Question
Which of the following describes full break-in CW operation (QSK)?
Answer Options
- A) Breaking stations send the Morse code prosign “BK”
- B) Automatic keyers, instead of hand keys, are used to send Morse code
- C) An operator must activate a manual send/receive switch before and after every transmission
- D) Transmitting stations can receive between code characters and elements
Correct Answer: D
Explanation
Full break-in (or QSK, a procedural signal meaning, ‘Can you hear me between your signals?’), is an advanced mode of Continuous Wave (CW) operation where the receiving circuit of the transceiver is switched on instantly between the dots and dashes of the sent characters. This rapid switching is so fast that the transmitting operator can hear the receiving station break in even while they are sending.
The ability to receive between code characters and elements is the defining characteristic of QSK. This allows for seamless, instantaneous communication, as either station can stop transmitting and listen or begin transmitting at any moment, greatly speeding up the flow of traffic.
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