QRP

QRP is a CW prosign that means "low power". It is commonly agreed that QRP refers to power of 5 watts or less. (The term QRPp is used for power less than 1 watt.)

The number of amateur operators engaging in QRP is growing. QRP rigs are ideal for field use, and they are easy to build as kits or homebrew. Because no high-power output transistors are needed in the final transmitter stage, they are inexpensive and safe for building, modification, and experimentation. Because they draw little power, small batteries or solar cells are sufficient to power them.