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SESK: Stuff Everyone Should Know · sesk.info/ham-band-wavelength-names

Besides frequency, what is used to identify amateur radio bands?

Their approximate wavelength in meters.

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  1. Their approximate wavelength in meters ✔
  2. Channel numbers
  3. Traditional letter and number designators

Why: Hams often name a band by its approximate wavelength, like 2 meters or 70 centimeters, instead of always quoting the frequency.

Huh, didn't know that: The US 70-centimeter band runs from 420 to 450 MHz.

The dad joke
I asked a ham how big his band was. He said two meters, and showed me a handheld.
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References

Answer: Their approximate wavelength in meters. Hams often name a band by its approximate wavelength, like 2 meters or 70 centimeters, instead of always quoting the frequency.

  1. HamStudy 2026 Technician pool, T3B07 hamstudy.org/browse/E2_2026/T3B
    The approximate wavelength in meters
    Checked 2026-10-09.

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