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SESK: Stuff Everyone Should Know · sesk.info/ham-antenna-analyzer-resonance

What is used to check if an antenna is resonant at the desired operating frequency?

An antenna analyzer shows where an antenna is resonant.

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  1. A frequency counter
  2. An antenna analyzer ✔
  3. A Q meter

Why: An antenna analyzer sends a small signal across a range of frequencies and shows the antenna's SWR and impedance. You can see where it is resonant.

Huh, didn't know that: Antenna analyzers let you check an antenna without running your transmitter.

The dad joke
I took my antenna to the analyzer. It said we need to talk about your resonance issues.
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References

Answer: An antenna analyzer. An antenna analyzer sends a small signal across a range of frequencies and shows the antenna's SWR and impedance. You can see where it is resonant.

  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
    B. An antenna analyzer
    Checked 2026-10-09.

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