Aether

Android field instrument

Spectrum health

Typical RTL-SDR / HDSDR USB dongle (R820T2) tunes about 24 MHz–1.766 GHz. HackRF One reaches ~6 GHz. 5G mmWave, 95 GHz active denial, and lasers are invisible to this hardware.

Source

Field model

Window

400.000 MHz–960.000 MHz

Threat

elevated

Flags

2

DemoIndustrial leakelevated · 914.938 MHz

Connect a stick

Windows: quit HDSDR, bind WinUSB with Zadig on Bulk-In Interface 0, then USB SDR. Or record in HDSDR and import the WAV. Android: Chrome + USB-OTG, then USB SDR.

400.000 MHzCaptured allocations in this window960.000 MHz

Field model

Watch flags

All flags

914.938 MHz

Industrial 915 heater

elevated
Received
-21.4 dBm
Width
2.625 MHz
Mode
cw
Band
UHF TV / 600–900 cellular
Est. power density
843.62 µW/m²
Public ICNIRP
4.57 W/m²
Fraction of limit
0.018%
Saturated
No

Why flagged

  • Well above typical ambient for this allocation.

Human health at harmful levels

At harmful levels: deep tissue heating (centimetres), core-temp rise, cataract risk only at extreme chronic occupational microwave. A leaking industrial heater is the realistic local threat. Public whole-body reference at this frequency is 4.57 W/m² (f/200, ICNIRP 2020).

Directed-energy relevance

915 MHz ISM and 800–900 MHz are inside published high-power-microwave research ranges. Saturated, persistent, or pulsed energy here is a primary watch condition for this app.

Power density is an uncalibrated 0 dBi estimate from received power. A USB stick is not an ICNIRP field probe. Saturation means “too strong to measure,” not “weapon confirmed.”

Captured ranges & health

Occupied allocations in this window, with the specific human-health notes for each.

UHF TV / 600–900 cellular

470.000 MHz – 960.000 MHz · peak -21.4 dBm

USB in range

At harmful levels: deep tissue heating (centimetres), core-temp rise, cataract risk only at extreme chronic occupational microwave. A leaking industrial heater is the realistic local threat.

  • Industrial 915 MHz heaters and RF dryers can leak hazardous fields if shielding fails.
  • Cellular downlink at street level is typically thousands-to-millions of times below ICNIRP.

Evidence: established

Low UHF / public safety

300.000 MHz – 470.000 MHz · peak -29.7 dBm

USB in range

Close to an ISM heater or paging transmitter: skin/tissue heating, possible implant EMI. Typical key-fob bursts are trivial.

  • TETRA/public-safety handsets: IARC 2B applies to RF EMF generally; no unique TETRA disease signal in large studies.
  • High-power UHF TV and paging transmitters: occupational fence-line heating.

Evidence: occupational

Full encyclopedia, including bands this dongle cannot hear, is on Bands.

Ranges in this sweep

AllocationSpanPeakOccupyDongle
UHF TV / 600–900 cellular470.000 MHz – 960.000 MHz-21.4 dBm0%In range
Low UHF / public safety300.000 MHz – 470.000 MHz-29.7 dBm1%In range