QRPp

QRPp is a designation used in amateur radio to refer to ultra-low-power operation within the broader QRP category. It denotes transmitting at power levels well below the basic QRP threshold and is used by hobbyists who emphasize efficiency and signal handling over high power. The term is part of the Q-code tradition, and the exact meaning of the suffix p is informal and not standardized; it generally conveys a sense of “very low” power.

In practice, definitions of QRPp vary by group and context. Many operators consider QRPp to be at or below about 1 watt of output, with some enthusiasts focusing on milliwatts or tens of milliwatts. At these levels, success depends on highly efficient equipment, careful operating technique, and favorable propagation. Most QRPp activity centers on modes that maximize signal-to-noise and reception efficiency, such as CW (Morse) and certain digital modes.

Equipment and operating practices for QRPp emphasize simplicity and efficiency. Operators often use compact, low-power transceivers, minimalist power supplies, and carefully designed antennas, sometimes in portable or field settings. Operating strategies may include optimizing antenna height and orientation, using selective filters, and choosing times of day with better path conditions to maximize contact potential despite the tiny radiated power.

QRPp represents a niche within QRP culture, attracting practitioners who value experimentation, skillful construction, and the challenge of making reliable contacts with very little transmit power. It is commonly pursued in field events, contesting, and dedicated QRP communities.