Independent third-party laboratory
Documents · Test report RP000123
How much of the electromagnetic field do the medallion and the fabric stop?
An independent testing laboratory measured the attenuation, in decibels, of the medallion and fabric assembly, to the IEEE 299:2013 and EN 50147-1:1996 standards. The highest result: 31 dB at 2.4 GHz, the Wi-Fi band. Between 700 MHz and 3.7 GHz the attenuation stays between 25 and 31 dB. The stated uncertainty: ±3 dB.
Independent third-party laboratory
- Issuer
- Tecnolab del Lago Maggiore S.r.l., Verbania, Italy
- Document type
- Test report
- Number
- RP000123, contract CO024822
- Date
- February 17, 2023
- Field
- Electromagnetic shielding
- Object analyzed
- Aluminum medallion and fabric with metal filaments, EUT code AC082522/1, 40 x 60 cm sample, vertical polarization
- Method
- Shielding effectiveness, in dB, to IEEE 299:2013 and EN 50147-1:1996
- Client
- Natural Vibrational Energy S.R.L.
- Level of evidence
- A, independent third-party laboratory
Measured results
Attenuation by band. 20 dB means 99% of the power blocked, 30 dB means 99.9%.
Frequency
Typical source
Attenuation
300 to 400 MHz
Radio, communications
22 dB
700 to 800 MHz
Digital TV, mobile telephony
25 dB
1000 MHz
Smart home devices
28 dB
1800 MHz
Mobile 4G, LTE
27 dB
2400 MHz
Home Wi-Fi, Bluetooth
31 dB
3700 MHz
5G, main band
28 dB
5000 MHz
Wi-Fi 5 GHz
24 dB
18 GHz
Microwaves, radar
6 dB