Stewart's Corral

RF Calculator
page 65

visitor #

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

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
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

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 my LIBRARY of links.

Index About Me and EHS
and Awareness.
Real or imagined

About me, part 1
How it started
About me, part 2, Living with EHS
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 2019
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.

[Home] [e-Mail me]

© 2010-2020   All Rights Reserved.
Stewart Andreason

rf-calc.html Updated 2020.Oct.31