§  15.23   Home-built devices.

   (a) Equipment authorization is not required for devices that are not
   marketed, are not constructed from a kit, and are built in quantities
   of five or less for personal use.

   (b) It is recognized that the individual builder of home-built
   equipment may not possess the means to perform the measurements for
   determining compliance with the regulations. In this case, the builder
   is expected to employ good engineering practices to meet the specified
   technical standards to the greatest extent practicable. The provisions
   of § 15.5 apply to this equipment.