012, every house with a satelite internet dish also has WiFi turned on by default.

If I walk down to the fenceline with neighbor #1 along the (now abandoned) training corral, at 140 ft. (43m), the Canary shows 3 bars of signal strength. In the same place, the Cornet shows -54.8 dBm (0.001 mW/m²). This proves the EMF travels farther than the industry wants us to believe (certainly in a clear line of sight).
However now that everybody has been convinced by the industry (making the money at our expense), that wireless is safe, they are boldly increasing signal strength and expanding the coverage radius, as a positive selling point! Bleh!

At the same places where Canary shows 4 bars, I try again the WiFi-Seeker I first tried back in 2010.February:

But it still shows nothing. This little key-chain-cheepie really is worthless.

Question: How can weak signals be measured that do not show up on broadband meters?
Answer: The device that uses a chip (and narrow band filter) to access specific frequencies.
Example: GPS signals from satellite are very, very weak. Cell phone signals (in rural areas) from far away towers are very weak. (Excluding hill tops!)
Lesson: Using the actual chip yields better sensitivity to signals. The Canary Hotspotter is a good example of this. Good GPS units that display signal strength, are as well.
Application: Using an actual cell phone to measure signal strength would make rural valleys measureable, if only the transmitter can be kept off, or disabled. (Yes it can. The simplist way is to remove the SIM card.)

Click to enlarge, show debug codes
On the left is measuring WiFi from Franson Peak, from the same hilltop as the TES photo below. Distance to Franson Peak is 7 miles. I thought picking up WiFi at 2360 ft was outstanding, but at 7 MILES !?! I shudder at the implications.
On the right is a Samsung SGH-T139 (with No service, and in Debug mode using a Service Code) measuring 850 Mhz cell reception as I map the EMR hot spots and dead zones around Lambert Creek. It can be clearly seen, where 6 full bars of reception match up with clear line of sight with Franson Pk to the north, contrasts with 0 bars in deep valleys and south sides of hills. One thing I have learned from this mapping project, is how small the dead zone is in the deepest part of the valley.

Just removing the SIM card, or putting the phone in Airplane Mode does NOT make a cell phone free from emissions. The T139 shown above is very quiet, as it is an older design, slow and small screen, only capable of 2G communications. But test the newer smart phones, and wow! Do you really want this device in your pocket? All phone manuals say to keep one inch away from your body!
But EVEN IN AIRPLANE MODE, or with the SIM card removed, so that it does not Transmit, it is still capable of delivering EMR to you as it's computer emissions are measureable.
It is reported (as I have not touched one to measure myself) that iPhones are even Worse in this way.
The following 3 tests are available in original WAV format plus video as a movie [AVI format], or as audio only [compressed MP3 format].

Measuring Samsung SGH-A707 with Acoustimeter. Phone is ON, in standby as it is closed, but has no SIM card. Same as in Airplane Mode, the device IS STILL RUNNING, and does this buzzing sequence every 30 or 40 seconds.
Click for 14 seconds 1.0Mb [AVI]
Click for 10 seconds 81Kb [MP3]

Now the phone is open, and has woken up. Now it is fully active! The screen simply says to insert a SIM card. You can hear the phone's processor thinking All the time. This may be normal for a desktop computer, but to hold it close to your body exposes You to unhealthy electrosmog.
Click for 30 seconds 2.8Mb [AVI]
Click for 18 seconds 141Kb [MP3] This is interesting to hear. Acoustimeter measures 0.07 V/m

If and when it is allowed to transmit to the nearest tower, 7 miles away, it measures 6.0 V/m

Here the phone is closed again, but still ON in standby. Now showing the magnetic field emissions with a gauss meter.
Click for 12 seconds 0.9Mb [AVI]
Click for 12 seconds 94Kb [MP3]
The needle dances above 10  mG when doing whatever it is doing every 30 or 40 seconds.

New product review: TES-593
My evaluation is above in a paragraph between specs and emissions. But in addition to that, here is a picture on top of one ridgeline here:

Compare 0.0049 V/m up here where 6 bars of Cell tower reception can be found, my headache grows, and the Acoustimeter whines,
With the valley floor at 0.0029 V/m. where there are 0 bars of Cell tower reception, and the Acoustimter is silent.

Going toward town and cell towers is very different. Downtown Republic and Colville are consistant with the Acoustimeter's readings.
0.659 V/m person at gas station on a cell phone, 10 ft. away
0.070 V/m 5 miles from Colville and towers
0.119 V/m 4 miles from Colville
0.164 V/m 3 miles from Colville
0.275 V/m 2 miles from Colville
0.310 V/m 1 mile from Colville
0.846 V/m intolerable parking lot in Colville, WA

New product review: Cornet ED-15SA
The spectrum analysis mode lets you see exactly what activity is happening between 2.4 and 2.5 GHz.
The background level is between -90 and -92 dBm.

Revisiting the southwest neighbor (#3) along
the county road. 4 bars on the Canary

Latest WiFi to the northwest, (#2)
shows as 1 or 2 bars on the Canary Hotspotter

driving through Republic


southeast neighbor #1
with a buzz like a Dect phone

southeast neighbor #1 with
Spread Spectrum WiFi beacon ON
does not show up on the Canary,
so is not 802.11b/g/n.

southeast neighbor #1
with original WiFi channel 1 back ON again
shows as 3 bars on the Canary Hotspotter

Update and personal testimonial

Also during 2010, my mother's symptoms of pain and insomnia increased, as her sensitivity also increased. What was this family exposed to? Since genetics can be altered by the environment, we seem to have all been affected something in common to the  4  now 3 of us here...
On the morning of 2011.Mar.27, mother did not wake up. She died during the night, and the coroner decided it was a heart attack, but we here know her symptoms exceeded that simple official cause. Rest in peace.

My own health continued to worsen... but on 2011.Aug.02 the feeling outside changed, it no longer hurt. The next morning I impressed neighbor #1 when I went over to thank him for turning off his WiFi. I can now go outside in our own yard again. The connection between exposure and symptoms is undeniable.

2011.Oct.05 This week, on one morning, finally for the first time in several years, I was able to say I woke up without any head pain. The tumor-like ear infection has subsided as well, although my right ear continues to be plugged half of the time. Since that morning, my headache levels continue to be low, having returned to pre-2009 levels and patterns (going up when in areas with cellular reception). What has not recovered, is my brain fog, and memory. I am still tired, and making mistakes everywhere I go.

2011.Nov.06 Too good to last. My tinitus which was receeding, has now jumped back up, and also spread some to the other ear. Also my right ear is back to being blocked. How frustrating. I've been checking around this week, but no Wi-Fi signals can be detected at home. However, there is now something else that makes a buzzing and pulsating sound on the Acoustimeter. Sounds similar to a DECT phone, but with a pause in the data or beacon packets about once per second. Audio recording: 4 seconds 35Kb [mp3]. While it is annoying, it does not rise to the pain level as before.

2011.Nov.26 Went outside today and got a sharp headache. Checked the fenceline with neighbor #1, verified WiFi beacon is back on. Audio recording: 5 seconds 40Kb [mp3] on the Acoustimeter at a distance of 140 ft. (43m)

2011.Nov.27 Did not sleep well last night, with the WiFi on all night, and then noticed the WiFi was turned off before noon. The only good thing about these incidents, is how it makes the difference stand out, like night and day. If I can stay inside, it is more like a cloudy day, where the signal strength is low enough to be annoying but difficult to feel when it is turned on or off. But go outside where the meters can pick it up, and I can feel the status myself without needing to check a meter to know when it is on.

2011.Nov.28 Back on again, although somewhat different. Probably trying to find a frequency that does not bother me. Nice effort, but misguided.

2011.Nov.30 More bad news. The last neighbor without active electrosmog emissions (to the west, designated #2 by distance), has installed and activated a WiFi router with their new satellite dish.

2011.Dec.09 Yet more bad news. Another WiFi has appeared closer to my mailbox, so that now the daily trek to the main road takes me past 5 WiFi beacons. It is just too much, and too painful. With the high level of exercise required to trek the 1 mile distance, and climb 150 ft. of elevation, when my blood pressure climbs normally, it just puts too much pressure on my head, as the headache becomes a migraine. Also for the first time in several years, I am not riding to the mailbox because my back is not only out, but defies efforts by the chiropractor to keep it in. Also with Cowgirl dead, I don't really have a stable equine partner to travel on the icy paths. I must move the mailbox so that I don't travel west by foot anymore.

2012.Jan.07 Woke up this morning with a sharp headache. My brother also has a headache (throbbing with dizziness) where there was none yesterday. When I check the fenceline with the southeast neighbor #1, sure enough, it is back on again after being off for 3 weeks. On the positive side, this allowed me to take new recordings with the new Cornet Spectrum Analysis meter.
Audio recordings on the Acoustimeter at a distance of 140 ft. (43m):
18 seconds 147Kb [mp3] Spread spectrum WiFi Beacon plus DECT buzz plus some data transmissions. Peak measured 0.05 V/m
38 seconds 309Kb [mp3] Moving along the fenceline slightly decreases the DECT buzz. This recording is the beacon plus some data transmissions and a mystery whine that could be a different data transmission.
9 seconds 76Kb [mp3] Different location along the fenceline, increases the DECT buzz.
Cheers! the WiFi is back off around 4pm.

2012.Apr.04 Noticed and measured some positive changes from neighbor #2, didn't last.

2012.Jun.17 I briefly mentioned my back a few paragraphs above, but the inflammation this year has gotten progressively worse, especially since November. (see a connection yet??) Also my knees and elbow joints are also becoming more painful (doctor says inflammed), and refusing to heal. I am riding less, and thus getting away from the neighbor's wifi and active satellite dish less. Things are not looking up.

2012.Jul.20-25 Finally a change worth writing about! We had a severe thunderstorm squall line move across the county, that snapped trees and power poles with 100 mph downdraft winds. [photo1] [photo 2] Power lines down Everywhere, in an 80 mile swath from Keller to Grand Forks, BC. Power was out for 5 days at my location, and is still off in parts of southern county 3 weeks later. The relevance to EHS is that for 2 whole days, all cellular towers were down, probably after their generators ran out of fuel. For 48 hours, I felt Normal. For the first time in, what now? 6 years, my bruised feeling like a concussion was Gone! I can now link that particular symptom to the cellular blanket of electrosmog, as when Franson Peak came back on, that feeling came back. This was 2 days before any other power lines were restored here. That restoration brought a different feeling. And it also took 1-2 days for neighbor #2 and #3 to get their WiFi back on. So I had 3 markedly unique symptoms go away, and come back with 2 days between each switch. Wow.

2013.Jul New developmemts here for 2013 are less related to EMR, and are therefore going to be told elsewhere on another page. However, the dog bite incident did lead to spending too much time in court, which has further impacted my health, and much reduced my ability, and riding time. I find it very disturbing and troubling that my dependance and reliance on electronic devices has grown over the last couple years, to a level that is also affecting me, despite the care taken to choose to use only devices with low emissions, and nothing with intentional wireless capability.
The higher stress caused by threatening and bullying tactics against me by some people, combined with the need for security, in this bad neighborhood has become an enemy in and of itself. The obvious solution to go low-tech again, does not seem as possible while I live here. Therefore the only way to recovery is to move once again. If I figure out Where, I'll be receptive to doing so again.

Dad suffered two strokes in 2013, and caring for him after he was released from the hospital became a 24/7 nursing care job for myself and my brother. The stress of the court cases, and of losing yet another horse, has left me completely burnt out.

By mid 2014, I started recording on my calendar increased pain levels, but it took me until September to get bad enough to realize the WiFi levels had increased. I attempted again to have a dialog with neighbor #1, and managed to get the WiFi turned off when not in use. In November a new WiFi router was turned on, replacing the previous one. This time I stopped complaining when it was left on, because it's placement was clearly on the opposite side of the house, and so was radiating less in my direction. Seeing I would not get any further progress, I chose to reward him by ceasing my nagging. The new placement was clearly better, that being a relative term.

Now in 2015, while I still call the situation with neighbor #1 "better" than it was last summer, on is still on, and my health continues to worsen. Since there are numerous other WiFi in the valley now, it is simply not possible to feel well outside. Only up in the isolated valleys of the National Forest will I find any relief now.

Seeking to reduce the exposure to the constant low-level WiFi and cordless phone from neighbor #1, I did build a metal fence along the fenceline this summer. It helps, and right in front of the metal wall on my side, the meters do show a shadow. But I can still pick up his WiFi beacon at my porch. After several measurements I have determined the microwaves are bouncing off the trees over the wall, more than just refracting over the wall. Bummer. It is better, but not great.

The beaver saga finally reached a critical level that closed my trail across the creek to my mailbox. The mailbox hereafter is back where it was originally.

Also this year, 3 monopole towers are being built in the Curlew Lake valley, in addition to last years 2 closer to, and around the town of Republic, for a population of what? 2000. The last (almost) remote corner of Washington is soon to be brought into the 21st century. I believe my cellular reception maps will soon be outdated and invalid. Bad news all around.

2015.Oct.24 My pain levels jumped up, and upon checking the yard for new wireless signals, the WiFi is back on. Not talking about the new DSL router, but the original WiFi router that has been off for over a year. And it is placed in the near-side window, so that the signal strength is at 4 bars now.
Now my pain levels no longer go below level 3, and are level 4 most days. Easily up to 5 if I go outside. 6 if I do anything outside. My tinitus levels are 8 or 9, almost loud enough to impinge on my normal hearing.
Nov.07 Feels different this morning. Yea! The loud WiFi coming from neighbor #1 is Off! Thank you. . . hoping it stays off.

Every Saturday morning I lay in bed at pain level 2. About 6:30 am without changing my location or shielding amount, the pain level pokes at me, jumps up, and stays above 3. Increased usage of wireless outside every weekend is as obvious to me as the sun rising above the horizon. Like a sunburn, which is also radiation of a different wavelength.
2015.Dec.28 Notice another new WiFi beacon, named Emerald Moose, from neighbor #4 across the valley.

2016, Feb.08. Pain levels jump up. I think the new 4G service on Franson peak is on. (I confirm this a couple months later by recording spectrum graphs.)
Mar.15. Pain levels are higher again. I am now measuring 1 to 2 bars of WiFi from neighbor #2 to the NorthWest. New router, louder and stronger signal strength. More bad news. Pain levels never go below 3 any more, not even at night. Jumps up to 4 every day upon getting up and moving around. Walking to the mailbox past 9 WiFi emissions, now brings heart arrhythmia, shortness of breath, and lots of extra pain, both in my head and my back, which has not healed after last year's accidents. I'm having trouble walking, and no longer enjoy going outside. My brother who is also being affected very much by the increased microwave levels, (memory, vision loss, clumsy, autism, inconsistent taste and ability to smell) is also continuing to worsen.
On the bright side, the two new towers around Curlew Lake are still not hosting cellular services. It looks like they are for NCI DataCom internet only, using 5GHz WiFi channels.

233 days after it first appeared, the stingray hotspot at neighbor #1 is off, yea!
Nope, back on again before he went to work. Boo!

My tinitus reaches level 10, loud enough to interfere with normal hearing. Over the last year my symptoms of muscle tension, joint pain, and constant strong headaches, have risen as the increase in microwave levels have gone up. I now get actual muscle cramps when around WiFi, that spike up when I go outside, and drop down when I leave town or go inside my safe(r) room.
New symptoms of cardovascular and circulatory trouble have appeared, just like pre-diabetes type 3, because clearly I have not listened to the headaches and removed myself from the exposures.
Today I get another muscle seizure, this time like getting punched in the jaw, my jaw muscle clamped suddenly. My teeth hurt from the impact.

Power outage lasts 6.7 hours. For the first day in over a year, it feels okay to go outside. Too bad my symptoms don't go away fast enough to get any useful work done outside.

My brother and I have worsened over the last month. Today I feel compelled to do a scan for new WiFi, and bingo! there is a new signal in the neighborhood. Cloaked AP on channel 1. Yeah, you think hiding your name will keep me from noticing? That is silly.

It is quieter inside. It is quieter outside. The power is on. What gives? I do a scan... The AT&T stingray Micro-Cell is off. Hooray! I don't know why it is off, but I like it. How long will this last?
12 or 13 hours. At least it stayed off overnight for sleeping hours. Note in log it is back on. At least I got one night of peaceful sleep, increasing and reinforcing the contrast between on and off.

Neighbor #1 actually engages in a conversation with me by email. Seems he just found my web page. Will it do any good?

This morning I felt motivated to check for new Wifi outside, and yep, a third one at neighbor #1. NETGEAR77
It's so noisy outside now that it is harder to feel the addition of any new ones, so it may have been on for a couple weeks...
My brother has been feeling worse, and the doctor said his level of memory disfunction is only explainable in western medicine by trauma to the brain. So can we blame the neighbor for that injury?
Better question, since I have made it clear to him and his wife that they are causing us harm, does this cross a threshold in the criminal code in causing intentional or pre-meditated harm and assault?
The law in Queensland, Australia does include "electrical force" in their criminal law code for assault. Too bad Washington state does not.
My tinitus has increased to a new level: 12. Breaking the 10-scale by interfering with normal hearing now. Pain levels reach 5 (constantly strong, intermittantly sharp) every day now.
Our desire to not live here anymore has only intensified, but economics and reality make moving nearly impossible. At the very least I can say with conviction, I no longer feel like this neighborhood is my home. I no longer feel any interest in keeping up with the local news.

This month I'm having more trouble getting any restful sleep, even in my shielded bed, and waking up at pain level 4. Going outside is much worse, quickly up to 5 and sometimes 6 (sharp constant pain). Today I was motivated to find the source, so I scanned for new cellular signals on my bi-monthly trip into town. I see At&t has added new 4G band 17 antennas to Union Ridge tower. Bummer.
Upon sharing this bad news with a nearby friend also suffering from EMFIS/EHS, she said both her and her husband for the last 3 weeks have been waking up during the night and experiencing more pain. Ding-ding-ding, we have coorelation and confirmation.

On my next trip into town, I pulled out the rtl-sdr and did a spectrum scan for changes. I can see new activity has been added since I last published graphs in 2016, right where 4G band 71 should be. More bummer. Looks like my coverage maps above are becoming dated.

I started experiencing muscle cramps on this day, primarily in my mid and lower back, eventually pulling my spine out of alignment. Happened right at my mailbox, which is where that neighbor added 2 new wifi (router beacons) recently, Dec.10, and yes I've been getting sharp headaches down here for the last few months, prompting me to take measurements and prove what has been added to the local environment. <sarcasm>Thank you Dan and Connie</sarcasm>, so now I'm no longer walking to the mailbox.

Also in the news, OneWeb has launched their first satellite broadband birds late 2019.Feb.27 for coverage in the Ku-band from a 750 mile orbital constellation. More microwave blanketing from space is not good.

My symptoms have increased when near people with cel phones. Headaches can be ignored somewhat, and are invisible to others around me, but muscle cramps pulling my back into a stooped and crooked position, is more visible.
If you see people limping around, with an angry face towards other people on their phone, who are clueless about EMR and the microwaves they are addicted to, this is why.

More interesting, now that the snow is melted, getting out to the non-service areas of the national forest, actually relieve my headaches (not new information), but do relieve my back pain also. This is new. It takes an hour to get the full effect, but if you see me walking around like a normal person away from EMF sources, it's not because I'm normal or faking it!!! When the symptom response is correctly correlated with the correct triggers, it becomes clear.
Further challenge response testing has drawn a line of symptom relief at 1500-2000 ft from the neighbors houses. So localized wifi and in-home cellular hot spots remain the primary concern, with hilltops being next up for high levels of cellular reception.

Chest pains increasing. Chronic fatigue increasing. Tinitus increasing, brain fog and poor memory increasing. Miserable when at home, because home is too close to the neighbors. Doing anything outside at home is no longer tolerable. Staying inside where the EMR levels are lower, is tolerable.
I've measured and confirmed the extra noise levels, moreso than earlier in the month, is coming from new antennas on Franson Peak. Looks like TMobile has discovered an underserved area and is installing service to compete with AT&T. Detestible things. The selfishness and injustice is so depressing.
Their deployment of 600 MHz spectrum will be a stepping stone to 5G. 5G sub-Gigahertz will soon reach here too.
I see fewer birds this year. Some species of bees are missing. All this ignorance and indifference is killing the biosphere too.

Had a seizure or muscle cramp in my back, right when FedEx delivered a package. It was not the first time, nor the last, as this coorelation between muscle spasms, cramps, and wireless exposure became a serious issue this year. From this incident, I started making videos of the meter readings, and have published the results here on Youtube.

The tower southwest of Republic, today I see a new sector holder on it, with 3 new antennas. Their length indicates cellular coverage here has just increased for the town of Republic. Since this location is down in a bowl, the hills will prevent this one from reaching my home.
But the 2 newer towers around Curlew Lake, have now added cellular antennas, as a new telecom provider has finally moved in, and this has significantly raised the RF levels up the Curlew valley.
I have published the new meter readings and cellular measurements here on Youtube.

Going outside feels extra painful today. Looking around I see neighbor #1 has a new Starlink dish. That transmits at 14GHz, above the range of all consumer meters. There are also 3 new WiFi access points, transmitting beacons continuously. That makes 6 wifi from one neighbor. Seriously?
All day my muscles feel like I've run a marathon, but am not able to rest.
Shoveling snow this morning is excruciating. Then I got muscle cramps or seizure.
I am tired, my muscles stayed stiff and tight all day, and I am Not ok with this.
Going outside results in quick change to how I feel. Muscles are tight and cramping. Staying inside is clearly better than going outside. Not as good as 2 weeks ago, but "better"
I am not sleeping as well, even inside where I have some shielding. I am really Not ok with this, and I can not express how unhappy I am with neighbors who ignore my requests and warnings, and instead shouts insults and gestures. What do you call someone who hurts others intentionally, knowingly, on purpose?
Another Starlink 0.90 Miles away. This is the new problem, if anyone with EHS moves to a remote rural location, there is a higher chance of neighbors getting Starlink, because all other internet methods are not functional choices.
I was attacked by a dog, knocked me down. That neighbor #5 the dog owner, was only 30 feet away, he claimed his dog is friendly. This impact knocked my back out, and my elbow and hip are sore for 2 to 3 weeks.
Something turned off? It is quieter after noon.
I confirm with measurements, that neighbor #1 has turned off his AT&T Hotspot. Yea! The Starlink and Wifi jackhammer? 5 are still there. I still feel very badly outside.
The noise levels have increased today along neighbor #1 fenceline from 2 to 70.2 µW/m². The new buzzing noise reaches all the way to the porch.
I have run out of patience with neighbor #1. Every time he sees me he makes rude and insulting gestures, verbal curses, and other childish behavior. I have no evidence remaining he can be trusted. I have video of him prowling on my side of the property line. That is called tresspassing, now including physically, rather than just electronically.
I put up signs asking for No Wifi, and what happens?
Today the wifi coming from neighbor #1 is now up to 9 beacons, of which 5 are strong enough to flood my building area with usable signal.
This is EVIL levels of intentional assault.
The long delayed project to repaint the house with Y-Shield has begun.
First coat on my bedroom wall. I immediately notice the difference, meaning, the same day.
First coat on the last wall. I immediately notice the difference. Lots of relief inside now. Not as quiet as last year perhaps, but much better.
The difference going outside is much more noticable, like going from the shade out into the harsh sunlight.
Neighbor #1 finally turned off "Frontier1760" and another, so now only 5 beacons on. I take down 3 signs as a reward. After 8 months of "You're getting colder" I can finally say "You're getting warmer."
Every time I work to enlarge the shield along the fenceline, my symptoms jump up, because I spent too much time outside my shielding, within line of sight of the Starlink and Wifi transmitters. On this day, new symptoms followed, weakness of my left leg. So now not only do I get very exhausted to the point I can't walk to the mailbox anymore, now my other muscles are taking a hit.
The shield definitely helps. It is just not a long term or perfect solution. I am little better than a prisioner in a locked box, either stay inside and feel ok, or go outside and get worse.
My guts stop moving again. When this first appeared 15 months ago, the hospital took scans and determined there was no tumor, no cancer, no twisted gut, nothing looked wrong. Take laxatives and go home. The doctor even told me I was full of s***. Was that an insult?
My situation worsens. The laxatives no longer have any effect. I can't eat. My muscles are weaker, and my parasympathetic nervous system is shutting down.
Surprisingly, I survived. Going several weeks unable to eat very much, was terrible enought I was sure I was close to dying, but I pulled through. I've also stayed inside as much as possible.
Another new Wifi coming from up the valley, something made by LG Innotek... Broadcasting as LREL6323S ... LG promotes: "With SmartThinQ technology, you can even control the range from your smartphone." Why, just why? Hope it has good password protection!
If we're keeping count, there are now 59 wifi beacons within 2/3 mile. I've learned that in cold and clear weather, those transmissions can be heard a long way.

I recovered once 26 years ago, it took 6 years to do so, to rebuild the myelin sheaths of my nervous system. I don't think I can recover this time, with all the cell towers, satellites, and neighbors broadcasting WiFi 24/7. There is nowhere to hide anymore.

For the record, I have never smoked, never drink alcohol, and have never used drugs. (pain killers like ibuprofin excluded) So the usual reasons for people to become failures, does not apply to me and my family.

We continue to endure here (translate that as Suffer for years under the Torture). It is sad some people don't believe warnings unless it affects them also.

Today, electrosensitives are the canary.    They are being ignored.

If you are looking for a video presentation about EHS, but don't want to wait over an hour into the video before they present solid evidence? I don't pussy foot around wasting time asking If or Maybe.
Now available on DVD - Volume 1 for 2012
EMR aka Electrosmog -- Current Research and News Documentaries

A collection of 3 hours of hard hitting proof that Radio Frequency Electro Magnetic Radiation (wireless) is bad for your health.
Plus 20 minutes of my own video recordings showing me measuring my rural location, hilltops, and venturing into urban areas.
Now available on DVD - Volume 2 for 2015
The two recommended Documentary Films, plus more compelling research on Autism, and Trauma to Blood cells

The ICNIRP guidlenes for cell tower radiation exposure are the worst in the world. Several health effects have been reported much below these ICNIRP guidelines.

The ICNIRP state that these guidelines are only for short term exposure and considers only thermal effects and does not take account non thermal effects which are more harmful and occurs much below thermal effects. According to calculations the ICNIRP guidleines implies that a human body can be safely kept in a microwave oven for 1166 secs = 19 minutes per day!!

In USA, max. SAR limit for cell phones is 1.6W/Kg which is for 6 minutes. It has a safety margin of 3 to 4, so a person should not use cell phone for more than 18 to 24 minutes per day. This information is not commonly given to users.

The amount of electromagnetic radiation we are exposure to, has increased 1 quintillion times over background levels. (1 followed by 18 zeros)

To measure the earth's schuman resonance now, scientists must go to the open ocean to "hear" it.

Have you read the fine print in your phone's manual? It says to keep away from skin at least 1 inch.

Do you know the mobile industry has written their License Agreements to have NO LIABILITY for health claims.

Scientists have authored 28,000 papers, of which 14,000 are peer reviewed, published in scientific journals, over several decades now, showing clear cases of harm. Yet in the media we only hear, There is no solid evidence for harm , there is no convincing evidence, or there is no valid evidence for harm... but be sure, there IS evidence.

Do you see a problem yet?

Educate yourself. Learn for yourself. Read or watch presentations at Part 4.

[Home] [Next] [Willapa Valley photos] [Republic photos] [e-Mail me]

© 2010-2022   All Rights Reserved.
Stewart Andreason

ehs1.html Updated 2022.Jul.26