Amateur Radio QRP Calling Frequencies

Originally QRP was sent in Morse Code to quickly communicate that a station was using Reduced Power. Over the many years since that time it has come to generally mean "very-low-power," rather than "reduced power." Of course, "reduced" and "very-low" are both relative descriptions. One person's concept of very-low-power may be relatively high-power to another. Even so, among Radio Amateurs, QRP now is generally understood to mean a CW transmitter with 5-watts or less RF power output or SSB transmitter with 10-watts or less RF peak-envelope-power output.

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