On what frequencies would the J3E emission be used for GMDSS Distress communications?

The J3E emission, which represents amplitude modulation (AM) with single sideband (SSB), is specifically designated for distress communications in the Global Maritime Distress and Safety System (GMDSS). The correct frequencies for this type of distress communication include 2182.0 kHz, known as the internationally recognized distress frequency for maritime communication, and other frequencies such as 16420.0 kHz and 8291.0 kHz, which are utilized for distress communications in different regions and conditions.

Choosing the first set of frequencies includes 2182.0 kHz, which is a primary frequency for distress calls, thereby establishing its critical role in ensuring safety at sea. The presence of 16420.0 kHz and 8291.0 kHz further supports the versatility necessary for effective distress messaging across varied maritime environments.

In contrast, while the other options present a mix of frequencies, they do not include the primary distress frequency (2182.0 kHz) or may contain frequencies not specifically allocated for distress communications. This specificity is crucial for ensuring the safety of maritime operations and effective search and rescue processes.