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SESK: Stuff Everyone Should Know · sesk.info/ham-ssb-narrower-than-fm

What is one characteristic of single sideband (SSB) compared to FM?

SSB signals have narrower bandwidth.

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  1. SSB has narrower bandwidth ✔
  2. SSB is easier to tune in correctly
  3. SSB always uses wider bandwidth

Why: SSB sends just one sideband and no carrier, so it takes up much less spectrum than FM. That leaves room for more signals on the band.

Huh, didn't know that: If you tune an SSB voice slightly off frequency, it sounds high or low pitched like a cartoon character.

The dad joke
SSB is the skinny jeans of radio modes. It fits in tight spaces.
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References

Answer: SSB has narrower bandwidth. SSB sends just one sideband and no carrier, so it takes up much less spectrum than FM. That leaves room for more signals on the band.

  1. NCVEC 2026-2030 Technician Question Pool (February 19, 2026 errata) ncvec.org/downloads/2026-2030%20Technician%20Pool%20and%20Syllabus%20Public%20Release%20Feb%2019%202026.pdf
    C. SSB signals have narrower bandwidth
    Checked 2026-10-09.

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Ham RadioWhich voice mode is often used for long-distance, weak signal contacts on VHF and UHF?Ham RadioWhich sideband is normally used for 10-meter HF, VHF, and UHF single-sideband communications?Ham RadioWhat is the approximate bandwidth of a typical single sideband voice signal?

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