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SESK: Stuff Everyone Should Know · sesk.info/ham-fog-rain-10m-6m

What effect does fog or rain have on 10-meter and 6-meter band signals?

Little effect.

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  1. Strong absorption
  2. Increased range
  3. Little effect ✔

Why: Rain and fog mostly trouble microwaves, which have very short wavelengths. The much longer waves of 10 and 6 meters pass through with little effect.

Huh, didn't know that: The 6-meter band is around 50 MHz and 10 meters is around 28 MHz, far below microwave frequencies.

The dad joke
Rain on 6 meters? It's like water off a long wave's back.
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References

Answer: Little effect. Rain and fog mostly trouble microwaves, which have very short wavelengths. The much longer waves of 10 and 6 meters pass through with little effect.

  1. 2026-2030 Technician Class Question Pool, T3A12 ncvec.org/downloads/2026-2030%20Technician%20Pool%20and%20Syllabus%20Public%20Release%20Feb%2019%202026.pdf
    Little effect
    Checked 2026-10-09.

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