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Subelement A
Rules & Regulations
Section 1
Equipment Requirements
What is a requirement of all marine transmitting apparatus used aboard United States vessels?
  • Correct Answer
    Only equipment that has been certified by the FCC for Part 80 operations is authorized.
  • Equipment must be type-accepted by the U.S. Coast Guard for maritime mobile use.
  • Certification is required by the International Maritime Organization (IMO).
  • Programming of all maritime channels must be performed by a licensed Marine Radio Operator.

§ 80.203 Authorization of transmitters for licensing.

(a) Each transmitter authorized in a station in the maritime services after September 30, 1986, except as indicated in paragraphs (g), (h) and (i) of this section, must be certified by the Commission for part 80 operations.

Part 80

FCC pdf presentation on Part 80 - very good

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What transmitting equipment is authorized for use by a station in the maritime services?
  • Transmitters that have been certified by the manufacturer for maritime use.
  • Correct Answer
    Unless specifically excepted, only transmitters certified by the Federal Communications Commission for Part 80 operations.
  • Equipment that has been inspected and approved by the U.S. Coast Guard.
  • Transceivers and transmitters that meet all ITU specifications for use in maritime mobile service.

47 CFR § 80.203 - Authorization of transmitters for licensing.

(a) Each transmitter authorized in a station in the maritime services after September 30, 1986, except as indicated in paragraphs (g), (h) and (i) of this section, must be certified by the Commission for part 80 operations.

47 CFR § 80.203 - Authorization of transmitters for licensing.

FCC pdf presentation on Part 80 - very good

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Small passenger vessels that sail 20 to 150 nautical miles from the nearest land must have what additional equipment?
  • Inmarsat-B terminal.
  • Inmarsat-C terminal.
  • Aircraft Transceiver with 121.5 MHz.
  • Correct Answer
    MF-HF SSB Transceiver.

Small vessels that stay relatively close to shore (150 nautical miles) don't necessarily need satellite equipment.

Thus, they are allowed to get by with a terrestrial transceiver (Single-sideband modulation, or SSB) that will be able to reach the closest shore station directly, without needing a great deal of power to bounce off a satellite.

Hence, the answer:

D. MF-HF SSB Transceiver.

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What equipment is programmed to initiate transmission of distress alerts and calls to individual stations?
  • NAVTEX.
  • GPS.
  • Correct Answer
    DSC controller.
  • Scanning Watch Receiver.

DSC (Digital Selective Calling) controller

Digital Selective Calling (DSC) service is used to for transmitting digital messages, using the medium-frequency (MF), high-frequency (HF) and very-high-frequency (VHF) maritime radio systems. It is a component of the Global Maritime Distress Safety System (GMDSS).1

For info about DSC see Wikipedia article DSC Service

For US Coast Guard info on DSC, see DSC Service

NAVTEX is teletype-style mode of broadcasting marine safety information

GPS is only a satellite receiver

Scanning Watch Receiver is also just a receiver.

So, none of these would work for making a distress call.

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What is the minimum transmitter power level required by the FCC for a medium-frequency transmitter aboard a compulsorily fitted vessel?
  • At least 100 watts, single-sideband, suppressed-carrier power.
  • Correct Answer
    At least 60 watts PEP.
  • The power predictably needed to communicate with the nearest public coast station operating on 2182 kHz.
  • At least 25 watts delivered into 50 ohms effective resistance when operated with a primary voltage of 13.6 volts DC.

47 CFR 80 states: § 80.855 Radiotelephone transmitter.

(c) The transmitter must be capable of transmitting clearly perceptible signals from ship to ship during daytime under normal conditions over a range of 150 nautical miles.

(2) The output power is not less than 60 watts peak envelope power for H3E and J3E emission on the frequency 2182 kHz and for J3E emission on the frequency 2638 kHz...

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Shipboard transmitters using F3E emission (FM voice) may not exceed what carrier power?
  • 500 watts.
  • 250 watts.
  • 100 watts.
  • Correct Answer
    25 watts.

F3E is usually used in the VHF range. Hence, according to 47 CFR 80.215:

(1) Ship stations 156-162 MHz - 25W Reducible to 1 watt or less, except for transmitters limited to public correspondence channels and used in an automated system.

(2) Ship stations 216-220 MHz - 25W

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