Every Frequency Passing Through You Right Now
You are currently transparent to radio frequency energy from at least 30 simultaneous sources. Most of them didn’t exist when the last safety standards were written. Here is a complete map of the electromagnetic environment your body inhabits — whether you consented to it or not.
The Invisible Infrastructure
You are sitting inside a radio frequency environment that would be unrecognizable to anyone who last thought about wireless exposure even ten years ago. The electromagnetic energy passing through your body at this moment comes from dozens of simultaneous sources operating across frequency bands spanning five orders of magnitude — from the 50/60 Hz of your building’s wiring to the 47 GHz ceiling of millimeter-wave 5G.
None of these signals ask permission. None of them stop at your skin. Radio frequency energy at these power levels passes through walls, clothing, bone, and soft tissue. You cannot feel it. You cannot see it. You cannot opt out of it. You can, at best, become aware of it — which is why we’re writing this.
What follows is not speculation. Every frequency band listed below is documented in public FCC allocation tables, ITU Radio Regulations, and manufacturer specification sheets. The sources are operating right now, around you, as you read this. The only thing unusual about this document is that someone bothered to compile it in one place.
The Frequency Map
Every major RF band currently passing through a typical indoor environment in the United States, ordered from lowest to highest frequency. If you are in a building with electricity, a phone, and internet service, most of these are active around you right now.
That’s the map. Partial, because it omits classified military allocations, amateur radio, industrial scientific and medical bands, radar, and dozens of niche allocations. What’s listed above is specifically the infrastructure that targets you — the consumer, the citizen, the body sitting in a building.
What Changed — and When
The FCC’s current RF exposure limits were established in 1996. They were based on research from the 1980s and earlier. The safety standard is thermal: a frequency is considered safe if it doesn’t heat human tissue by more than a specified amount over a specified time. That’s the test. That’s the only test.
Here is what didn’t exist when those limits were set: WiFi. Bluetooth. Smartphones. 3G, 4G, or 5G cellular. Smart home devices. IoT sensors. Ultra-wideband positioning. Low-earth-orbit satellite constellations. WiFi 6E. Millimeter-wave consumer broadband. Vehicle-to-everything communication. AirTags. Mesh networking. The concept of “always connected.”
The safety standard assumes a single-source exposure model. You are exposed to dozens of simultaneous sources. The standard measures thermal effects. The question of non-thermal biological effects — cellular stress responses, blood-brain barrier permeability, calcium ion channel disruption, melatonin suppression — remains debated precisely because the standard doesn’t measure them. They are outside the scope of the test. Which is not the same as being outside the scope of reality.
In 2021, a federal court ruled that the FCC had failed to adequately explain why its 1996 guidelines remain sufficient given the changed electromagnetic environment. The court ordered the FCC to provide a reasoned explanation. As of this writing, the FCC has not completed that review.
The MIT Study’s Blind Spot
The MIT tinfoil hat study we analyzed in Dispatch #001 tested frequencies from 10 kHz to 3 GHz. Look at the frequency map above. Everything from WiFi 6E (6 GHz) onward — UWB, satellite downlinks, 5G mmWave — is above the study’s ceiling. The entire upper half of the modern RF environment has never been tested for interaction with conductive headwear.
The study found amplification at 1.2 GHz and 2.6 GHz — both of which are now densely populated with active infrastructure that didn’t exist (or barely existed) in 2005. The 2.6 GHz band, where MIT found foil helmets amplified signals, is now T-Mobile’s primary 5G layer carrying traffic for millions of subscribers.
This is the context that makes the “nobody has replicated the study” observation more than academic curiosity. The electromagnetic environment has changed by orders of magnitude, the safety standards haven’t been updated, one paradoxical study produced results that become more concerning as the infrastructure grows around those exact frequencies — and no one has bothered to look again.
A note on what this dispatch is not. This is not a health claim. We are not stating that RF exposure causes harm. The scientific evidence on non-thermal biological effects is contested and incomplete — which is exactly the problem. What we are stating is factual: the electromagnetic environment has changed dramatically, the safety standards haven’t kept pace, and the research that would answer the question hasn’t been done at the scale required. Those are observations, not conclusions. Drawing conclusions from an absence of evidence is exactly the kind of thinking we’re designed to inoculate against.
Your Phone Is the Largest Source
Of all the frequencies listed above, the device transmitting closest to your body — and at the highest power density relative to your tissue — is the one in your pocket or your hand. Your phone simultaneously maintains connections on multiple cellular bands, WiFi, Bluetooth, and potentially UWB. It transmits continuously. It adjusts power dynamically based on signal conditions, which means it transmits harder when reception is poor — like when you’re in a building, on an elevator, or in a basement.
The specific absorption rate (SAR) testing for your phone was conducted with the device held at a specific distance from a standardized head model. You do not hold your phone at that distance. Nobody does. The test is a regulatory compliance exercise, not a measurement of your actual exposure.
Your phone also does not have a true off state. When powered on, it maintains tower registration, receives push notifications, updates location services, and responds to network pings. Even in airplane mode, many phones continue Bluetooth and WiFi scanning unless those are separately disabled. The only way to make your phone stop transmitting is to remove the battery — which is no longer possible on most devices, by design.
What You Can Actually Do
We sell hats, not paranoia. The electromagnetic environment exists. You live in it. Short of moving to a radio-quiet zone (they exist — the National Radio Quiet Zone in Green Bank, West Virginia, is the most famous), you cannot escape ambient RF exposure. You are not going to dismantle the cellular network or deorbit Starlink.
What you can do is make informed decisions about the exposure you control directly. Your phone’s proximity to your body is the single largest modifiable RF exposure variable in your life. Faraday pouches — properly engineered ones that attenuate without amplifying — reduce that exposure to near zero when the device is stored.
Awareness is the first step. Knowing what’s passing through you, and where it comes from, is the foundation on which any rational response is built. This dispatch is that foundation.
Signal Management
Awareness is the first layer. Engineering is the second. Every TINFOIL product is designed with the frequency map in mind — not to eliminate exposure, but to give you agency over the signals closest to your body.