When choosing a Faraday bag, one crucial question will sooner or later arise: How reliably does this bag actually block the signal? The answer to this question lies in a single technical metric – attenuation (measured in decibels, dB).
On today's market, you will find hundreds of bags promising to protect your privacy. However, very few manufacturers back their claims with independent laboratory measurements. At FWR, we decided to take the path of absolute transparency and uncompromising performance. The result? Our Faraday bags represent a proven world-class standard that outperforms common competition not just by percentages, but literally by thousands of times.
What Exactly is Signal Attenuation?
Simply put, attenuation is the physical ability of a material to block, reflect, or absorb a passing electromagnetic signal – whether it's Wi-Fi, Bluetooth, GPS, or mobile networks (including 5G). You can imagine it like sound insulation in a recording studio: the higher the quality of the acoustic foam, the less noise gets in or out. With Faraday bags, however, we are not blocking sound, but invisible radio waves.
Attenuation is measured in decibels (dB) and works on a so-called logarithmic scale. This means that an increase of just 10 dB doesn't mean a 10% improvement, but a tenfold increase in isolation power. Once you understand this principle, it becomes clear why exact numbers matter so much when it comes to Faraday bags.
The Mathematics of Security: What Does 90 dB Mean?
Most commonly available commercial Faraday bags on the market achieve an attenuation of around 60 dB. At first glance, this might seem like a sufficient number. However, our flagship models achieve values over 90 dB (peaking at up to 102 dB).
What does this mean in practice? An attenuation level of 90 dB means that only one billionth of the initial signal power penetrates the bag. Compared to standard 60 dB bags, this means a thousand times better performance and efficiency. Where standard bags fail and leak data under the pressure of a strong signal, FWR Faraday bags keep your devices 100% isolated.
Testing and Uncompromising Standards
We didn't settle for internal testing. Our FWR Faraday bags are regularly subjected to rigorous measurements at the Bundeswehr University in Neubiberg, Germany.
The testing is conducted exactly according to the strictest international and military standards:
- ASTM D-4935-2010
- IEEE-Standard 299-2006
- MIL-Standard 285
Thanks to this, you can be absolutely certain that the numbers we present are scientifically backed and independently verified.
Attenuation Specifications Across Generations
We are constantly innovating. Our development can be clearly observed in the increasing attenuation values across our models, where the original Generation 2 represents what average competitors commonly offer today, while our latest models push the boundaries of physics.
Generation 4 and Generation M (6+6 Protective Layers)
Our current technological pinnacle, ensuring absolute impermeability.
- 900 MHz: 92 dB
- 1.8 GHz: 102 dB (Absolute peak)
- 2.1 GHz: 101 dB
- 2.45 GHz: 100 dB
- 2.6 GHz: 100 dB
- 3.2 - 3.8 GHz: 96 dB
Special Modification Generation 2.3
A high-performance variant designed for maximum attenuation across the spectrum.
- 800 MHz: 102 dB
- 900 MHz: 99 dB
- 1.8 GHz - 2.1 GHz: 96 dB
- 2.45 GHz - 2.6 GHz: 95 dB
- 2.8 - 3.2 GHz: 90 dB
Detailed specifications of all generations can be found here.
Conclusion: Protection Without Compromise
It has been clearly and independently proven that FWR Faraday bags represent the pinnacle of mobile device protection. If you are looking for a way to protect your data, privacy, and property from eavesdropping, surveillance, or modern vehicle theft, the standard is simply not enough. With our products, you get isolation that is a thousand times stronger than the average. Find the perfect Faraday bag tailored exactly to your needs here.
