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 3. GQ EMF EF Meter RF Spectrum Power Analyzer
 I noticed an issue that affects the measurement

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Specjalista1 Posted - 06/26/2025 : 15:19:55
I’m a new owner of your EMF-390 meter.

I’ve noticed an issue: the screen backlight appears to affect the RF measurement results.

I placed the meter on the ground, set the units to µW/m², and covered it with a metal pot. When the screen backlight is on, the RF reading jumps from around 1 to approximately 25 µW/m².
After 30 seconds (which is how I’ve configured the display timeout), the backlight turns off, and the reading becomes more stable, remaining around 1 µW/m².

It seems that the screen backlight is interfering with the RF measurement.
I haven’t yet tested the other functions of the meter, so I don’t know if they are affected as well. Please check it in yours device.

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