Author Archive: EM Watch
Radio-Frequency EMF Meters
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Radio-frequency EMF is produced by all transmitters of radio signals. This includes transmitters outside of the home, and some inside.
Outside the home are TV station and radio antennae, mobile phone masts, and radar transmitters (at airports and some military installations), to name a few.
Inside the home are wi-fi routers and other wi-fi devices, computers, electronic pads, mobile phones, cordless devices such as phones and baby monitors, wireless burglar alarm components, wireless heating control units, microwave ovens, smart TV units and smart meters – to name a few.
Radio-frequency EMF has been associated in numerous studies with many biological effects and health issues. Most of us are exposed to ever-increasing EMF levels, so we believe that it makes a lot of sense for everyone to monitor the level of their exposure, and possibly take action to reduce it.
A good radio-frequency EMF meter thus becomes a basic necessity. With its help, most people can find various ways to reduce their exposure, and that of their family.
Don’t confuse radio-frequency EMF with low-frequency EMF. These are two entirely different kinds of radiation. Good radio-frequency EMF meters tend to be expensive, unfortunately.
The best meters are what is known as triple-axis. They measure the EMF in three different planes at the same time, and sum those components into a single measurement. It saves you having to do it manually, as you would with a single-axis meter, which just measures the radiation in one plane.
But most triple-axis meters allow you to operate the meter in one plane as well, which can be useful when you are trying to locate an EMF source. (Point the meter, and see which direction gives the highest reading.)
Some meters are more sensitive than others. A more sensitive meter will be able to detect a lower level of radiation – nice to have, but not essential if you are just trying to reduce very high EMF levels to something less extreme.
When comparing the specifications of various meters, bear in mind that they may all be using different units of measurement (e.g. mV/m or V/m or uW/m2 or mW/m2 or W/m2 or mW/cm2 or uW/cm2 or nW/cm2) Some of these units result in measurement values with lots of decimals, which may make them harder to understand.
I prefer mV/m or uW/m2. Many meters allow you to choose the measurement unit. Make sure you know what units you are using when making comparisons.
In general, radio-frequency EMF meters are somewhat harder to use than low-frequency EMF meters, and it helps if you are technically minded.
Here are some of the meters which seem to offer good features at reasonable value.
If in UK, and the product is available there, you will be directed to Amazon.co.uk
- Measuring range: 38mv ~ 11v/m (4 1/2 digits with maximum reading 19999)
- Sensor type : Electrical field (E) / Frequency Range : 50MHz ~ 3.5GHz
- Measurement units: mV/m , V/m , µA/m , mA/m , µW/m2,mW/m2 , µW/cm2
- High dynamic range due to three- channel digital results processing w/ Instantaneous value (maximum and average value measured)
- Non-directional (isotropic) measurement with three- channel measurement sensor (X,Y and Z)
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- Reliable meter for measuring RF and HF Radiation from sources such as Cell Phones, Cell Towers, Smart meters, Wifi modems
- Can be operated by both beginner and advanced users; beginners should measure µW/cm2, while advanced users can use V/m or µW/m2 as their unit of measurement
- For an environment to be considered safe, your readings should not exceed 0.003 µW/cm2 (or equivalent for a different unit)
- Directional characteristic: Isotropic, triaxial.Measurement range selection: one continuous range.
- Free technical support provided for every purchase; beginners guide available for download in this listing
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- 50 MHz to 3.5 GHz frequency range
- For isotropic measurements of electromagnetic fields
- Non-directional (isotropic ) measurement with three-channel measurement probe
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- Wide range of frequencies, up to 8 GHxz
- Simultaneous peak and average readings
- Built-in sound to help identify EMF type
- Indicator lights for ease of use
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Low-frequency EMF Meters
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Low-frequency EMF refers to the very bottom end of the electromagnetic spectrum, well below radio frequencies.
In our daily lives, low-frequency EMF is very pervasive, for one reason: our mains electric power falls within this range, with a frequency of 50 or 60 cycles per second (depending on country).
Low-frequency EMF has one peculiar quality: the magnetic portion and the electrical portion behave differently, and can be measured separately.
Some EMF meters measure both magnetic and electrical fields, others just measure the magnetic field. The latter are sometimes called Gaussmeters, because Gauss is one unit of measure for magnetic fields. (The other unit is Tesla.)
The magnetic field is thought to have more relevance for our health because it is capable of penetrating a person’s body, whereas the electric field has no penetrating power.
Low-frequency magnetic fields will pass through just about anything, including rock, concrete, brick walls and steel, so they have no trouble going through a human body – bones and all.
There are a number of very cheap meters in this category, but their sensitivity is usually poor, and accuracy may not be great either.
We have selected a few that we think are of good quality, and in the case of the Tenmars TM-192, we have used this meter for professional work and can recommend it.
If in UK, and the product is available there, you will be directed to Amazon.co.uk
- Meter is used to measure electromagnetic fields of extremely low frequency (ELF0 of 30 to 300Hz
- Display: 3-1/2 digits LCD, maximum reading 1999.Range: 200/2000 mG,20/200μT.
- Resolution: 0.1/1 mG or 0.01/0.1 μT. Frequency response: 30Hz to 300Hz.
- Accuracy: ± (2.5%+6dgt) at 50Hz/60Hz. Over load: LCD display “OL”.
- Rate: 2.5 times per second.Battery: 9V NEDA 1604, IEC 6F22 or JIS 006P. Approximate 100 hours.
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- Uses 3 internal orthogonal sensors to test a wide range of ELF magnetic fields, independent of measurement angle
- The tester is designed to provide user a quick, reliable and easy way to measure magnetic field radiation levels around power lines, home appliances and industrial devices
- The tester is a cost-effective hand-held instrument that was designed and calibrated to measure magnetic field radiation at different bandwidths from 30Hz to 2000Hz
- Display micro Tesla (?T) or milli Gauss (mG) units
- Data hold (HOLD), maximum hold (MAX) and minimum hold (MIN) functions
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- Makes measuring AC magnetic fields a breeze
- Simple 1 button operation
- Readout in both milliGauss and microTesla
- Wide range: 0.1-199.9 mG; 0.01-19.99 microT
- Accuracy: 4% ±3 digits at 50/60 Hz
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Cellphone Protection Pouch
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A Cellphone Protection Pouch is great if you like to carry your cellphone in your pocket, like I usually do.
Cellphones communicate frequently with the nearest mast, even when you are not using the phone. This creates an EMF from your phone which travels in all directions, including through your body.
Not all pouches work in the same way. The ones I prefer shield you from most of your cellphone’s radiation while you are carrying it, but you can still receive calls and messages. As long as the phone is in the pouch, its radiation only travels away from your body, not towards it.
Some pouches offer the option, either to screen radiation in all directions (phone will not work) or just shield your body from the phone’s radiation (phone is still able to receive and transmit).
These pouches have two compartments, and you can carry your cellphone in either one. In the inner compartment, the cellphone is surrounded by radiation screening material, so no signal reaches the phone or escapes from it. This means your phone can’t receive messages or calls. (It may try to transmit, but the radio signals won’t escape the pouch.)
But when in the outer compartment, your cellphone is screened on only one side – the side next to your body. Now the phone can still receive and transmit via the unshielded side of the pouch. So your cellphone is still functioning, but you can carry it safely. You can answer calls as usual, just slide the phone out from the pouch first.
There are several varieties to choose from. Here are some of the ones we like best.
If in UK, you will be directed to Amazon.co.uk
- POWERFUL BODY PROTECTION: This anti-EMR phone holder from Shield Your Body offers powerful protection from electromagnetic field exposure emitted by mobile phones, reducing your body’s radiation exposure as much as 99%.
- SHIELDS ONE ONE SIDE ONLY: Our anti-radiation technology protects from wireless electromagnetic radiation on one side only (the back of the Pouch, between your phone and your body) so you can deflect harmful EMF radiation away from your body – without interfering with phone reception, function or battery life.
- 2 CASE SIZE OPTIONS: This wallet-size phone bag is the regular, which is 6.75” tall x 3.75” wide, designed for phones/cases up to 2.75 wide, and available in black, blue, green, orange, purple, and red. Also available in the larger XL size.
- IDEAL FOR MEN, WOMEN & KIDS: This portable radiation protector is made with high-quality, stylish neoprene and features a belt loop. It’s even thin enough to fit in your pocket! This pouch is essential for anyone concerned about EMF radiation. This radiation blocker is an excellent safety tool for kids and adults of all ages. Use it to Shield Your Body and reproductive organs from harmful wireless EMF radiation. It makes an excellent gift and is built to last.
- REAL SCIENCE & LIFETIME WARRANTY: SYB invented the EMF Phone Pouch and offers a lifetime warranty. Don’t trust lower-quality competitors or be fooled by EMF products like pendants, stickers or charms that claim to harmonize or neutralize EMF radiation without any scientific proof. Our Phone Pouch uses universally-accepted and scientifically verified principles to shield your body from EMF radiation. The rear of each Pouch is lined with a super fine mesh of metallic fibers that forms a shield to
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- PROTECT YOUR PRIVACY: The faraday bag protects chip technology smart-cards from hackers RFID readers in the range of 10 kHz-30 GHz.
- SIGNAL BLOCKING BAG: Inner layer blocks signals, outer leather black layer can be used as a normal case make sure block signal.
- CONVENIENT TO USE: Putting ID card, bank card such as IC magnetism card into the faraday bag, it can avoid magnetism lost and info leak. Size: 19.7*10.1*1.5cm / 7.8*3.9*0.6inches.
- FARADAY BAG KEY FOB: This cell phone faraday bag can block GPS and car-key signal to prevent tracking, protect your privacy, ensure your cars security system from getting hacked.
- WHAT YOU GET: 2*faraday bag + User manual + 18 months Worry-Free Warranty + 24-hours email contact service. Please let us know if you have any questions or concerns, were standing by to assist you all the time.
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Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.
If in UK, you will be directed to Amazon.co.uk
- LAB TESTED PROTECTION - FCC accredited lab tested shielding technology embedded in front flap blocks up to 99 percent of EMF cell phone radiation; The SafeSleeve EMF protection cell phone case for iPhone 6, iPhone 7 and iPhone 8 wallet case keeps you and your information safe.
- MILITARY GRADE SHIELDING - Integrated into the front flap, SafeSleeves EMF Radiation Protection cell phone case includes the latest cellular radio frequency blocking technology, each iPhone case features robust material as a protective blocker against RFID thieves and EMF Radiation.
- BUILT-IN WALLET - Put that EMF protection cell phone case to use with a RFID blocking full wallet; the card holder area carries up to 4 credit or business cards, plus room for cash and additional documentation to keep safe.
- BUILT-IN STAND - Use your EMF Protection SafeSleeves built-in kickstand to quickly prop up your phone for reading, video, and movie watching; if youve got a flat surface nearby, you can use your phone hands-free. Radiation protection for cell phones just got easier!
- VEGAN LEATHER - Rare among EMF protection cell phone cases, this vegan leather construction provides a rich, professional look while remaining free of animal products; the perfect iPhone 6, iPhone 7 and iPhone 8 case for men and women. Feel confident knowing youre using a stylish cruelty free EMF protecting cell phone case.
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Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.
If in UK, you will be directed to Amazon.co.uk
- ULTIMATE PROTECTION FROM WIRELESS RADIATION - Multiple layers of advanced shielding in the backside of the holster to block up to 100% of wireless (RF) radiation! Most products only block a small percentage radiation emitted from your cell phone. Our technology does not interfere with phone connectivity while inside the holster.
- SLEEK DESIGN - Easily slide your cell phone or other electronic device in and out of the holster with magnetic closure to keep phone secure. Features a slim rotating rear belt clip and durable exterior with flexible elastic sides to accommodate a variety of devices. Holster designed to fit cell phones and other electronic devices up to 6”.
- DURABLE & PROTECTIVE - Hardened casing with soft padded surface protects you phone from drops, scratches, fingerprints, dust, abrasions.
- WORLDWIDE EMF PROTECTION LEADER - Industry-best, FCC-certified lab-tested EMF shielding technology helps protect from EMF radiation to minimize health risks. Our next-generation EMF radiation-blocking technology is simply unmatched! Dont be fooled by lower quality knock-offs.
- WORLD CLASS SERVICE - We stand behind our products and offer a 100% Satisfaction Guarantee. If, for any reason, you are not completely satisfied with your holster, simply return it to Amazon within 30 days for a full money-back refund. We also offer a 1 year, 100% warranty replacement for any issues. Please contact us directly – DefenderShield is here to help!
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Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.
Pocket Pouches Protect People!
Radiation Screen Wall Covering
[azon_profit_poster HNG80-Radiation-Shield-Wallpaper]
Our comments:
You could use this product like wallpaper to screen radio-frequency electromagnetic radiation. Get an expert to hang it for you if you haven’t hung wallpaper before – it’s not as easy as it looks!
Claimed attenuation is a very high 80 dB at 1 GHz – other radio-frequencies are not specified but will probably be similar.
No customer reviews on Amazon at time of writing, but the Amazon description implies a high-quality item.
The product is sold on Amazon in various shorter lengths, too.
Suppliers suggest using a special dispersion glue called DKL90 to attach the product to the wall. This glue does not appear to be carried by Amazon.
You would probably only consider hanging this on the inside of a wall, because it would not be weatherproof. Also it might not look very good in your lounge – so perhaps you could hang a more decorative wallpaper on top of it.
What I know about decorating is dangerous, so you might want to consult a decorating expert, unless you are one!
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