Which EMCON level prohibits emitters unless explicitly authorized by the plan?

• A. EMCON 1
• B. EMCON 2
• C. EMCON 3
• D. EMCON 4

Answer: (D)

EMCON controls when and how transmitters are used to limit electronic emissions and reduce detection. The most restrictive level specifies that emitters are prohibited unless the operation plan explicitly authorizes their use. In this mode, nothing is transmitted unless there is a direct, written allowance in the plan, which helps maintain maximum stealth. The other levels ease these restrictions, allowing certain emitters to operate under predefined conditions, but they do not require explicit permission for every transmission like the most restrictive level does.