Which statement about survival craft portable two-way VHF radiotelephone equipment is NOT true?

Which statement about survival craft portable two-way VHF radiotelephone equipment is NOT true?

• A. It operates simplex on channel 13.
• B. It is designed for survival craft and should be operable in life rafts.
• C. It must be maintained and tested as required.
• D. It operates simplex on channel 70 and at least one other channel.

Answer: (D)

Survival craft VHF radios are built to be ready for use in life rafts and must be reliable, with regular maintenance and testing as required. They are designed for life-saving communications and typically operate on safety-focused channels, with channel 16 reserved for distress and calling and a second voice channel used for coordination. Channel 70, however, is dedicated to digital selective calling (DSC) rather than voice, so a survival craft radio does not operate voice simplex on channel 70. It may use channel 16 and another voice channel for normal conversations or DSC procedures, but not voice on channel 70. That’s why the statement claiming simplex operation on channel 70 plus another channel is not true.

Survival craft VHF radios are built to be ready for use in life rafts and must be reliable, with regular maintenance and testing as required. They are designed for life-saving communications and typically operate on safety-focused channels, with channel 16 reserved for distress and calling and a second voice channel used for coordination. Channel 70, however, is dedicated to digital selective calling (DSC) rather than voice, so a survival craft radio does not operate voice simplex on channel 70. It may use channel 16 and another voice channel for normal conversations or DSC procedures, but not voice on channel 70. That’s why the statement claiming simplex operation on channel 70 plus another channel is not true.