SESKStuff Everyone Should Know
SESK: Stuff Everyone Should Know · sesk.info/ham-fm-bandwidth

What is the approximate bandwidth of an FM voice signal on VHF repeaters?

Between 10 and 15 kHz.

  1. Between 10 and 15 kHz ✔
  2. About 150 kHz
  3. Less than 500 Hz

Why: FM voice signals on VHF repeaters are about 10 to 15 kHz wide. That is several times wider than an SSB signal.

Huh, didn't know that: AM fast-scan amateur TV is far wider still, about 6 MHz.

The dad joke
Why did the FM signal need a bigger room? It had a 15 kHz wingspan.
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Sources

  1. NCVEC 2026-2030 Technician Question Pool (Feb 19, 2026 release) https://www.ncvec.org/downloads/2026-2030%20Technician%20Pool%20and%20Syllabus%20Public%20Release%20Feb%2019%202026.pdf

Test yourself in the game

Ham RadioWhich type of modulation is commonly used for VHF and UHF voice repeaters?Ham RadioWhich of these signal types has the narrowest bandwidth?Ham RadioWhat is the approximate bandwidth of a typical single sideband voice signal?

That's stuff everyone should know.