Which are the preferred frequencies in radiotelephony for on-scene communications?
Which of the following frequencies have not been designated for on-scene communications in the Global Maritime Distress and Safety System?
Which one of the following channels and modes should be used when initiating a distress alert transmission?
The VHF Ch70 could be used to send ______.
Which equipment is required to be carried in the all sea areas?
The VHF Ch16 is called ______.
The frequency 156.525 MHz and 156.800 MHz should be used in the band of ______.
The Ch70 at short-range service could be used to send ______.
The VHF Ch 70 could be used to send ______.
Which of the following modulations is for the VHF radio telephone?
The frequency 156.525 MHz and156.800 MHz should be in the band of ______.
The frequency of VHF Ch 70 is ______ MHz.
Ship to ship distress alerting should be conducted by ______.
Which channel is designated for VHF DSC alerting?
The followings are all characteristics of portable VHF radio telephone sets, except ______.
