According to some hams, a well-stocked junk box is a requirement for anyone who likes to build, repair, or tinker with radio equipment and electronic gear. Keeping an ample supply of spare electronic components provides the ham with parts to build a variety of electronic projects, as well as "spares" of components needed for repairs.
Some amateur radio operators believe that a well-stocked junk box is essential for anyone who enjoys working on radios or electronics. This box should contain enough spare electronic components to allow them to build new devices and fix existing ones.