3-N-088: FAX, NAVTEX
3-88N1:
What is facsimile?
The transmission of printed pictures for permanent display on paper.
The transmission of still pictures by slow-scan television.
The transmission of characters by radioteletype that form a picture when printed.
The transmission of video by television.
3-88N2:
What is the standard scan rate for high-frequency 3 MHz - 23 MHz weather facsimile reception from shore stations?
120 lines per minute.
240 lines per minute.
150 lines per second.
60 lines per second.
3-88N3:
What would be the bandwidth of a good crystal lattice band-pass filter for weather facsimile HF (high frequency) reception?
1 kHz at -6 dB.
500 Hz at -6 dB.
6 kHz at -6 dB.
15 kHz at -6 dB.
3-88N4:
Which of the following statements about NAVTEX is true?
Receives MSI broadcasts using SITOR-B or FEC mode.
The ship station transmits on 518 kHz.
The ship receives MSI broadcasts using SITOR-A or ARQ mode.
NAVTEX is received on 2182 kHz using SSB.
3-88N5:
Which of the following is the primary frequency that is used exclusively for NAVTEX broadcasts internationally?
518 kHz.
2187.5 kHz.
4209.5 kHz.
VHF channel 16.
3-88N6:
What determines whether a NAVTEX receiver does not print a particular type of message content?
The subject indicator matches that programmed for rejection by the operator.
The message does not concern your vessel.
The transmitting station ID covering your area has not been programmed for rejection by the operator.
All messages sent during each broadcast are printed.
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Color key:
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● = Unseen
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● = Weak
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● = Review
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● = Learned
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● = Incorrect answer
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