July 27, 2018
– The Earpods ON (in my iPAD Pro 10.5, playing a video)
– The Earpods unplugged
– The Sennheiser 598 SR connected to my PC, also playing a video
– These headphones:
(See last post)
Note: the reading in my bedroom is 0.07 mG. Or 0.1 mG. I think this is quite low, since most sources indicate 0.5 or less is better, in the areas we spend most time.
With the UHS2 gaussmeter. While the meter was in my bed. When I moved them to the upper part of the meter (where the internal components that measure everything must be located) the readings increased… nothing new here.
However in all headphones, whether they are turned on or off, the readings increased to more or less 0.5 mG. I lifted both earpieces of each model and the UHS2 in the middle.
I was expecting, for example, the Sennheiser had much higher readings.
These fluctuate a lot, but when I put the meter in the middle of the earpieces what I can tell is the increase is 10 times or a little less of what I get in my bedroom, so that would mean a 0.5 mG increase.
How can we measure accurately a headphone? This result indicates the magnetic field is always there, it’s intrinsic to the product, just like a telephone, as showed in this video:
The only difference is that it’s lower.
In my opinion even a 0.5 increase would mean it’s better to not use a headphone at all, and listen to the external speakers from my tablet. It would be better to use a headphone if there’s a difficulty discerning what we hear, otherwise if it’s a random video where the use of a headphone isn’t really required we may disregard it, since putting some distance between us and these devices is always good to receive less radiation (RF or magnetic/electric fields).
I was going to record a new video showing the readings in magnetic fields (miliGauss) from headphones, however considering what I just wrote I don’t think the results are reliable. Are there any sites that have tested different models for magnetic field?
P.S. My iPAD and PC are both using ethernet. There’s no RF radiation in my room, except from a wi-fi router located a few meters from here.