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SESK: Stuff Everyone Should Know · sesk.info/ham-modulation-definition

What is combining speech with an RF carrier signal called?

Modulation combines speech with an RF carrier.

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  1. Modulation ✔
  2. Oscillation
  3. Impedance matching

Why: Modulation puts your voice or data onto a radio wave. FM changes the carrier's frequency, and AM changes its strength.

Huh, didn't know that: The word modem is short for modulator-demodulator.

The dad joke
My radio is very moderate. It does everything in modulation.
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References

Answer: Modulation. Modulation puts your voice or data onto a radio wave. FM changes the carrier's frequency, and AM changes its strength.

  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. Modulation
    Checked 2026-10-09.

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