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Re:Exposure to 835MHz RF-EMF induces hyperactivity and demye... by eesmith on Sunday April 24, 2022 @04:22AM (#31142195)
When the power goes out there's also a drop in background noise. Your fridge motor stops. Your fans turn off. You can hear the 60Hz (or 50Hz depending on where you live) line frequency hum from, for example, some light sources. In the olden days of CRTs, the flyback transformer could give a high-frequency sound.

Normally your brain filters out that background noise. When it disappears, you can notice the change.

As for your test with your friend, it's hard to know if you had good test conditions. It could be that the subtle sounds of motion to initiate the test gives a confounding signal.

You should also measure the actual RF power generated by the phone during these tests. An FM transmitter can be at full power even when broadcasting silence. I don't know what phones are like ... do you?

Re:Exposure to 835MHz RF-EMF induces hyperactivity and demye... by Findecanor on Sunday April 24, 2022 @05:39AM (#31142524)
Also, don't forget infrasound - sound at frequencies too low to be audible. They are known to cause low levels of anxiety in sensitive individuals even though they can't be heard.

> An FM transmitter can be at full power even when broadcasting silence. I don't know what phones are like ... do you?

I dunno about 3G, 4G and 5G, but I know that a GSM phone (2G) after a data transfer continued to transmit, and at consecutively smaller levels before stopping. The time interval for each level was set by the telco, not the phone.