Subelement P: Satellite— Topic 96: INMARSAT Communications Systems-1
Question 3-96P2
Element 3 (GROL)Which of the following describes the INMARSAT Satellite system?
Explanation
The INMARSAT (International Mobile Satellite Organization) system utilizes geostationary satellites positioned above the equator to provide global mobile satellite communications. Each satellite is strategically placed to cover a specific ocean region.
Option C correctly lists the approximate historical and commonly tested orbital positions for these regions:
* **AOR-E (Atlantic Ocean Region-East)**: 15.5° W
* **AOR-W (Atlantic Ocean Region-West)**: 54° W
* **POR (Pacific Ocean Region)**: 178° E
* **IOR (Indian Ocean Region)**: 64.5° E
These specific longitudes ensure continuous, reliable coverage over their designated areas. Options A, B, and D present incorrect longitudes or an incorrect naming convention for one or more of these established satellite positions. Knowing these approximate geostationary locations is a fundamental aspect of understanding global satellite communication systems like INMARSAT for amateur radio operators.
Related Questions
3-95P6 How does the COSPAS-SARSAT satellite system determine the position of a ship in distress?3-96P1 What is the orbital altitude of INMARSAT Satellites?3-96P3 What are the directional characteristics of the INMARSAT-C SES antenna?3-96P4 When engaging in voice communications via an INMARSAT-B terminal, what techniques are used?3-96P5 Which of the following statements concerning INMARSAT geostationary satellites is true?