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 3. GQ EMF EF Meter RF Spectrum Power Analyzer
 GQ EMF390 RF and EF readings
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GQ390user

United Kingdom
2 Posts

Posted - 05/04/2019 :  06:10:51  Show Profile  Reply with Quote
Hi,

I recently purchased a GQ-390 and have a few questions about the various readings I'm getting in different modes.

1. When using all in one mode, the RF reading is always 0.001 mW/m2 and rarely changes or goes above 0.002. It seems to be displaying mainly ---- (unknown source)but changes to static or mixed sources for some of the time.

However, when I change the mode to vertical the RF reading is about 100 times higher at around 0.113 to 0.450 mW/m2 mainly at @ 636 or 952 MHz, which seems more likely.

When I change the mode to table I am getting much smaller readings, e.g. 636 MHz @ 251pW or 952MHz @ 100pW.
When I change to RF spectrum mode, using the 240 to 1040MHz band (fully zoomed out) I am reading e.g. 636MHz at 251pW 960MHz @ 251pW.
I am waiting at least 20 seconds before comparing readings in different modes.
Why is there such a big difference in readings in various modes, such as all in one, vertical and other modes but similar readings in Table and RF spectrum mode?

2. When measuring electric fields, I seem to be getting very high static readings (regardless of outside weather) e.g. 400 to 800 V/m on conductive and non conductive surfaces and grounded installations e.g. memory foam mattress, pillow, wooden chair, radiators, metal framed chair, pipes etc. I would assume, EF readings should only be this high on the surfaces of electrical cables, switches, electrical appliances, power lines, etc. Are these readings correct?
Reply #1

EmfDev

855 Posts

Posted - 05/06/2019 :  08:25:58  Show Profile  Reply with Quote
Hi GQ390user, may I ask what firmware are you using?

For the EF, some static readings are high, that's why sometimes you can see a spark from those in the dark. Does the EF go ever go low when not measuring? or measuring thins with no static? Thanks!
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Reply #2

GQ390user

United Kingdom
2 Posts

Posted - 05/06/2019 :  12:03:45  Show Profile  Reply with Quote
How do I check the firmware? I can only see Revision: 2.31

The EF reading only goes low when I'm standing in the middle of the room or at least 20cms away from any surface, usually reading about 20 or 30 V/m. All surfaces seem to be reading static.
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Reply #3

EmfDev

855 Posts

Posted - 05/06/2019 :  12:13:08  Show Profile  Reply with Quote
Can you please email support for new firmware update? Thanks!

Looks like there's lots of static charges in your room.
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