SESKStuff Everyone Should Know
SESK: Stuff Everyone Should Know · sesk.info/ham-qsy-change-frequency

Which Q signal means you are changing frequency?

QSY.

  1. QSL
  2. QSY ✔
  3. QRZ

Why: QSY means changing frequency. QSL means I acknowledge receipt, and QRZ asks who is calling me.

Huh, didn't know that: QRM is the Q signal for interference from other stations.

The dad joke
Why did the ham QSY? The frequency was getting too crowded for his jokes.
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Sources

  1. NCVEC 2026-2030 Technician Question Pool (Element 2), errata Feb 19, 2026 https://www.ncvec.org/downloads/2026-2030%20Technician%20Pool%20and%20Syllabus%20Public%20Release%20Feb%2019%202026.pdf

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