What does the abbreviation PSK mean?

The abbreviation PSK stands for Phase Shift Keying. This is a digital modulation scheme that conveys data by changing the phase of a reference signal, typically a carrier wave. In PSK, information is represented in the phase shifts of the wave, making it an efficient method for transmitting digital data over radio waves.

Phase Shift Keying is commonly used in various communication systems, including amateur radio, because it allows for effective use of bandwidth and can be robust against noise and interference. The technology is foundational in digital radio communications, providing reliable transmission capabilities particularly for low-power, long-distance operations.

Understanding PSK and its function is vital for anyone involved with ham radio, as it is a key component of many modern digital communication techniques.