New MIL-STD-464 Revision C: Electromagnetic Environmental Effects Requirements for Systems

MIL-STD-464C, the Department of Defense’s primary Electromagnetic compatibility (EMC) standard for systems, has just been released.  It is one of Document Center’s best selling military documents.

It is the latest in a long line of standards that goes back to at least MIL‑I‑6051, “Interference Limits and Methods of Measurement; Aircraft Radio and Electronic Installations,” released in 1950. The MIL‑STD‑464 replaced MIL-I-6051D and several other documents in 1997.

MIL‑STD‑464 is the DoD top‑level EMC (aka E3, electromagnetic environmental effects) requirement set for procurement of complete or modified systems.  This might be airborne, sea, space, and ground systems (like a tank or a submarine), including associated ordnance.

This standard contains two sections, the main body and an appendix. The main body of the standard specifies a baseline set of requirements. The appendix portion provides rationale, guidance, and lessons learned for each requirement to enable the procuring activity to tailor the baseline requirements for a particular application. The appendix also permits Government and Industry personnel to understand the purpose of the requirements and potential verification methodology for a design. The appendix is not a mandatory part of this document.

The document states that changes are too numerous to identify due to the extent of the modifications.  However, apart from a few changes to section 2, the revisions seem to cluster in section 3.

This standard, previous editions, and all other publicly distributed DoD standards are available from Document Center Inc. via our website,, email (, phone (650-591-7600), and fax (650-591-7617).

Feel free to contact our expert sales staff with any additional questions you might have.