QRP comes from the Morse code short for "Reduce your power". In current amateur radio practice, operating QRP means transmitting with less than 10 watts voice, or less than 5 watts using CW (Morse code).

QRP has a appeal across the entire spectrum of the amateur radio hobby. For old timers, operating QRP gives them a new challenge. Perhaps they have already worked 100 countries using 100 watts so now they can try it again using low power. 

For new operators, it offers a cheap introduction to the hobby. Used QRP rigs and new kits can be put on the air for around $100.00.

Hams who are interesting in building their own rigs will have lots of fun with the abundance of kits and homebrew projects.