EMCON (Emissions Control) is a
military condition in which
electromagnetic emissions do not exceed a set limit. This helps to avoid electronic detection. The EMCON condition can be passed via an EMCON bill, directives, OP orders, message traffic or embarked or area commander.
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The selective and controlled use of electromagnetic, acoustic, or other emitters to optimize
command and control capabilities while minimizing, for
operations security (OPSEC): (a)
detection by enemy sensors; (b) to minimize mutual
interference among friendly systems; and/or (c) to execute a military deception plan. [After
JP1]