TESMEN EMF Meter

[@richardb8104]

This is an excellent video. Thanks dude.

[@probablyadog]

thank you Geo

[@cejaprime]

Saw this for $9 dollars at a bin store. Might pick it up tomorrow.

[@georgios.marinoudis]

I just bought it and test it. It's good for a reference but not sensitive enough like the high price range.

[@bazkeeley9618]

I discovered that too when my tv would continue to stream for nearly a full minute after turning off my personal hotspot. 👍

[@madrugatube]

Please test it on Airtag

[@user-directx]

Can u get digital changes within half a meter of an IP cam? I am thinking of buying one to search for hidden signal locations and steal secret signals from my phone screen.thanks

[@Dave_Tae]

Why didnt you test the phone during a call thats when it transmits otherwise it just pings the nearest mask periodically. .

[@dochw2606]

[@Joe-t6d]

Can it detect ghosts

[@alphaomega1969]

Yes

[@Geri_crs]

A microwave is just a 3-6ghz 700W RF Transmitter (without data intervalls, just RF power straight ) conceled in a faraday cage.

[@johnhertzlerjr.3223]

Nice review.

[@FaisalSharafudeen-m2h]

Nice video

[@Merializer]

It looks like it seriously underperforms, which is what I typically found in EMF meters I tested in this price range. Nothing changed, another one to put on the pile of problematic EMF meters for EHS people. It can have it's uses I guess, to find strong EMF mostly.

[@gjbcapital1847]

The rf measurements in mW/m^2 seems accurate to me and what is expected next to a WiFi router and a microwave oven.

[@Merializer]

@@gjbcapital1847 I was not talking about the RF mode, but you also cannot say a device is accurate until you compare it to a more professional device. But I abandoned caring about accuracy, it doesn't seem feasible in cheap devices anyway. I'm more concerned about sensitivity and frequency range of devices.

[@gjbcapital1847]

@@Merializer Depends on what's the application you need it for. A 170$ tiny SA ultra is better for most people needs than a 10 - 20k $ device because they don't care about accuracy better than 0.1 dBm. Here a device that you can order for 20$ from China shows power density of 50mW/m^2 next to a 100mW wifi transmitter so I consider this accurate and useful for most purposes. First because it works up to 2.4 so it works for most useful frequencies you care for (datasheet of similar clones claim they work up to 3.8GHz) and second because for 20$ you can only assemble a diode and an opamp by yourself that only shows rf presence blinking a led so here you get something that you can use to actually get a reading for practically the same cost.

[@Merializer]

@@gjbcapital1847 My comment was about the needs for EHS people. Most people won't be able to use spectrum analyzers, they need something simple but also very sensitive and with a wide frequency range. I tested enough devices that are descent enough. Of course the better they want the more it costs.

[@Merializer]

@@gjbcapital1847 Yeah I responded but my comment was deleted again by KZbin, the moment it contains some info they don't like. I can't properly communicate anymore on this platform run by evil people.