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What devices produce pulse EMF
July 20, 2018
5:44 pm
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July 4, 2018
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Can someone tell me what devices produce pulse EMF?

I live in a 2-bedroom flat (4th floor out of 9). Probably 8 months ago I bought a 3-axis EMF meter (50Mhz-3,5GHz). Several weeks ago I noticed in my bedroom that there is a signal that every 10 seconds produces a field that my meter measures as ~1000 mV/m or 1400 mqW/m2 (40cm from the window). The greatest signal strength (around 4000mV/m is when I move my meter outside through the window and direct it to the right. This is continuous day and night, the field hits the peak and then step by step drops down to zero (not immediately). What I also noticed is that the field was gone for about a week or two. I cannot detect this signal in front of the residential block. When I walk with the meter up and down the staircase, I cannot attribute this signal to any of the neighboring flats, though the reading is highest in front of the staircase windows, probably 2 floors above. I am really concerned about my health, especially that I do not really know how to protect my family, as the source is unknown. The second room at the opposite site of the flat is free from this field. Please share your opinions on this topic.

July 21, 2018
2:51 pm
Peter Williamson

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August 17, 2014
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Hi Paul, welcome to the forum. I hope someone can help with your question.
Devices I’m aware of which might produce the type of pulsing you observer include Smart Meters (which seem to pulse at varying rates depending on the type and the supplier), wifi-enabled computers when they are not actually connected to a network. It’s possible that some of the newer IoT (Internet of Things) appliances might do this when they are trying to connect or maintain a connection, but I haven’t seen anything very definite about how they actually behave in practice. This seems to be a strong signal if it’s coming from outside – could it be a neighbour’s smart meter?
There is advice about protection and shielding on the main site here. As the signal appears to be coming from outside the obvious options are wall screening with special paint, or EMF absorbing wallpaper, window shielding (with special window film, or a bed canopy to provide protection when you are sleeping. Temporary shielding with aluminium foil can be a good cheap way to test the effectiveness of shielding in principle.

August 31, 2018
9:56 pm
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July 4, 2018
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Hi again. I would like to share with you the results of my investigation. I spent quite a lot of time trying to figure out what the pulsing signal might be, but did not have a clue, so I hired a professional to come to my flat and measure this field. The spectrum analyzer showed that this is 1,2GHz signal from a military radar, which is located 25km from the place where I live. Unfortunately this type of signal is extremely harmful and difficult to shield. I have been here for 5 years, but only 6 months ago I moved to the small room, where the signal is 100 times stronger. And this is when I started experiencing sensitivity. I hope this may help others, who will happen to come across a similar issue.

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