WELCOME to C63^® C63^®is a major United States EMC standards developers focused on many aspects of emission and immunity measurements, instrumentation and resource for test lab competency and quality control. Its standards are highly diversified as can be seen in this web page: http://www.c63.org/documents/misc/matrix/c63_standards.htm. The uniqueness of the committee is its close link on EMC standards with the needs of manufacturers and testing organizations, but most importantly the acceptance of its standards by US regulatory organizations such as the Federal Communications Commission which references several C63^®standards in its Rules. The composition of its Main Committee is shown in http://www.c63.org/documents/rosters_public/c63_members.htm where the broad diversity of active members represents a broad spectrum of those that need EMC standards considerations that the committee serves. The formal scope which has been in existence for many decades is as follows: Development of definitions and methods of measurement of electromagnetic noise and signal strengths (radiated and conducted), determination of levels of signal strength, levels of unwanted sources, limiting ratio of noise (and/or unwanted sources) to signals and development of methods of control of, and guidelines for influence, coupling and immunity. Where subjects dealt with overlap with those of other national committees, appropriate liaison will be established. To accomplish the above activities, C63® develops electromagnetic compatibility standards documents which via its secretariat publishes, archives and sells these standards to the general public. As can be seen, the committee’s breadth of coverage is extensive. This leaves many opportunities to join in its work which is encouraged. For further information, contact the C63® Secretary, Jerry Ramie or the Chairman, Dan Hoolihan.