MIL-STD-461[1] is a United States Military Standard that describes how to test equipment for electromagnetic compatibility.
The United States Department of Defense issued MIL-STD-461 in 1967 to integrate electromagnetic compatibility into the research and development stage for defense communications technology.
[2] Various revisions of MIL-STD-461 have been released.
Many military contracts require compliance to MIL-STD-461E.
[3] While MIL-STD-461 compliance is technically not required outside the US military, many civilian organizations also use this document.