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SESK: Stuff Everyone Should Know · sesk.info/ham-28400-khz-to-mhz

Which is equal to 28400 kHz?

28.400 MHz.

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  1. 28.400 MHz ✔
  2. 28.400 kHz
  3. 284.00 MHz

Why: There are 1,000 kilohertz in one megahertz. Dividing 28,400 kHz by 1,000 gives 28.400 MHz.

Huh, didn't know that: Trailing zeros can show measurement precision without changing the value.

The dad joke
Why do hams love the decimal point? It turns 28400 kHz into 28.400 MHz with no extra work.
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References

Answer: 28.400 MHz. There are 1,000 kilohertz in one megahertz. Dividing 28,400 kHz by 1,000 gives 28.400 MHz.

  1. HamStudy 2026 Technician pool, T5B12 hamstudy.org/browse/E2_2026/T5B
    28.400 MHz
    Checked 2026-10-09.

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