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SESK: Stuff Everyone Should Know · sesk.info/hame-rf-exposure-limits-vhf

Over what range of frequencies are the FCC human body RF exposure limits most restrictive?

30 to 300 MHz.

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  1. 3 to 30 MHz
  2. 30 to 300 MHz ✔
  3. 300 to 3000 MHz

Why: The body absorbs RF energy most readily in this range, so the exposure limits are strictest there. The band includes 6 meters and 2 meters.

Huh, didn't know that: When evaluating RF exposure at a neighbor's home, you must stay under the uncontrolled MPE limits (E0A02).

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References

Answer: 30 to 300 MHz. The body absorbs RF energy most readily in this range, so the exposure limits are strictest there. The band includes 6 meters and 2 meters.

  1. NCVEC 2024-2028 Amateur Extra Question Pool, 4th Errata (Feb 4, 2026) ncvec.org/downloads/2024-2028%20Extra%20Class%20Question%20Pool%20and%20Syllabus%20Public%20Release%20with%204th%20Errata%20Feb%204%202026.pdf
    C. 30 - 300 MHz
    Checked 2026-10-11.

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