On what frequencies would the J3E emission...

Question 1 / 27070Nua6Bay7tftFKZRKMqS4

Question 1 of 27070Nua6Bay7tftFKZRKMqS4

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

Question 1 of 27070

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

🔍 Key Concepts

• J3E emission means single sideband, suppressed carrier radiotelephony • Know which frequencies are designated GMDSS distress and safety channels versus calling/working channels • Distress frequencies in HF/MF bands have specific pairings of mode and purpose (voice vs DSC)

💭 Think About

• First, identify which of the listed frequencies are known HF/MF GMDSS distress and safety VOICE channels, not DSC-only channels • Check which of these frequencies are associated with DSC (digital selective calling) and which are for radiotelephony (voice); J3E is used for voice • Look at the typical GMDSS HF distress VOICE frequencies and see which answer choice groups them correctly together

✅ Before You Answer

• Verify which frequencies are DSC distress (F1B/J2B type emissions) and therefore NOT correct for J3E voice • Confirm that 2182 kHz has a specific traditional use and see whether it is primary in GMDSS distress today • Match each option’s frequencies against an official list of HF/MF distress and safety radiotelephony channels used with J3E emission

Question 1 of 27070

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

2182.0 kHz, 16420.0 kHz or 8291.0 kHz.

2182.0, 2187.5 kHz or 8414.5 kHz.

8414.5 kHz, 8291.0 kHz or 8376.5 kHz.

4125.0 kHz, 16420.0 kHz or 4177.5 kHz.

Question 1 / 27070Nua6Bay7tftFKZRKMqS4

Question 1 of 27070Nua6Bay7tftFKZRKMqS4

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

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Question 1 of 27070

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