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Technician exam question T3B10

Subelement T3, RADIO WAVE PROPAGATION· Group T3B

T3B10

What frequency range is referred to as HF?

  • A.300 to 3000 MHz
  • B.30 to 300 MHz
  • C.3 to 30 MHz (correct answer)
  • D.300 to 3000 kHz

WhyHF refers to the frequency range from 3 to 30 MHz. HF, High Frequency, spans 3 to 30 MHz, the range that includes the classic HF amateur bands like 80, 40, 20, 15, and 10 meters where ionospheric skip enables long-distance contacts, answer C. The other ranges correspond to UHF (A), VHF (B), and MF (D), none of which are the HF range.

Published 2026-08-28 · Last updated 2026-08-28 · Question text is verbatim from the 2026-2030 NCVEC Element 2 pool (public domain); the explanation above is original writing, see our methodology.

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