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Atmospheric Attenuation

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Combine specific attenuation terms from gas, rain, cloud/fog, and implementation losses over a slant RF path.

km
deg
dB/km
dB/km
dB/km
dB/km
dB

Total attenuation

2.60 dB

54.95% power transmitted

Effective path

10.00 km

slant factor 2.00

Gaseous loss

0.30 dB

O2 0.10 + H2O 0.20

Weather loss

1.80 dB

rain 1.50 + cloud 0.30

Miscellaneous

0.50 dB

fixed extra loss

Slant path loss budget

Low elevation stretches the absorbing RF path through gas and weather; the chart separates the dB contribution from each loss source.

gas absorptionrain, cloud, water vaporground terminalspacecraft30.0 deg elevation

Hover the slant path to inspect path geometry and total atmospheric loss.

Geometric path

5.00 km

Effective path

10.00 km

Power after atmosphere

54.95%

Component attenuation

dB contribution by source

Gas subtotal

0.30 dB

Weather subtotal

1.80 dB

Open Source and Easy to Use Elsewhere

This tool is open source and the underlying logic is fully transparent. You can inspect the code, understand the calculations, and contribute improvements. If you want to use the tool in your own website, course page, or learning platform, you can also embed it directly and start from a ready-made iframe setup for this exact tool.

Open source: review the implementation and see how the results are produced.

Embeddable: preview this tool, copy the iframe, and use it in your own site or LMS.