Specific Atmospheric Attenuation

Calculate the exact attenuation factor (γ) of RF signals caused by oxygen and water vapor absorption based on environmental conditions.

Environmental Data

Set the atmospheric conditions

Signal Frequency (f)

GHz

Temperature (T)

°C

Pressure (P)

hPa

Moisture Input Mode

Relative Humidity

Calculated Density: 6.41 g/m³

Attenuation Results

Loss per kilometer (γ)

Total Specific Attenuation

0.0739dB/km

Water Vapor (γ_w)

0.0581

Dry Air / Oxygen (γ_o)

0.0158

Resonance Behavior: Water vapor peaks at ~22 GHz and ~183 GHz. Oxygen drastically absorbs energy at ~60 GHz and ~118 GHz. Try entering 60 GHz to see the massive spike in Dry Air loss!