GMDSS. General. Test 7
GMDSS. General. Test 7
GMDSS: You are radio operator on board a vessel in distress. The nearest coast station is 100 miles away. If you want to transmit the alert on DSC, what frequency(s) would you use?
GMDSS: What is the code for distress priority in Inmarsat-A?
GMDSS: What is the main purpose of Digital Selective Calling systems?
GMDSS: Ohm's Law describes the connection between voltage (E), current (I) and resistance (R) in an electrical circuit (E= I x R). How could you find the current if both voltage and resistance are known?
GMDSS: Four 12 Volt lead-acid batteries are connected in series. Each battery has a capacity of 50 Ah. How long would these batteries run a radio station that drains 10 A?
GMDSS: What identification is used in a DSC?
GMDSS: What is the unit of electrical current?
GMDSS: During distress communication, there are several signals that may be used. What signal would be used by the coast station in charge of the distress traffic when asking for radio silence?
GMDSS: On what frequency bands would you expect to find maritime VHF?
GMDSS: Which transmission mode is used by the NAVTEX system?
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