He suspected EMF interference so as a quick first step he decided to throw together an EMF detector using an Arduino. It uses a bank of LEDs as an indicator bar to reflect the EMF picked up by the ...

To measure the RF-EMF levels emitted by devices and base stations ... The average for rural villages was 0.17 milliwatts per square meter (mW/m²), while the average for cities was 0.33 mW ...