4 ms·
In a quiet room I can hear some faint 'tick tick' noises if I place the back of a cellphone against my ear. I live near cell edge so my devices broadcast at max
by joecool1029 3y ago
In a quiet room I can hear some faint 'tick tick' noises if I place the back of a cellphone against my ear. I live near cell edge so my devices broadcast at max power. These sounds do not happen when wifi is turned on (lower power level) and are not the old GSM signal that gets picked up by analog circuits.
If it's not RF, it's likely some other component inside the phone resonating when it transmits. There's sometimes some higher frequency tones mixed in but in general this doesn't sound high pitched. I remember reading something about soviet experiments with humans exposed to strong microwave radiation and hearing it as 'clicks' in their head.... so maybe?
- baerrie 3y agoI have actually heard a similar thing when having my head on my pillow with my phone on my mattress. Is yours a spring mattress? Im curious if that could contribute
- joecool1029 3y agoNo, my mattress is foam. My guess for you is the pillow isolates noise around the phone so it's easier to hear and the added RF attenuation by bed/mattress material makes it send at higher txpower. See also: https://en.wikipedia.org/wiki/Microwave_auditory_effect https://en.wikipedia.org/wiki/Microwave_auditory_effect
- deleted 3y ago[deleted]