For some time now I have been looking for the best EMF meter to measure radio-frequency (RF) or cell phone radiation.
There are a lot of very average meters out there and a few good ones. Much depends on how much you want to spend and what exactly you want to measure.
What Does The Cornet ED85EX EMF Meter Measure?
The Cornet ED85EX EMF meter is designed to measure radio-frequency (RF) radiation over a broad frequency range.
Here is the technical specification:
- Frequency range : 1MHz to 8GHz (useful to 10GHz according to manufacturer)*
- Wide dynamic range : 60dB
- Sensitivity : –55dBm to 0 dBm (25mV/m to 14.8V/m)
- Peak power density measurement : 1.5uW/m2 to 0.58W/m2
- LCD graphic Histogram and Bar display shows signal power level
- Color LED 8 segment level display for easy signal level indication.
- Continue wave (AM,FM) and High speed Burst RF(GSM,TDMA,,CDMA, Wi-Fi,WiMAX)
- External SMA connector : (50ohms) for external Antenna, attenuator, and filter
- Compact hand held design, 69mmX110mm.
- Takes 9V batteries
* below 700MHz and above 6GHz an external antenna is required (not supplied).
From What Sources Can The Cornet ED85EX Measure Radiation?
Typically this meter measures radiation from the following sources:
- Cell phones
- Smart meters
- Cell phone towers (base stations)
- WiFi routers and WIFI networks
- Cordless (DECT) phones
- Microwave ovens
- Spy cameras
- Digital baby monitors
- Digital TV
- A/V Sender Receivers
- Wireless burglar alarms
- Wireless video games (Playsation 3 and the like)
- FM radio transmissions
What I Liked About This EMF Meter
There are really two things that set this meter apart from other RF meters:
- its low price, it generally retails at under $200
- its exceptional range
Most RF meters only go to 3 GHz. But more and more wireless appliances are working above the 3GHz range, and so these meters are quickly becoming obsolete. But the Cornet ED85EX EMF meter measures RF radiation all the way from 1 MHz right up to 8 GHz. In terms of the range of measurement this meter is difficult to beat.
How To Use The Cornet ED85EX EMF Meter
Here is how you can use the Cornet ED85EX EMF meter to measure radiation in 5 easy steps:
I found it very easy to use. It comes supplied with a 9 V battery you just insert in the back, screw the antenna on and press the power button and you are away. It has both an LCD display where you can see the RF levels moving up and down as numbers and an LED display using colored lights, going from green to red, depending on the radiation levels (with red being the higher radiation levels).
This meter can measure from 1.5 uW/m2 to 0.58 W/m2, just press on the top black button to select the mW/m² display.
How Do I Know When The RF Radiation Is At Dangerous Levels
There is much debate about what constitutes a dangerous level of RF radiation. It depends on which scientists you listen to. It also depends on whether your exposure is momentary, for instance when you go into a room with a lot of cell phones and wireless devices, or whether it is more long-term, as might be the case when you have a cell phone tower in close proximity to your home.
As far as long-term exposure goes, my own personal recommendation with this meter is that if the first yellow LED lights up then you should be concerned and looking for solutions to minimize your exposure.
Who will be interested in using this Cornet meter?
The ideal candidate might be somebody who is living close to a cell phone tower. Or it might be somebody living in an apartment surrounded by other apartments equipped with WiFi, cordless phones and smart meters. It might be someone interested in the health benefits of EMF mitigation, or it might be someone who is showing the first signs of electrical sensitivity. Once you have determined your RF levels then you can take action by possibly using shielding paints and EMF netting as appropriate.
What are the disadvantages of the Cornet ED85EX meter?
- it can only measure RF radiation
- the screen presents a lot of information which can take time to understand
- it doesn’t have an audio function, so you can’t “hear” the radiation (UPDATE August 2012: this meter now has an audio function)
- it’s a single axis meter
It being a single axis meter is not necessarily a disadvantage for measuring RF radiation. It can allow you to determine where the radiation is coming from if you stand in one spot and turn the meter in different directions.
If you are looking for more of a multi-purpose EMF meter the Cornet ED75 might be better for you. In addition to measuring RF radiation it also measures magnetic field radiation (in milligauss). It measures a shorter frequency range than the ED85EX (the Cornet ED75 starts at 100MHz, so it can’t measure FM transmissions) but it is less expensive. Click here for my review of the Cornet ED75 meter.
Where can I buy the Cornet ED85EX meter?
The best place to buy the Cornet ED85EX is this company. I have bought through them and found their customer service to be exceptional (they offer a 90 day no questions asked money back guarantee – and they really do refund if you are not satisfied) and free worldwide shipping. At under $200 this meter represents unbeatable value. Update March 2013: the Cornet ED85EX EMF