SpectrumWiki: A framework for a crowd-sourced repository of information on spectrum usage

The radio spectrum is used for an enormous number and variety of applications. Some are common and well-known (e.g., cell phones & TV broadcast), some are highly specialized (e.g., ionosondes & LoJack), and still others are of historic interest only (e.g., CONELRAD & Omega). As radio spectrum becomes more valuable and crowded, interest has grown in knowing who uses what bands for what purposes.