Login or Register for FREE!
Login or Register for FREE!
Subel. P
6 questions
Subelement P

Satellite

Section 97

INMARSAT Communications Systems-2

What is the best description for the INMARSAT-C system?

  • It provides slow speed telex and voice service.
  • Correct Answer
    It is a store-and-forward system that provides routine and distress communications.
  • It is a real-time telex system.
  • It provides world-wide coverage.

What is the best description for the INMARSAT-C system?

It is a store-and-forward system that provides routine and distress communications.

The INMARSAT-C uses MES (Mobile Earth Stations) and LES (Land Earth Stations) to provide both ways of data transmissions.

For more info, please see Wikipedia's article Inmarsat-C

Also, see communicating using Inmarsat-C from the Inmarsat site.

Last edited by markadlerdallas. Register to edit

Tags: none

The INMARSAT mini-M system is a:

  • Marine SONAR system.
  • Marine global satellite system.
  • Marine depth finder.
  • Correct Answer
    Satellite system utilizing spot beams to provide for small craft communications.

The INMARSAT mini-M system is a:

Satellite system utilizing spot beams to provide for small craft communications.

Small crafts use INMARSAT mini-M systems for data, fax, and voice transmissions. The antenna is small enough for the smaller boats.

See ManualZZ site for article on Inmarsat Mini-M Technical Specs - Explorer Satellite Communications

For example of a unit, please see Satellite Telecom Catalog for Inmarsat Mini-M and

Furuno site unit at Inmarsat MINI-C Mobile Earth Station Model FELCOM19

And, see Wikipedia's article on Inmarsat

Last edited by markadlerdallas. Register to edit

Tags: none

What statement best describes the INMARSAT-B services?

  • Correct Answer
    Voice at 16 kbps, Fax at 14.4 kbps and high-speed Data at 64/54.
  • Store and forward high speed data at 36/48 kbps.
  • Voice at 3 kHz, Fax at 9.6 kbps and Data at 4.8 kbps.
  • Service is available only in areas served by highly directional spot beam antennas.

What statement best describes the INMARSAT-B services?

  • Voice at 16 kbps,
  • Fax at 14.4 kbps and
  • high-speed Data at 64/54.

For more info, please see TelecomABC site for article on Inmarsat

And see Rice site, for article on Inmarsat Marine Communication Products

Please see Wikipedia's article on Inmarsat

Last edited by markadlerdallas. Register to edit

Tags: none

Which INMARSAT systems offer High Speed Data at 64/54 kbps?

  • C.
  • B and C.
  • Mini-M.
  • Correct Answer
    B, M4 and Fleet.

Which INMARSAT systems offer High Speed Data at 64/54 kbps?

B, M4 and Fleet.

For INMARSAT Fleet see INMARSAT Fleet Connect

For INMARSAT M4 see the Oil and Gas Online site for the article on Inmarsat M4 Wide Area Network (WAN)

For INMARSAT B see the FurunoUSA site for the pdf document titled Inmarsat-B MOBILE EARTH STATION

For more info, please see TelecomABC site for article on Inmarsat

And see Rice site, for article on Inmarsat Marine Communication Products

Please see Wikipedia's article on Inmarsat

Last edited by markadlerdallas. Register to edit

Tags: none

When INMARSAT-B and INMARSAT-C terminals are compared:

  • Correct Answer
    INMARSAT-C antennas are small and omni-directional, while INMARSAT-B antennas are larger and directional.
  • INMARSAT-B antennas are bulkier but omni-directional, while INMARSAT-C antennas are smaller and parabolic, for aiming at the satellite.
  • INMARSAT-B antennas are parabolic and smaller for higher gain, while INMARSAT-C antennas are larger but omni-directional.
  • INMARSAT-C antennas are smaller but omni-directional, while INMARSAT-B antennas are parabolic for lower gain.

When INMARSAT-B and INMARSAT-C terminals are compared:

INMARSAT-C antennas are small and omni-directional, while INMARSAT-B antennas are larger and directional.

The inmarsat-C antennas are relatively small, passive stationary non-parabolic antennas, used for lower-speed data transfers.

The Inmarsat-B antennas use a stationary large dish antenna, with position calibrated to be in line-of-sight of a satellite. This service offers data/fax transmissions as well as voice communications.

For more information, please see Wikipedia's articles on Inmarsat and Inmarsat-C.

Last edited by markadlerdallas. Register to edit

Tags: none

What services are provided by the INMARSAT-M service?

  • Data and Fax at 4.8 kbps plus e-mail.
  • Voice at 3 kHz, Fax at 9.6 kbps and Data at 4.8 kbps.
  • Correct Answer
    Voice at 6.2 kbps, Data at 2.4 kbps, Fax at 2.4 kbps and e-mail.
  • Data at 4.8 kbps and Fax at 9.6 kbps plus e-mail.

What services are provided by the INMARSAT-M service?

- Voice at 6.2 kbps,  
- Data at 2.4 kbps,
- Fax at 2.4 kbps and
- e-mail.

The current services include:

  • Voice at Voice at 3 kHz and 6.2 kbps
  • Data at 4.8 kbps and 2.4 kbps
  • Fax at 9.6 kbps and 2.4 kbps
  • Email

For more info, please see TelecomABC site for article on Inmarsat

And see Rice site, for article on Inmarsat Marine Communication Products

Please see Wikipedia's article on Inmarsat

Last edited by markadlerdallas. Register to edit

Tags: none

Go to 96 Go to 98
HamStudy.org™ is copyright 2024 Signal Stuff™, All rights reserved.
View Privacy Policy    |    Get help with HamStudy.org™