GMDSS. FCC Test 50

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In FM communications, the information is applied to the carrier by:
For RF communications, 'modulation' is best defined as:
In an AM signal using voice:
The proper sequence of emissions corresponding to the sequence AM-Voice DSB, SSB-Voice without carrier, USB-Voice with carrier and FM-Voice, is:
The proper sequence of emissions corresponding to the sequence SSB-Voice without carrier, USB-Voice with carrier, FM-Voice and Sitor telex is:
For RF communications, 'bandwidth' is best defined as:
Communications with an emission of J3E would typically have a channel spacing of:
Communications with an emission of F1B/J2B would typically have a channel spacing of:
How are high seas (HF) radiotelephone communications initially established between a vessel and a public correspondence station?
When placing a SSB MF/HF call to a Coast Station, you should always:
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