Full access allows:
- Solve all tests online without limits;
- Remove all advertisements on website;
- Adding questions to favorite list;
- Save learning progress;
- Save results of practice exams;
- Watching all wrong answered questions.
81. Which VHF channel is used only for digital selective calling?
Channel 70 is exclusively designated for Digital Selective Calling (DSC) and prohibits voice communications. The Global Maritime Distress and Safety System (GMDSS) mandates this use, ensuring DSC alerts are reliably monitored and do not experience interference from voice traffic, with subsequent communication shifting to a designated voice channel.
Comments (0)
There are no comments at the moment. If you found an error or think question is incorrect, tell everyone about it
Only signed in users can write comments
Signin