ARRL Technician Practice Exam

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What does the abbreviation PSK mean?

Phase Shift Keying
Pulsed Signal Kinetics
Packet Signal Keying
Phase Shift Kinetics

The correct answer is: Phase Shift Keying

The abbreviation PSK stands for Phase Shift Keying. This is a modulation scheme used to encode data in the phase of a carrier wave. In PSK, the phase of the carrier signal is changed to represent the data, allowing for efficient transmission of digital information over various communication mediums. This technique is widely utilized in digital communications because it provides robustness against noise, as the data can be accurately decoded even when there are variations in the signal. The other options represent various terms that do not align with widely recognized modulation techniques or concepts in telecommunications. For example, Pulsed Signal Kinetics and Phase Shift Kinetics do not correspond to standard methods or terminology used in the field. Packet Signal Keying also does not accurately describe the PSK modulation scheme. Hence, the most appropriate and widely accepted meaning of the abbreviation PSK is Phase Shift Keying.