![](https://static.youtibao.com/asksite/comm/pc/images/content_title_q.png)
The frequency __is used for NAVTEX-type MSI()
A.4, 125. 0 kHz using simplex mode
B.4, 209. 5 kHz using FEC mode
C.4, 209. 5 kHz using ARQ mode
D.4, 125. 0 kHz using FEC mode
![](https://static.youtibao.com/asksite/comm/pc/images/content_title_a.png)
B、4, 209. 5 kHz using FEC mode
A.4, 125. 0 kHz using simplex mode
B.4, 209. 5 kHz using FEC mode
C.4, 209. 5 kHz using ARQ mode
D.4, 125. 0 kHz using FEC mode
B、4, 209. 5 kHz using FEC mode
第2题
A.Change of timeslot only
B.Change of frequency only
C.Change of timeslot and/or change of frequency
第3题
A.Gain of both frequency diversity and interference diversity
B.Gain of frequency diversity only
C.Gain of interference diversity only
D.Neither gain of frequency diversity nor gain of interference diversity
第4题
A.Y
B.N
C.NG
第5题
strip it off if necessary to implement transparent transmission of clock frequency on PSN.
第6题
A.4*3
B.7*3
C.1*3
D.MRP
第7题
A.Passenge Addressing
B.High Frequency
C.Very High Frequency
D.Selective Calling
第9题
converts packet into clock frequency().