What is QSL and what information is typically exchanged in a QSO confirmation?

• A. QSL is a broker for radio equipment.
• B. QSL is a type of antenna.
• C. QSL is verification of a contact; information includes call signs, band, mode, date/time, signal reports; can be physical or electronic.
• D. QSL stands for quantum signal lock.

Answer: (C)

QSL is the confirmation that a contact actually happened between two amateur stations. After you complete a QSO, you exchange this confirmation to prove the exchange and log the contact. The typical information included is the two call signs, the band or frequency used, the mode (such as CW, SSB, or a digital mode), the date and time of the contact (usually in UTC), and the signal reports. This confirmation can be in a physical QSL card that you mail or in an electronic record through systems like LoTW or eQSL. The data ensure both operators—and any awards programs you’re pursuing—can verify the contact. QSL is not a broker and not an antenna; it’s simply the verification of a completed contact.