DSC & Alpha-Numeric ID:
Call Signs and SELCALs
A typical call sign for a large container ship under U. S. flag would be:
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Correct AnswerKBZY
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WBX1469
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NADN
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KPH
A typical call sign for a large container ship under U. S. flag would be:
(A). KBZY
Just remember the answer.
United States merchant vessels are given call signs beginning with the letters "W" or "K"
ITU assigned KBA to KBZ for United States. Reference
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What would the number 1090 indicate?
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A ship DSC MMSI number.
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Correct AnswerA coast station SITOR (NBDP) SELCAL number.
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A coast station DSC MMSI number.
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A ship station SITOR (NBDP) SELCAL number.
What would the number 1090 indicate?
(B). A coast station SITOR (NBDP) SELCAL number.
SELCALL NUMBERS:
Coast station – 4 digits
Ship station – 5 digits
Reference
For more info see Wikipedia's article on [SITOR][2]
For more info see Wikipedia's article on SITOR
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Which one of the following is a ship station SELCAL?
(C). 11243
Just remember the answer. It is the only one with 5 digits, and almost in numeric order.
The SELCAL, or selective user calling, works on HF and VHF frequencies. The SELCAL signal alerts to coming voice communication. Wikipedia SELCAL
For more info see Aviation Spectrum Resources pdf Selective Calling (SELCAL) Users Guide
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Which of the following is the call sign for a U.S.C.G. coast station?
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NERK
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KPH
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WCC
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Correct AnswerNMN
Which of the following is the call sign for a U.S.C.G. coast station?
(D). NMN
The NMN call sign is for the U.S. Coast Guard Communication Station: USCG Communications Command, Chesapeake VA/NMN
Also for HF DSC, digital selective calling:
Portsmouth/NMN
For details, please see US Coast Guard article on
HF DISTRESS AND USCG CONTACT FREQUENCIES
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What type of station would be assigned the call sign WAB2174?
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Correct AnswerTug boat
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Container ship
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Passenger ship
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Bulk Tanker
What type of station would be assigned the call sign WAB2174?
(A). Tug boat
Just remember the answer.
United States merchant vessels are given call signs beginning with the letters "W" or "K"
ITU assigned WAA to WAZ for United States. Reference
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What number will a ship station use to identify itself using SITOR (NBDP)?
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Four digit SELCAL.
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Correct AnswerFive digit SELCAL or 9 digit SELCAL number identical to MMSI.
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9 digit Inmarsat-B I. D. number.
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9 digit Inmarsat-C I.D. number.
What number will a ship station use to identify itself using SITOR (NBDP)?
(B). Five digit SELCAL or 9 digit SELCAL number identical to MMSI.
SEACAL uses 5-digit code, while MMSI uses 9-digit code, with the first three digits identifying the country.
SELCALL NUMBERS:
Coast station – 4 digits
Ship station – 5 digits
Reference
For more info see Wikipedia's article on SITOR
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