FCC Element 7 - GMDSS Radio Operating, USCG prep certification 2026

Progress: 24% (23/94)

Learning progress ?

1. What is the fundamental concept of the GMDSS?Not learned 2. The primary purpose of the GMDSS is:Not learned 3. What is the basic concept of GMDSS?Not learned 4. GMDSS is primarily a system based on:Not learned 5. What is the responsibility of compulsory GMDSS vessels?Not learned 6. GMDSS is required for which of the following?Not learned 7. Which GMDSS system utilizes terrestrial radio techniques?Not learned 8. What equipment utilizes satellite communications?Not learned 9. What equipment is used in or near the survival craft?Not learned 10. What equipment is programmed to initiate transmission of Distress alerts and calls to individual stations?Not learned 11. What system provides accurate vessel position information to the GMDSS equipment?Not learned 12. Which of these can be used to receive MSI?Not learned 13. Which of the following regions lie outside Sea Areas A1, A2, and A3?Not learned 14. What sea area is defined as being within range of a shore-based MF station that provides for continuous DSC alerting?Not learned 15. If a vessel is engaged in local trade and at no point in its voyage travels outside the range of a VHF shore station with continuous DSC alerting then the vessel is operating in what area?Not learned 16. What is defined as an area, excluding sea areas A1 and A2, within the coverage of an Inmarsat geostationary satellite in which continuous alerting is available?Not learned 17. SITOR (NBDP) equipment is a partial or alternate carriage requirement under GMDSS for vessels operating in which sea area(s)?Not learned 18. What is defined as the area within the radiotelephone coverage area of at least one VHF coast station in which continuous DSC alerting is available as defined by the IMO regulation for GMDSS?Not learned 19. Which of the following is a functional or carriage requirement for compulsory vessels?Not learned 20. Which GMDSS communication functions must all compulsory vessels be capable of performing to meet International Maritime Organization requirements?Not learned 21. GMDSS-equipped ships will be required to perform which of the following communications functions?Not learned 22. What equipment can be used to receive Maritime Safety Information?Not learned 23. Which of the following are required GMDSS functions?Not learned 24. Which of the following are required GMDSS functions for vessels?Not learned 25. Which statement is true regarding a vessel equipped with GMDSS equipment that will remain in Sea Area A1 at all times?Not learned 26. What statement is true regarding the additional equipment carriage requirement imposed for the survival craft of vessels over 500 gross tons?Not learned 27. Vessels operating in which sea area(s) are required to carry either Inmarsat or HF equipment or a combination thereof under GMDSS?Not learned 28. Within a single sea area, what is the primary reason GMDSS imposes carriage requirements for different radio subsystems?Not learned 29. If operating within Ocean Area A1, and outside of NAVTEX coverage, a GMDSS-equipped vessel must carry:Not learned 30. What is the equipment carriage requirement for survival craft under GMDSS?Not learned 31. Which of the following statements concerning maintenance requirements is FALSE?Not learned 32. Which of the following statements concerning GMDSS maintenance requirements is true?Not learned 33. Which of the following is a GMDSS requirement for all vessels over 300 gross tons operating within range of a MF-DSC equipped shore station?Not learned 34. What statement is correct regarding the maintenance requirements for A3 ships under GMDSS?Not learned 35. A ship operating in sea area A-3 must have the following provisions for maintenance:Not learned 36. A ship operating in sea area A-1 must have the following provisions for maintenance:Not learned 37. What is the frequency range for Medium Frequency?Not learned 38. What is the frequency range for High Frequency?Not learned 39. What is the frequency range for Very High Frequency?Not learned 40. What is the frequency range for Ultra High Frequency?Not learned 41. What is the frequency range for Super High Frequency?Not learned 42. What is the primary frequency range for terrestrial communications using skywave propagation?Not learned 43. Which of the following systems is most susceptible to fading or static interference?Not learned 44. Which system is most likely to be affected by atmospheric disturbances?Not learned 45. Which of the following systems is least susceptible to fading or static interference?Not learned 46. Which of the following systems is least susceptible to atmospheric disturbances?Not learned 47. Which of the following frequency bands would most likely provide reliable communications between two stations that are 100 miles (160 km) apart?Not learned 48. Which system has the least effective radius of operation?Not learned 49. What statement best describes modulation?Not learned 50. What statement best describes demodulation?Not learned 51. Which statement best describes amplitude modulation?Not learned 52. What is the emission designation for MF-HF voice signals?Not learned 53. Which statement best describes frequency modulation?Not learned 54. What is the emission designation for VHF-FM?Not learned 55. Which of the following statements describes the carrier?Not learned 56. On what frequencies would the J3E emission be used for GMDSS Distress communications?Not learned 57. How many sidebands are present in the J3E mode?Not learned 58. What is the signal transmitted in H3E mode?Not learned 59. What is the signal transmitted in J2B mode?Not learned 60. Which of the following statements is true?Not learned 61. What is the channel spacing for MF-HF voice frequencies?Not learned 62. What is the channel spacing for authorized F1B/J2B frequencies?Not learned 63. You look up a frequency table and all the listings end in either .0 or .5 kHz. What kind of emission is used with these frequencies?Not learned 64. How many SITOR (NBDP) signals can occupy the space of one voice signal?Not learned 65. Which emission mode occupies the most bandwidth?Not learned 66. Which mode occupies the least bandwidth?Not learned 67. A vertical (whip) antenna has a radiation pattern best described by?Not learned 68. Why is an antenna coupler/tuner required for MF-HF transmissions?Not learned 69. A vertical quarter wave antenna with a good ground connection will:Not learned 70. What is the most common type of antenna for GMDSS MF-HF?Not learned 71. What is the purpose or function of the antenna coupler/tuner?Not learned 72. What advantage does a vertical whip have over a long wire?Not learned 73. How often must a compulsory vessel's GMDSS radio station be inspected?Not learned 74. What periodic inspection is required in order to remain in compliance with the regulations regarding GMDSS ship radio station inspections?Not learned 75. Which statement is FALSE regarding a GMDSS-equipped ship?Not learned 76. Which statement is FALSE regarding a GMDSS equipped ship?Not learned 77. During an annual GMDSS station inspection:Not learned 78. Which situation is least likely to result in an inspection of the radio installation by foreign governments or administrations?Not learned 79. Which of the following references should be consulted for information on the proper setup and use of GMDSS equipment?Not learned 80. Where can GMDSS regulations pertaining specifically to U.S.-flag vessels be found?Not learned 81. What publications should the GMDSS Radio Operator consult to review the proper procedures to be followed in Distress situations under GMDSS?Not learned 82. Which of the following documents or publications are required by the FCC for GMDSS vessels on international voyages (other than the Great Lakes)?Not learned 83. Which of the following documents or publications are required by Part 80 of the FCC rules for vessels on international voyages (other than the Great Lakes)?Not learned 84. Which of the following references should be consulted to identify the name of a vessel based on its Maritime Mobile Service Identity?Not learned 85. Which of the following maintenance functions is NOT the responsibility of the GMDSS Radio Operator?Not learned 86. When may a compulsory vessel NOT be allowed to leave port?Not learned 87. Which statement is true regarding the maintenance of GMDSS equipment at sea?Not learned 88. Which of the following service or maintenance functions may NOT be performed by the holder of a GMDSS Radio Operator License?Not learned 89. What are the conditions, under GMDSS, whereby a ship is NOT allowed to depart from any port?Not learned 90. What determines the spares and maintenance materials requirements for GMDSS equipment?Not learned 91. Which FCC license meets the requirement to serve as a GMDSS operator?Not learned 92. Which of the following statements concerning GMDSS Radio Operator requirements is FALSE?Not learned 93. Which FCC license meets the requirements to perform or supervise the performance of at-sea adjustments, servicing, or maintenance which may affect the proper operation of the GMDSS station?Not learned 94. Which statement is FALSE regarding the radio operator requirements for a GMDSS-equipped ship station?Not learned 95. Which of the following are personnel, functional, or equipment FCC requirements of the GMDSS?Not learned 96. How many GMDSS radio maintainers must be carried aboard a compulsory vessel if the At-Sea maintenance method is used?Not learned 97. Which statement is FALSE regarding the GMDSS requirement for ship sources of energy?Not learned 98. How often should the charge condition of RSE GMDSS batteries be checked?Not learned 99. Which term describes the source of energy required to supply the GMDSS console with power if the ship’s source of main or emergency energy fails?Not learned 100. What characteristics describe the GMDSS Reserve Source of Energy (RSE)?Not learned 101. What is the requirement for emergency and reserve power in GMDSS radio installations?Not learned 102. Which of the following terms is defined as a back-up power source that provides power to radio installations for the purpose of conducting Distress and Safety communications when the vessel's main and emergency generators cannot?Not learned 103. Under GMDSS, a compulsory VHF-DSC radiotelephone installation must be tested at what minimum intervals at sea?Not learned 104. Which statement concerning the testing of a compulsory radiotelephone station is FALSE?Not learned 105. While underway, how frequently is the DSC controller required to be tested?Not learned 106. At sea, all required equipment (other than Survival Craft Equipment) must be proven operational by:Not learned 107. The best way to test the MF-HF SITOR (NBDP) system is:Not learned 108. The best way to test the Inmarsat-C terminal is:Not learned 109. A vessel certified for service in Sea Area A3 is required to maintain a watch on:Not learned 110. A vessel certified for service in Sea Area A-2 is required to maintain watch on:Not learned 111. What are the mandatory DSC watchkeeping bands/channels?Not learned 112. Proper watchkeeping includes the following:Not learned 113. Proper watchkeeping includes the following:Not learned 114. Which is true concerning a required watch on VHF Ch-16?Not learned 115. Which of the following statements meets requirements for 47 CFR 80 Subpart-W?Not learned 116. Which of the following statements is FALSE?Not learned 117. Where should the GMDSS radio log be kept on board ship?Not learned 118. How long must the radio log be retained on board before sending it to the shoreside licensee?Not learned 119. Which statement concerning radio log archival by the station licensee is FALSE?Not learned 120. Which of the following logkeeping statements is FALSE?Not learned 121. A typical call sign for a large container ship under U. S. flag would be:Not learned 122. What would the number 1090 indicate?Not learned 123. Which one of the following is a ship station SELCAL?Not learned 124. Which of the following is the call sign for a U.S.C.G. coast station?Not learned 125. What type of station would be assigned the call sign WAB2174?Not learned 126. What number will a ship station use to identify itself using SITOR (NBDP)?Not learned 127. What is the MID?Not learned 128. How many digits are in the MID (Maritime Identification Digits)?Not learned 129. What does the MID (Maritime Identification Digits) signify?Not learned 130. Which of the following numbers indicates a U.S. flag ship station?Not learned 131. Which of the following MMSI numbers indicates a U.S. flag ship station?Not learned 132. Which of the following numbers indicates a ship station MMSI?Not learned 133. A DSC call is received from a station with a MMSI number of 003669991. What type of station made the call?Not learned 134. A valid MMSI number for a DSC call to a specific group of vessels is:Not learned 135. A MMSI 030346239 indicates what?Not learned 136. Which of the following statements concerning MMSI is true?Not learned 137. Which of the following statements concerning MMSI is FALSE?Not learned 138. Which of the following statements concerning MMSI is true?Not learned 139. Which of the following would indicate a standard AIS SART?Not learned 140. Which of the following would indicate a MOB AIS SART?Not learned 141. Which of the following would indicate an F77 terminal?Not learned 142. Which of the following would indicate an F77 terminal?Not learned 143. Which of the following would indicate an EPIRB AIS SART?Not learned 144. Which of the following would indicate an F77 terminal?Not learned 145. You receive a TELEX with the sender’s I.D. of 433863491. What type of terminal sent this message to your vessel?Not learned 146. You receive a TELEX with the sender’s I.D. of 436640927. What type of terminal sent this message to your vessel?Not learned 147. Which of the following would indicate an Inmarsat-C terminal?Not learned 148. Which of the following would indicate an Inmarsat-C terminal?Not learned 149. Which of the following would indicate an Inmarsat-C terminal?Not learned 150. Which of the following would indicate an Inmarsat-C terminal?Not learned 151. What sequence best describes an MF-HF DSC Distress Alert transmission?Not learned 152. MF-HF DSC alerts are transmitted using what emission type?Not learned 153. When sending a DSC call:Not learned 154. DSC transmissions are encoded:Not learned 155. DSC transmissions are received:Not learned 156. Properly formatted MF-HF DSC transmissions can request which of the following emissions for follow on communications?Not learned 157. Which of the following statements concerning DSC equipment is true?Not learned 158. What is the action that a GMDSS Radio Operator should take when a DSC Distress alert is received requesting J3E?Not learned 159. What does the DSC control unit do if the GMDSS Radio Operator fails to insert updated information when initiating a DSC Distress alert?Not learned 160. A DSC Distress alert:Not learned 161. In all cases, the transmit frequency of a MF/HF console DSC Distress alert:Not learned 162. DSC relays of Distress alerts to a coast station:Not learned 163. Which of the following is NOT a DSC watch frequency?Not learned 164. Which of the following channels and modes should be used when initiating a Distress alert transmission?Not learned 165. How many total frequencies are available for DSC Distress alerting?Not learned 166. Which of the following watches must a compulsory Sea Area A1 vessel maintain?Not learned 167. Which of the following are the MF/HF DSC Distress watch frequenciesNot learned 168. How many HF DSC Distress watch channels must be guarded by a compulsory vessel underway.Not learned 169. What is usually the first step for a GMDSS Radio Operator to take when initiating a Distress priority message via Inmarsat?Not learned 170. Which of the following statements is true regarding Distress alerting under GMDSS?Not learned 171. If a GMDSS Radio Operator initiates a DSC Distress transmission but does not insert a message, what happens?Not learned 172. Repetition of a DSC Distress alert is normally automatic if not acknowledged after a delay of:Not learned 173. For a MF/HF DSC Distress alert which statement is FALSE?Not learned 174. Which statement regarding an MF/HF DSC Distress alert is true:Not learned 175. If a VHF-DSC Distress alert is transmitted what channel is used for follow-on voice transmission?Not learned 176. If a MF-DSC Distress alert is transmitted what frequency is used for follow-on voice transmission?Not learned 177. If a HF-DSC Distress alert is transmitted what frequency is used for follow-on voice transmission?Not learned 178. What is the proper format for a Distress follow on voice transmission? (3x is three times),Not learned 179. What information should be included in a Distress follow on voice transmission after a DSC Alert?Not learned 180. What information is NOT vital in a Distress follow on voice transmission after a DSC Alert?Not learned 181. Which statement is true regarding the receipt and acknowledgement of actual Distress follow-on communications by GMDSS ship stations?Not learned 182. What is meant by the acronym “EOS" in a DSC message?Not learned 183. What is the proper procedure to be followed upon receipt of a Distress alert transmitted by use of Digital Selective Calling techniques?Not learned 184. What is meant by the acronym “ECC" in a DSC message?Not learned 185. What action should be taken on receipt of a DSC Distress alert?Not learned 186. What action should be taken if a Distress alert is received on the 12 MHz DSC frequency?Not learned 187. Your ship received a Distress relay from a coast station on DSC frequency 2187.5 kHz. What action should the watch officer take?Not learned 188. Your ship received a Distress relay from a coast station on DSC VHF channel 70. What action should the watch officer take?Not learned 189. Under what condition would you not relay a DSC Distress alert?Not learned 190. The relay of DSC Distress alerts:Not learned 191. Transmission of a DSC Distress alert by a station on behalf of another vessel actually in Distress should NOT occur:Not learned 192. DSC Relays of DSC Distress alerts received from other ships should be done?Not learned 193. What action should you take after sending a false or mistaken Distress alert on VHF?Not learned 194. What action should you take after sending a false or mistaken Distress alert on MF?Not learned 195. What action should you take after sending a false or mistaken Distress alert on MF?Not learned 196. What action should you take after sending a false or mistaken Distress alert on 8 MHz?Not learned 197. What action should you take after sending a false or mistaken Distress alert on 12577.0 kHz?Not learned 198. What action should you take after sending a false or mistaken Distress alert on Inmarsat-C?Not learned 199. What is the fundamental purpose for imposing radio silence?Not learned 200. When can routine communications be resumed after radio silence has been imposed?Not learned 201. What is meant by the term "Seelonce Mayday”?Not learned 202. How is "radio silence" imposed?Not learned 203. How are normal working conditions restored on a SITOR (NBDP) frequency on which radio silence had been imposed?Not learned 204. How are normal working conditions restored after radio silence has been imposed?Not learned 205. The Radiotelephone Urgency signal is:Not learned 206. Which of the following situations would normally use the Urgency priority?Not learned 207. Which of the following situations would NOT properly use the Urgency priority?Not learned 208. Which of the following situations would normally use the Urgency priority?Not learned 209. The Urgency Priority should be used for:Not learned 210. If the Watch Officer hears "PAN PAN" spoken 3 times it means:Not learned 211. When the GMDSS Radio Operator on watch hears "Securite" spoken three times, he can expect to receive the following information:Not learned 212. Which of the following situations would normally use the Voice designation "Securite"?Not learned 213. Which of the following situations would normally use the Safety priority?Not learned 214. Which of the following situations would normally use the Safety priority?Not learned 215. The Radiotelephone Safety signal is:Not learned 216. Which of the following situations would normally use the Safety priority?Not learned 217. Which of the following frequencies and modes is allocated for Distress alerting in GMDSS?Not learned 218. Which of the following frequencies is designated for On-scene Distress and Safety communications?Not learned 219. Which channel is designated for GMDSS Digital Selective Calling?Not learned 220. How many MF frequencies are available for DSC Distress related calls?Not learned 221. How many HF frequencies are available for DSC Distress related calls?Not learned 222. How many frequencies are available under GMDSS for DSC Distress-related calls?Not learned 223. Which of the following steps should be taken, if possible, when the vessel must be abandoned because of a Distress situation?Not learned 224. Which action is the most appropriate action for a GMDSS radio Operator to take in a Distress situation where immediate help is needed, but the vessel is not sinking nor needs to be abandoned?Not learned 225. DSC is used primarily to:Not learned 226. GMDSS vessels equipped for Sea Areas A2, A3 or A4 must maintain a continuous DSC watch on 2187.5 kHz.Not learned 227. Which statement is true regarding Distress communications under GMDSS?Not learned 228. When operating in coastal waters (sea area A1), a GMDSS-equipped vessel must:Not learned 229. What indication is given to the personnel in a survival craft of the approach of SAR craft?Not learned 230. Which of the following would aid the detection of a SART's signal?Not learned 231. How can a SART's detection and effective range be maximized?Not learned 232. Which statement is NOT true regarding the SART?Not learned 233. At what point does a SART begin transmitting?Not learned 234. A SART's signal cannot be detected:Not learned 235. How does the searching vessel's radar interrogate a survival craft SART?Not learned 236. What radar display changes indicate the correct approach to a SART and what care should be taken in a SAR situation?Not learned 237. How can rescue personnel detect that a SART is transmitting in the immediate vicinity?Not learned 238. What signal is detected as originating from an AIS SART and how is the signal displayed?Not learned 239. How can vessel personnel detect the operation of a SART in its vicinity?Not learned 240. What is not an advantage of an AIS SART signal when compared to a radar-based SART signal?Not learned 241. Which of the following statements concerning testing and maintenance of SARTs is true?Not learned 242. Why is it important to limit the duration of testing a SART?Not learned 243. What statement is true regarding tests and maintenance that could be provided for the SART?Not learned 244. Why should functional testing of a SART be minimized?Not learned 245. Which is NOT a valid maintenance and testing function for a SART?Not learned 246. The SART is required to have sufficient battery capacity to operate in the stand-by mode for what period of time?Not learned 247. Which is not a function of a satellite under COSPAS-SARSAT using satellite EPIRBs?Not learned 248. Which of the following satellite systems is of particular & dedicated importance to search and rescue missions under GMDSS?Not learned 249. Which of the following statements concerning COSPAS-SARSAT is FALSE?Not learned 250. Which of the following statements concerning COSPAS-SARSAT is FALSE?Not learned 251. Which of the following statements concerning the EPIRB system is true?Not learned 252. Which of the following statements concerning satellite EPIRBs is true?Not learned 253. What features may be found on GMDSS satellite EPIRB units?Not learned 254. What feature is not a component of a 406 MHz satellite EPIRB?Not learned 255. What statement is true regarding 406 MHz EPIRB transmissions?Not learned 256. Which of the following is normally part of 406 MHz satellite EPIRBs?Not learned 257. Which of the following statements concerning EPIRBs is FALSE?Not learned 258. Which of the following EPIRBs is most likely to be used to transmit a Distress alert signal?Not learned 259. Which of the following would best be used for visual detection of a distressed vessel?Not learned 260. Which piece of required GMDSS equipment is the primary source of transmitting locating signals?Not learned 261. What may be used as a homing signal by the search and rescue vessels in the immediate vicinity of the ship in Distress?Not learned 262. What part of a satellite EPIRB may function as a visual aid to rescue vessels?Not learned 263. What is an example of a locating signal?Not learned 264. Which device provides the best method to locate a ship in Distress or survival craft in the GMDSS?Not learned 265. With what other stations may portable survival craft transceivers NOT communicate?Not learned 266. Equipment for radiotelephony use in survival craft stations under GMDSS must have what capability?Not learned 267. Equipment for radiotelephony use in survival craft stations under GMDSS must have what characteristics?Not learned 268. Which statement is NOT true regarding the requirements of survival craft portable two-way VHF radiotelephone equipment?Not learned 269. Which statement is NOT true regarding the requirements of VHF Survival Craft Transceivers?Not learned 270. Which statement is NOT true regarding the requirements of survival craft portable two-way VHF radiotelephone equipment?Not learned 271. Which of the following has been designated for “On-scene” communications in GMDSS?Not learned 272. Which of the following channels is designated as the VHF follow-on communications channel and is required in all portable survival craft equipment?Not learned 273. Which of the following frequencies have been designated for “On-scene” communications in the Global Maritime Distress and Safety System?Not learned 274. Which of the following frequencies has NOT been designated for GMDSS “On-scene” or SAR communications?Not learned 275. “On-scene" communications would best be represented by?Not learned 276. For “On-scene” communications, vessels in Distress and SAR Aircraft should use?Not learned 277. Which action should the GMDSS radio operator take in a Distress situation when embarking in survival craft?Not learned 278. Which of these would be vital to a GMDSS SAR situation in polar regions?Not learned 279. Which statement is FALSE regarding the COSPAS-SARSAT system?Not learned 280. Which statement is FALSE regarding the COSPAS-SARSAT system?Not learned 281. What information is transmitted by a 406 MHz EPIRB alert?Not learned 282. Which statement is FALSE regarding the COSPAS-SARSAT system and EPIRB operations?Not learned 283. What actions should the GMDSS radio operator take prior to any potential Distress situation?Not learned 284. What information should be contained in a detailed Distress message that was not transmitted by an initial Distress “hot-key” alert?Not learned 285. Which GMDSS equipment is best suited to simultaneous long-range communications with an RCC/coast station and OSC vessels or SAR aircraft?Not learned 286. Which statement is NOT true regarding an Inmarsat Distress Alert?Not learned 287. What are the best resources for researching and planning equipment setups and updates prior to any potential Distress situation?Not learned 288. Which statement is true regarding Inmarsat “hot-key” Distress Alerts?Not learned 289. Which of the following control selections may result in limited receiving range?Not learned 290. At mid-day, what would be the best choice in attempting to communicate with a shore station 15 miles distant?Not learned 291. Which of the following factors does not normally affect the range of VHF transmissions?Not learned 292. Much longer than normal VHF communications distances are typically caused by:Not learned 293. Describing VHF transmissions as "line of sight" does NOT mean:Not learned 294. The effectiveness of VHF communications is maximized by:Not learned 295. A VHF frequency channel pair of TX 157.200 MHz and RX 161.800 MHz would most likely be:Not learned 296. Which channel is utilized for the required Bridge-to-Bridge watch?Not learned 297. While conducting routine communications using the wheelhouse VHF with a station 1 mile distant, your recommended power setting would be:Not learned 298. The USA-INT control on VHF units:Not learned 299. The USA-INT control on VHF units:Not learned 300. Proper and legal VHF operations require all of these EXCEPT?Not learned 301. How is mutual interference on 518 kHz among NAVTEX stations avoided?Not learned 302. When do NAVTEX broadcasts typically achieve maximum transmitting range?Not learned 303. What should a GMDSS Radio Operator do if a NAVTEX warning message is received but it contains too many errors to be usable?Not learned 304. Which of these cannot happen when a paper model NAVTEX receiver runs out of paper?Not learned 305. Which of the following is the primary frequency that is used exclusively for NAVTEX broadcasts internationally?Not learned 306. What is the transmitting range of most NAVTEX stations?Not learned 307. How is a NAVTEX receiver programmed to reject certain messages?Not learned 308. How can reception of certain NAVTEX broadcasts be prevented?Not learned 309. Which of the following statements is true?Not learned 310. What means are used to prevent the reception of unwanted broadcasts by vessels utilizing the NAVTEX system?Not learned 311. What statement is true regarding the control the operator can exercise over the NAVTEX receiver's operation?Not learned 312. Which messages are mandatory to be received and should not typically be rejected or disabled by the operator of a NAVTEX receiver?Not learned 313. The NAVTEX message header contains the following?Not learned 314. If the Inmarsat-C terminal is inoperative but the vessel remains within NAVTEX coverage -- which of the following message categories should not be disabled by the GMDSS Radio Operator?Not learned 315. How are NAVTEX broadcasts transmitted?Not learned 316. What determines whether a NAVTEX receiver prints a particular type of message content from a programmed NAVTEX station?Not learned 317. Which information determines if a NAVTEX message is to be rejected?Not learned 318. NAVTEX broadcasts are sent:Not learned 319. Where NAVTEX cannot be feasibly established, what system can be implemented to provide an automated service in coastal waters to receive MSI?Not learned 320. What action should a GMDSS Radio Operator take when SafetyNET™ Distress or Urgency messages are received by the vessel's EGC receiver?Not learned 321. What system can provide an automated service in coastal waters where it may not be feasible to establish the NAVTEX service or where shipping density is too low to warrant its implementation?Not learned 322. Aboard ship, SafetyNET™ messages can be received by which equipment/methods?Not learned 323. SafetyNET™ messages can be received by which of the following shipboard equipment?Not learned 324. Maritime Safety Information is promulgated via satellite through which system?Not learned 325. SafetyNET™ promulgates what type of information?Not learned 326. What kind(s) of broadcasts are not available through SafetyNET™?Not learned 327. Which satellite system promulgates Maritime Safety Information?Not learned 328. What information is promulgated by the international SafetyNET™?Not learned 329. To receive all mandatory MSI using the SafetyNET™ system the vessel must:Not learned 330. In using SafetyNET™ for the receipt of MSI (Maritime Safety Information):Not learned 331. Over what system are Enhanced Group Calls transmitted?Not learned 332. How is a MSI (Maritime Safety Information) broadcast received by an Inmarsat-C SES that is engaged in communications?Not learned 333. Which of the following provides a unique automated system capable of addressing messages to pre- determined groups of ships or all vessels in both fixed and variable geographic areas?Not learned 334. What system may be useful for messages, such as local storm warnings or a shore-to-ship Distress alert, for which it is inappropriate to alert all ships in the satellite coverage area?Not learned 335. What services are available through Enhanced Group Calls?Not learned 336. What messages originate from registered information providers anywhere in the world and are broadcast to the appropriate ocean region via a LES?Not learned 337. Which HF SITOR (NBDP) mode would be selected to receive MSI broadcasts from high seas shore stations?Not learned 338. The U.S. Coast Guard communications station providing HF MSI broadcast coverage for NAVAREA IV is:Not learned 339. The U.S. Coast Guard communications station providing HF MSI (Maritime Safety Information) broadcast coverage for NAVAREA XII is:Not learned 340. Frequencies for receiving HF MSI (Maritime Safety Information) are:Not learned 341. Which frequency/mode is authorized for use internationally for Maritime Safety Information transmissions?Not learned 342. How many frequencies are assigned specifically for HF MSI broadcasts?Not learned 343. Which NAVAREA is associated with the western North Atlantic and the Caribbean Sea?Not learned 344. Which sequence is associated with the 5 new Arctic Ocean NAVAREAs?Not learned 345. NAVAREAs referred to in NAVTEX are the same as used in:Not learned 346. A vessel operating in the Western Atlantic or along the East coast of North America and Central America from Canada to Venezuela, including the Caribbean and Panama, would be located in which NAVAREA?Not learned 347. A vessel operating in the Eastern Pacific or along the West coast of North and Central America from Alaska to Ecuador, including Panama and Hawaii, would be operating in which NAVAREA?Not learned 348. A vessel on a voyage between Miami and Los Angeles via the Panama Canal would be operating in which NAVAREAS?Not learned 349. Which of the following actions should be taken once the vessel is berthed and will not leave port again for several weeks?Not learned 350. What action should always be taken before powering down an Inmarsat-C terminal or leaving one satellite footprint for another?Not learned 351. With most Inmarsat-C systems what should the indicator lamps do when powering up?Not learned 352. What is the importance of a successful log in indication, after power-up, on an Inmarsat-C terminal?Not learned 353. On an Inmarsat-C system, what is the importance of a successful “SYNC” indication after power up?Not learned 354. On an Inmarsat-C system an incoming EGC alarm sounds:Not learned 355. Which satellite(s) would most likely be selected for use when the vessel is operating off the eastern shore of the United States?Not learned 356. Which satellite should be chosen when the vessel is operating between Japan and the Bering Sea?Not learned 357. Which longitude corresponds to the AOR-W satellite for Inmarsat-C communications?Not learned 358. Which longitude corresponds to the AOR-E satellite for Inmarsat-C communications?Not learned 359. Which longitude corresponds to the POR's satellite location for Inmarsat-C communications?Not learned 360. Which longitude corresponds to the IOR's satellite location for Inmarsat-C communications?Not learned 361. Which action must be taken to ensure that incoming message traffic of all priority levels will be received through Inmarsat-C?Not learned 362. When logging into the Inmarsat system using Inmarsat-C, it is necessary to:Not learned 363. What action should be taken on changing from one Inmarsat-C ocean region to another?Not learned 364. What is the primary danger of an Inmarsat-C terminal if it is not properly logged out?Not learned 365. Which of these can take place on an Inmarsat-C terminal that has synch with the NCS CC but has not yet performed a successful login?Not learned 366. Which of the following is NOT an example of a failure to log-out properly?Not learned 367. What is the primary function of an NCS?Not learned 368. What is the primary function of a LES?Not learned 369. Messages are transmitted by an Inmarsat LES according to what criteria?Not learned 370. How is maximum communications coverage provided by satellites in the Inmarsat maritime satellite service?Not learned 371. What factors bear on the choice of NCS on an Inmarsat terminal?Not learned 372. What is the purpose of a CODEC?Not learned 373. Iridium satellites are in what sort of orbits?Not learned 374. How are Iridium antennas tracking the satellites?Not learned 375. The Iridium terminal typically displays what status indicators?Not learned 376. How are Iridium calls routed through the satellite system?Not learned 377. Which of the following statements concerning Iridium satellites is true?Not learned 378. What is the primary purpose of an Iridium LES?Not learned 379. How is a signal radiated from an Inmarsat-FBB system's antenna?Not learned 380. Inmarsat FBB coverage is provided by?Not learned 381. How does an FBB terminal notify shore authorities of a Distress situation with priority pre-emption?Not learned 382. What features in a Maritime Safety Terminal (MST) are required for FBB units to meet GMDSS requirements?Not learned 383. How does an FBB terminal fully meet compulsory GMDSS requirements?Not learned 384. When engaging in voice communications via an Inmarsat-FBB terminal, what procedures are used?Not learned 385. Which mode of communications is NOT possible through an Inmarsat-C SES?Not learned 386. What is the average length of time required for a TELEX sent by Inmarsat-C to be delivered to the addressee?Not learned 387. How is a signal radiated from an Inmarsat-C system's antenna?Not learned 388. What statement is true regarding Inmarsat-C?Not learned 389. With an Inmarsat-C LES, how are messages routed to receiving stations?Not learned 390. What are the directional characteristics of the Inmarsat-C SES antenna?Not learned 391. Which of the following best describes Inmarsat-C operation?Not learned 392. Which of the following best describes a shipboard Inmarsat-C system?Not learned 393. How are Inmarsat-C LESs selected by the operator?Not learned 394. Which statement about Inmarsat-C LESs is true?Not learned 395. It is possible to transmit all of the following via Inmarsat-C from a vessel EXCEPT?Not learned 396. Which of the following best describes the full range of services provided by the Inmarsat-C Satellite system?Not learned 397. Which statement concerning Inmarsat-FBB and Inmarsat-C terminals is correct?Not learned 398. When Inmarsat-FBB and Inmarsat-C terminals are compared:Not learned 399. Which statement concerning Inmarsat-FBB and Inmarsat-C terminals is correct?Not learned 400. When Inmarsat-FBB and Inmarsat-C terminals are compared:Not learned 401. Which statement concerning Inmarsat-FBB and Inmarsat-C terminals is correct?Not learned 402. When Inmarsat-FBB and Inmarsat-C terminals are compared:Not learned 403. Which Inmarsat Earth stations would be available for Inmarsat-C traffic if the vessel is off the Pacific Coast of the United States but logged-in to the AOR-W satellite?Not learned 404. Which Inmarsat Earth stations would be available for Inmarsat-C traffic if the vessel is off the Atlantic Coast of the United States and tracking the AOR-E satellite?Not learned 405. Which LES should a GMDSS Radio Operator select to update an Inmarsat-C Distress alert message if the vessel is in the southern Pacific Ocean near the Dateline and logged-in to the POR satellite?Not learned 406. Which Inmarsat Earth stations could a GMDSS Radio Operator select to update an Inmarsat- C Distress alert message if the vessel is in the Mediterranean Sea and logged into the AOR-E satellite?Not learned 407. Which Inmarsat Earth Stations could a vessel utilize for Inmarsat-C traffic if operating off the Atlantic Coast of the United States and tracking the AOR-E satellite?Not learned 408. Which Inmarsat Earth Stations could a vessel utilize for Inmarsat-C traffic if operating on a voyage from Diego Garcia to the Persian Gulf and synched to the IOR satellite?Not learned 409. A vessel is tracking the AOR-W satellite. To initiate an F77 automatic ship-to-shore telephone contact to a shoreside party in the U.S. phone # 123-456-7890, via Southbury Earth Station, a valid Inmarsat operations/dialing sequence is?Not learned 410. A vessel is tracking the AOR-E satellite. To initiate an operator assisted F77 ship-to-shore telephone contact to a shoreside party in the U.S.A., # 202-456-7890, through a European Earth Station, a valid Inmarsat operations/dialing sequence would be?Not learned 411. To request medical assistance from Inmarsat via voice what would be the correct procedure?Not learned 412. Which of the following would be a valid sequence to request an F77 automatically dialed ship-ship voice call to an F77 terminal on a vessel tracking the IOR satellite?Not learned 413. If you are tracking the AOR-W satellite and wish to communicate by F77 voice using LES Southbury with another ship tracking the AOR-E satellite what is the proper procedure?Not learned 414. Which of the following is a correct dialing sequence for a F77 vessel tracking the AOR-W satellite to make a voice call to an Iridium terminal via Yamaguchi (Japan)?Not learned 415. How is a voice call to a shoreside destination typically dialed from an Iridium terminal handset?Not learned 416. What is an advantage of an Iridium terminal for making voice calls?Not learned 417. How would a shoreside party dial an Iridium terminal on a ship?Not learned 418. What entry would you make on an Iridium terminal to make a telephone call to an Inmarsat terminal on another ship that is 300 miles west of San Francisco?Not learned 419. What entry would you make on an Iridium terminal to make a telephone call to another Iridium terminal?Not learned 420. What is an advantage of the Iridium system for placing ship-ship calls?Not learned 421. From an Inmarsat-C terminal, which of the following are correctly formatted address for sending TELEX messages to two Inmarsat-C terminals on vessels in the AOR-W?Not learned 422. Which of the following is a correctly formatted Inmarsat-C address book entry for sending TELEX communications to a vessel in the AOR-E?Not learned 423. Which of the following is a correctly formatted Inmarsat-C address book entry for sending TELEX communications to a vessel in the POR?Not learned 424. Which of the following is a correctly formatted Inmarsat-C address book entry for sending TELEX communications to a vessel in the IOR?Not learned 425. Which of the following is a correctly formatted Inmarsat-C address book entry for sending TELEX communications to an Inmarsat-C terminal in the AOR-W?Not learned 426. Which of the following is a correctly formatted Inmarsat-C address book entry for sending TELEX communications to two Inmarsat-C terminals in the POR?Not learned 427. Which of the following is a correctly formatted Inmarsat-C address book entry for sending communications to a shoreside TELEX terminal number 45992 in Taiwan (TELEX country code 769)?Not learned 428. Which of the following is a correctly formatted Inmarsat-C address book entry for sending communications to a shoreside TELEX terminal number 440122 in the United Kingdom (TELEX country code 51)?Not learned 429. If your vessel is in the POR, which of the following is a correctly formatted Inmarsat-C address book entry for sending communications to a shoreside TELEX terminal number 42267 in Ecuador (TELEX country code 308)?Not learned 430. Which of the following is a correctly formatted Inmarsat-C address book entry for sending communications to a shoreside terminal number 276992 in New Jersey via TRT (TELEX country code 238)?Not learned 431. If your vessel is in the IOR, which of the following is a correctly formatted Inmarsat-C address book entry for sending communications to a shoreside TELEX terminal number 77829 in the Philippines (TELEX country code 758)?Not learned 432. If your vessel is in the AOR-E, which of the following is a correctly formatted Inmarsat-C address book entry for sending communications to a shoreside TELEX terminal number 776424 in Canada via the TWX system (TELEX country code 26)?Not learned 433. Which of the following are correctly formatted Inmarsat-C address book entries for sending communications to an F77 with a fax machine in the AOR-W?Not learned 434. Which of the following is a correctly formatted Inmarsat-C address book entry for sending communications to a fax machine number 516-229-4339 in Long Beach, CA, U.S.?Not learned 435. Which of the following is a correctly formatted Inmarsat-C address book entry for sending communications to a fax machine on a vessel’s F77 terminal in the AOR-E?Not learned 436. Which of the following is a correctly formatted Inmarsat-C address book entry for sending communications to a fax machine number 1424-8821-902 in the United Kingdom (voice country code 44)?Not learned 437. Which of the following is a correctly formatted Inmarsat-C address book entry for sending communications to a fax machine on a vessel’s F77 terminal in the IOR?Not learned 438. Which of the following is a correctly formatted Inmarsat-C address book entry for sending communications to a fax machine number (045) 334-5678 in Japan (voice country code 81)?Not learned 439. How may an Inmarsat-C unit be used to send text communications to an Internet destination?Not learned 440. To send message traffic to an Internet address using an Inmarsat- C terminal -- what action would be required?Not learned 441. What menu function in Inmarsat-C terminals would typically be used to specify an Internet address destination?Not learned 442. Which of the following is NOT correct with regard to Inmarsat-C e-mail?Not learned 443. How would a notification of arrival be sent as a text to a mobile phone number using an Inmarsat-C unit?Not learned 444. How may Inmarsat-C terminals be used for sending Urgency or Safety priority communications (such as synoptic weather reports)?Not learned 445. Which statement is FALSE regarding an Inmarsat Distress request?Not learned 446. How may a Distress Alert be initiated to a specific RCC through Iridium?Not learned 447. How is an Iridium Distress alert routed to the correct RCC?Not learned 448. What is the best way to use Iridium to alert an RCC of a Distress and then follow-up with voice SAR communications?Not learned 449. Why is the correct selection of the LES in the Inmarsat-C Distress Alert Setup menu so crucial?Not learned 450. If an Inmarsat Distress Alert Setup menu contains an incorrect or unavailable LES code what happens to the Distress Alert transmission?Not learned 451. What action would be the swiftest and most certain way to notify a RCC of a Distress situation aboard your vessel?Not learned 452. What information should be sent in a detailed satellite Distress message that was not included in the initial “hot-key” Distress Alert?Not learned 453. What actions should be taken to transmit a detailed satellite Distress message to a RCC handling your vessel’s initial “hot-key” Distress Alert?Not learned 454. What is your vessel’s obligation upon receipt of a Distress priority EGC message requesting that vessels report in response to a SAR situation?Not learned 455. What statement is true regarding LES codes and Inmarsat “hot-key” alert default menus?Not learned 456. Detailed Distress situation report message formats can best be found in?Not learned 457. Upon receipt of SafetyNET™ messages of the Distress or Urgency category on the ship's EGC receiver, what action is required by the GMDSS Radio Operator?Not learned 458. What can be defined as the service that allows terrestrial information providers to send general information messages to pre-defined groups of subscribers?Not learned 459. What additional equipment provides the maximum availability for receiving SafetyNET™ broadcasts when the associated Inmarsat-C SES is engaged in communications?Not learned 460. Which of the following is utilized to transmit Enhanced Group Calls?Not learned 461. What is the equipment arrangement that provides the maximum availability for reception of MSI broadcasts when using Inmarsat-C for TELEX communications?Not learned 462. Which of the following statements concerning EGC configuration is FALSE?Not learned 463. A vessel with an 18-hour ETA to the Panama Canal on a voyage from Miami loses the ability to communicate via Inmarsat-C. The most likely cause is?Not learned 464. A vessel, before transiting the Panama Canal, on a voyage from Hawaii to Florida, loses the ability to communicate via Inmarsat-C. The most likely cause is:Not learned 465. What would cause an FBB antenna to lose constant lock on the satellite?Not learned 466. What maintenance function may the holder of a GMDSS Radio Operator license perform, or supervise the performance of, on an Inmarsat-C SES?Not learned 467. What maintenance function may the holder of a GMDSS Radio Operator license perform, or supervise the performance of, on an Inmarsat-C SES?Not learned 468. Which functions may the holder of a GMDSS Radio Operator License NOT perform on the Inmarsat-C equipment?Not learned 469. What immediate remedy can be used to correct shadowing of the satellite signal by a shipboard obstruction?Not learned 470. A vessel loses Inmarsat-FBB SES operation after a large course change. Which of the following could most likely cause this?Not learned 471. Which statement is correct regarding a method that a vessel experiencing problems with shadowing of an Inmarsat-FBB SES antenna by an on-board obstruction could use to attempt reliable communications?Not learned 472. Which of the following conditions does not typically impair Inmarsat-FBB communications?Not learned 473. A vessel is experiencing problems tracking the satellite in an Inmarsat-C SES while at sea. The problem is least likely caused by?Not learned 474. Which functions may the holder of a GMDSS Radio Operator License not perform on the Inmarsat-C equipment?Not learned 475. Which modes could be selected to receive vessel traffic lists from high seas coast radio stations:Not learned 476. MF/HF Transceiver Power levels should be set:Not learned 477. Which statement regarding GMDSS MF/HF Transceiver frequency set-up is true:Not learned 478. Which statement regarding GMDSS MF/HF Transceiver frequency set-up is true:Not learned 479. To set-up the MF/HF Transceiver for a TELEX call to a coast station, the operator must:Not learned 480. To set-up the MF/HF Transceiver for a voice call to a coast station, the operator must:Not learned 481. How are paired SITOR (NBDP) frequencies normally used?Not learned 482. How are paired SSB frequencies normally used?Not learned 483. For general communications purposes, paired frequencies are:Not learned 484. For general communications purposes, simplex frequencies are:Not learned 485. An ITU simplex channel frequency assignment is defined as:Not learned 486. An ITU duplex channel frequency is defined as:Not learned 487. Which of the following defines "ITU Channel 1216"?Not learned 488. Which of the following is a valid 22-MHz ITU Channel?Not learned 489. What is meant by the term duplex "ITU channel"?Not learned 490. ITU duplex channel 1604 would mean:Not learned 491. What is a potential danger of using the manufacturer’s database to set up for operations using MF-HF ITU frequency assignments?Not learned 492. ITU Duplex channels are:Not learned 493. Which statement regarding bandwidth and channel spacing is correct:Not learned 494. The purpose of ITU channel spacing is:Not learned 495. Which statement regarding channel spacing and bandwidth is true?Not learned 496. The proper sequence of channel spacing from narrow to widest is:Not learned 497. Communications with an emission of F1B/J2B would typically have a channel spacing of:Not learned 498. Communications with an emission of J3E would typically have a channel spacing of:Not learned 499. For RF communications, "modulation" is best defined as:Not learned 500. For RF communications, "bandwidth" is best defined as:Not learned 501. In an AM broadcast signal using voice:Not learned 502. In FM communications, the information is applied to the carrier by:Not learned 503. The proper sequence of emissions corresponding to the sequence AM-Voice DSB, SSB-Voice without carrier, USB-Voice with carrier and FM-Voice, is:Not learned 504. The proper sequence of emissions corresponding to the sequence SSB-Voice without carrier, USB-Voice with carrier, FM-Voice and SITOR (NBDP) TELEX is:Not learned 505. When placing a SSB MF/HF call to a Coast Station, you should always:Not learned 506. How are high seas (HF) radiotelephone communications initially established between a vessel and a public correspondence station?Not learned 507. What is the best procedure for calling another ship station using HF radiotelephone when the signals are weak but readable?Not learned 508. What is the correct procedure for calling a coast radio station using HF radiotelephone?Not learned 509. Through which coast radio station(s) may a U.S.-flag merchant vessel communicate?Not learned 510. What is the best source of information to find changes or additions to the routine communications frequencies of a Commercial Radio Station?Not learned 511. Which of these is not a primary purpose of the MF/HF DSC controller?Not learned 512. A "Distress Hot Key" MF/HF DSC Distress alert:Not learned 513. A Distress Priority DSC call may be formatted and transmitted specifying and requesting:Not learned 514. Which of these statements regarding a multi-frequency MF/HF DSC Distress alert is FALSE?Not learned 515. To make a call to another vessel requesting voice communications regarding important company business, the GMDSS operator should:Not learned 516. To make a call to another vessel requesting TELEX communications regarding important company business, the GMDSS operator should:Not learned 517. What is meant by describing a Coast Station with the acronym ATOR?Not learned 518. Which of the following acronyms refers to a communications system that does not use ARQ and/or FEC modes?Not learned 519. What does the term FEC mean in SITOR (NBDP) communications?Not learned 520. A Coast Station that is described as ATOR typically provides what type of services?Not learned 521. The acronym SITOR (NBDP) stands for:Not learned 522. What does the term "ARQ" mean in SITOR (NBDP) operations?Not learned 523. Which of the following statements concerning SITOR (NBDP) communications is true?Not learned 524. Which of the following statements concerning SITOR (NBDP) communications is true?Not learned 525. Which statement best defines the SITOR (NBDP) acronym "ARQ"?Not learned 526. Which statement best defines the SITOR (NBDP) acronym "BFEC"?Not learned 527. The purpose of "parity" in SITOR (NBDP) communications is?Not learned 528. "SITOR (NBDP)" communications are based on a digital code system:Not learned 529. Which of the following would be a valid SELCAL for use in ARQ communications?Not learned 530. Once ARQ communication with the coast radio station has been established, which of the following events will most likely take place?Not learned 531. Which of the following methods will give a GMDSS Radio Operator the best indication of whether ARQ communication can be established with a coast radio station?Not learned 532. When placing a TELEX call to a Coast Station, you should always:Not learned 533. What is the best method for a GMDSS Radio Operator to determine which SITOR (NBDP) station to contact for the purpose of sending a chargeable message or cable?Not learned 534. Which statement is correct regarding HF SITOR (NBDP) under GMDSS?Not learned 535. Which of the following events will take place immediately after phasing with a Coast Station on an available channel?Not learned 536. During SITOR (NBDP) ARQ operations through a coast station, what should the GMDSS operator do during the "Automatic Exchange of Answerbacks"?Not learned 537. Assuming sending a direct TELEX message to a shore-based office, which sequence of events best describes a complete ARQ TELEX exchange with a coast station?Not learned 538. For ARQ communications with a Public Correspondence Coast Station, which sequence of events best describes reaching the point in time where the text of TELEX communications should be sent.Not learned 539. During ARQ communications, which of these is least likely to cause a coast station to immediately break the phased radio connection:Not learned 540. During ARQ communications, which of these is least likely to cause a coast station to break the phased radio connection:Not learned 541. What sequence of ARQ codes matches the following: manual over, end of message text, end of connection to land destination terminal?Not learned 542. What sequence of ARQ codes matches the following: request establishment of a landline, end radio link after traffic is done, request connection for AMVER messages?Not learned 543. What sequence of ARQ codes matches the following: Send synoptic weather, switch control from a station currently transmitting over to the receiving station, terminate phasing with coast station.Not learned 544. A manual ship-ship ARQ message would typically begin with what sequence of ARQ procedures?Not learned 545. What sequence of ARQ codes matches the following: shore station indicates it is awaiting instructions from the vessel, vessel requests a live connection to a land telex number, vessel indicates it is done with the coast station?Not learned 546. All country codes which are transmitted by MF/HF SITOR (NBDP) are preceded by which character(s)?Not learned 547. Which of the following statements concerning SITOR (NBDP) communications is true?Not learned 548. What statement is true regarding the exchange between two parties engaged in SITOR (NBDP) communications?Not learned 549. Of the following, which is true of SITOR (NBDP) ARQ mode?Not learned 550. Which of the following is true of SITOR (NBDP) ARQ mode?Not learned 551. In ARQ, when the information sending station (ISS) receives a signal that the parity check failed what happens?Not learned 552. Which of the following is true of SITOR (NBDP) ARQ mode:Not learned 553. Which of the following keystrokes or characters is sent as part of ARQ communications to request a direct TELEX call to a shore-based location?Not learned 554. The DIRTLX command should be given to a coast station at what point in time?Not learned 555. Which automatic TELEX command should be sent by a ship station during SITOR (NBDP) operations to properly address a weather report to the national weather authority?Not learned 556. Which of the following would be a valid automatic TELEX code and number for a request for a real-time TELEX connection to a shore-based TELEX terminal?Not learned 557. When requesting a direct TELEX connection to a shore-based TELEX terminal the GMDSS operator must:Not learned 558. To correctly address a SITOR (NBDP) message and transmit it "live" to a shore-based office the GMDSS operator would dial which sequence:Not learned 559. Which of the following statements concerning SITOR (NBDP) communications is true?Not learned 560. Which of the following is true of SITOR (NBDP) in FEC mode, in the presence of static crashes.Not learned 561. Which of the following statements concerning SITOR (NBDP) communications is true?Not learned 562. The sequence ARQ, FEC, SFEC best corresponds to which of the following sequences?Not learned 563. The sequence BFEC, SFEC, ARQ best corresponds to which of the following sequences?Not learned 564. Selective FEC communications (SFEC) are employed when:Not learned 565. If the vessel is within range of NAVTEX broadcasts and both the Inmarsat-C and the NAVTEX receiver are inoperative the GMDSS operator should:Not learned 566. If the vessel is beyond range of NAVTEX broadcasts and the Inmarsat-C system fails, the GMDSS operator must:Not learned 567. If the vessel is experiencing atmospheric interference with NAVTEX broadcasts, especially in the tropics, the GMDSS operator should:Not learned 568. Why must the GMDSS operator be able to set-up FEC & ARQ modes and differentiate between them?Not learned 569. BFEC SITOR (NBDP) transmissions might be used to?Not learned 570. FEC SITOR (NBDP) transmissions are normally used to?Not learned 571. The "short rules" of propagation necessary to select the appropriate frequency band are:Not learned 572. GMDSS operators should learn which of the following propagation "rules of thumb"?Not learned 573. What would be the most appropriate HF bands for communicating from San Francisco to Taiwan or the Philippines?Not learned 574. GMDSS operators should routinely focus on the factors affecting propagation in what priority?Not learned 575. Which statement concerning frequency band selection and propagation most corresponds with standard practice.Not learned 576. To ensure effective HF communications, GMDSS operators should:Not learned 577. A ship has been communicating effectively on 16 MHz during daylight hours with a shore station at a distance of 3200 miles. Toward late afternoon and evening what effect would be noticed?Not learned 578. A ship at anchor has been communicating with a shore station approximately 350 miles distant on a frequency in the 4 MHz band through early afternoon. Toward the late afternoon and evening, what effect should be noticed?Not learned 579. At mid-day in the summer, what would be the best choice in attempting to communicate, using J3E voice with a shore station some 1800 miles distant?Not learned 580. At mid-night, what would be the best choice in attempting to communicate, using SITOR (NBDP) with a shore station some 800 miles distant?Not learned 581. At mid-day, what would be the best choice in attempting to communicate with a shore station some 75 miles distant?Not learned 582. How can a GMDSS operator determine the best frequency band to choose for a SITOR (NBDP) transmission to a shore station?Not learned 583. The Distress Alarm sounds and the screen readout no longer contains the particulars of the Distress:Not learned 584. A DSC Distress alert is received by your vessel and your transceiver frequency display reads: Transmit = 4207.5 kHz and Receive = 4207.5 kHz with J3E emission -- what information can you infer from this?Not learned 585. What are potential dangers of automatic transceiver switching in response to a DSC call?Not learned 586. Which of these would not be a bad outcome of an Urgency DSC call to all vessels specifying an alternate TELEX frequency & emission that cause your transceiver to automatically switch?Not learned 587. An incoming Distress priority 16 MHz DSC call requesting J3E emission might automatically switch to what frequency?Not learned 588. An incoming DSC Distress alert on 8414.5 kHz will have what result?Not learned 589. What is the normal voltage of a fully charged single lead acid battery cell?Not learned 590. What is the normal specific gravity of a fully charged lead acid battery cell? What device is used to measuring the electrolyte of a lead acid battery?Not learned 591. What is a gel cell battery and how is it maintained & cared for?Not learned 592. What will cause an individual battery cell to reverse polarity.Not learned 593. What is the effect of temperature on the specific gravity of lead acid batteries?Not learned 594. What would be an indication of a malfunction on a GMDSS station with a 24 VDC battery system?Not learned 595. Which of the following conditions would be a symptom of malfunction in a 2182 kHz radiotelephone system which must be reported to the Master?Not learned 596. Which would indicate a malfunction in a 2182 kHz radiotelephone system?Not learned 597. Which would indicate proper operation of a SSB transmitter rated at 60 Watt PEP output in J3E mode?Not learned 598. Which would be an indication of proper operation of a SSB transmitter rated at 60 watt PEP output?Not learned 599. Your antenna coupler/tuner becomes totally inoperative. What would you do to obtain operation on 2 HF bands?Not learned 600. Your MF-HF whip antenna breaks off and is carried away in a storm. What would you do to regain operation on MF-HF frequencies?Not learned