Best RF field strength meter

[jashugan]

Hello,
I need to test the electrical field inside a GTEM for radiated immunity testing (10 V/m). The frequency range is from 30 MHz to 6 GHz. I found this: EMF RF HF-B8G, which is around three hundreds bucks. What do you think about? Is it suitable for my needs, or do you think it is just a piece of crap?

[pdenisowski]

I could be wrong, but it's hard for me to take any RF detecting device seriously when its description includes things like:

- "Spy camera, wireless bug finder"
- "Cellular /Cordless phone radiation safety level"
- "Personal living environment EMF safety"

I guess the question I would ask is what your budget is.  Our (R&S) field strength measurement solutions are excellent, but I'm pretty sure they are well outside of your price range

https://www.rohde-schwarz.com/us/products/test-and-measurement/radiated-testing/rs-ts-emf-portable-emf-measurement-system_63493-8174.html

If you're trying to do this on a limited budget, the best bet would probably be to get a good isotropic antenna and connect it to an RF power sensor.  You would need to correct for the frequency response of the antenna, but a reputable manufacturer should supply this information.

[radiolistener]

the best bet would probably be to get a good isotropic antenna and connect it to an RF power sensor

Where I can buy isotropic antenna? 

[jashugan]

Yes, you're right, and you're correct for the doubts that arise reading that description. I'd like to stay within 500 €, but I don't know if this is a correct budget.
Do you think that object like Tenmars TM-196 or the above EMF RF HF-B8G are useless for my application? I don't need to be extremely precise, even an error of 0.3 V/m is acceptable for me.

[pdenisowski]

Where I can buy isotropic antenna? 

As I mentioned above, we (R&S) sell calibrated isotropic antennas (TS-EMF series)

https://scdn.rohde-schwarz.com/ur/pws/dl_downloads/pdm/cl_brochures_and_datasheets/specifications/3608_9918_22/TS-EMF_dat-sw_en_3608-9918-22_v0300.pdf

but I'm sure they are well outside of the OP's price range

[Solder_Junkie]

I had the loan of one of those 3 axis EMF meters, it was another "brand" but looks identical to the B88G. The meter was complete cr*p, the readings were all over the place, indoors it showed I should be cooking in the level of RF it showed and outdoors it was very variable and nowhere close to the real readings from a spectrum analyser and dipole antenna. And I had turned off my phone too... A spectrum analyser is easy to use to calculate the field strength, which is why R&S, Keysight, etc. offer the option on some spectrum analysers.