Which EMCON level allows for no electronic emissions or radiations at all?

The EMCON (Emission Control) level that allows for no electronic emissions or radiations at all is Alpha. This level is critical in maintaining operational security and reducing the detectability of a vessel or force by enemy sensors. In EMCON Alpha, all electronic devices must be secured, which means that any equipment that emits electromagnetic signals, such as radar, radio communications, and identification friend or foe (IFF) systems, must be turned off or placed in a non-emitting state.

This level is typically employed in high-threat environments where the risk of detection is severe, and the goal is to operate stealthily. The emphasis on total silence allows naval forces to execute operations without revealing their position to potential adversaries. In contrast, other EMCON levels allow for limited emissions, recognizing that some communication or electronic activity might be necessary for coordination, situational awareness, or safety. However, in EMCON Alpha, the absolute priority is on minimizing all forms of electronic signature.