QSB — What It Means in Ham Radio

QSB — Fading.

The other station's signal is rising and falling. Normal on HF — it is the ionosphere moving, not your radio failing.

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Related words

• QRU — Do you have anything for me?
• QRP — Low power operating.
• QTH — Location.
• QSP — Relay a message.
• QSX — Listening on a different frequency.
• QST — A general call to all amateurs.
• QRG — Your exact frequency.
• QRT — Shutting down. Going off the air.