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SESK: Stuff Everyone Should Know · sesk.info/ham-swr-perfect-match

What SWR reading indicates a perfect impedance match between antenna and feed line?

1:1.

  1. 50:50
  2. 1:1 ✔
  3. Zero

Why: SWR compares the forward and reflected waves on a feed line. A reading of 1:1 means no power is being reflected, so the match is perfect.

Huh, didn't know that: A high reading such as 4:1 means there is an impedance mismatch.

The dad joke
Why did the antenna and the feed line get married? They were a perfect 1 to 1 match.
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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

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