Podcast
Questions and Answers
When was the first wireline telephone system introduced?
When was the first wireline telephone system introduced?
- 1960s
- 1934
- 1946
- 1877 (correct)
What was the main reason for the lack of market penetration for mobile telephones in 1946?
What was the main reason for the lack of market penetration for mobile telephones in 1946?
- Poor sound quality
- Limited coverage area
- Lack of consumer interest
- High costs and technological drawbacks (correct)
True or false:The first mobile communication systems were based on Frequency Modulation (FM) schemes.
True or false:The first mobile communication systems were based on Frequency Modulation (FM) schemes.
False (B)
What was the main reason for the lack of market penetration of the mobile telephone introduced in 1946?
What was the main reason for the lack of market penetration of the mobile telephone introduced in 1946?
What type of communication allows communication in only one direction?
What type of communication allows communication in only one direction?
True or false: The mobile telephone was introduced in the year 1946 and immediately gained widespread market penetration.
True or false: The mobile telephone was introduced in the year 1946 and immediately gained widespread market penetration.
True or false: The cellular concept was developed in the 1970s at the Bell Laboratories.
True or false: The cellular concept was developed in the 1970s at the Bell Laboratories.
What was the significance of the cellular concept introduced by Bell Laboratories in the 1960s?
What was the significance of the cellular concept introduced by Bell Laboratories in the 1960s?
Who developed the Frequency Modulation (FM) technique that led to the introduction of the mobile telephone in 1946?
Who developed the Frequency Modulation (FM) technique that led to the introduction of the mobile telephone in 1946?
Which transmission type allows for simultaneous radio transmission and reception between a subscriber and a base station?
Which transmission type allows for simultaneous radio transmission and reception between a subscriber and a base station?
Which transmission format is exclusively used in analog mobile radio systems?
Which transmission format is exclusively used in analog mobile radio systems?
Who developed the FM technique that brought about many new changes in mobile radio communication systems?
Who developed the FM technique that brought about many new changes in mobile radio communication systems?
What type of communication allows for two-way communication using the same radio channel for both transmission and reception?
What type of communication allows for two-way communication using the same radio channel for both transmission and reception?
Study Notes
- Mobile communication systems were first based on AM schemes and only certain organizations maintained such systems.
- Mobile radio communication systems began to witness many new changes with the development of FM technique by Edwin Armstrong.
- Mobile telephone was introduced in 1946 but found less market penetration due to high costs and technological drawbacks.
- Cellular concept in the 1960s at Bell Laboratories made mobile communications a promising field.
- Mobile radio transmission systems may be classified as simplex, half-duplex or full-duplex.
- Simplex systems allow communication in only one direction.
- Half-duplex systems allow two-way communication using the same radio channel for both transmission and reception.
- Full duplex systems allow simultaneous radio transmission and reception between a subscriber and a base station.
- FDD is used exclusively in analog mobile radio systems, while TDD is only possible with digital transmission formats and digital modulation.
- Transmission types include unicast, broadcast, and multicast.
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Description
Test your knowledge of mobile communication systems with this informative quiz! From the early days of AM schemes to the modern cellular concept, this quiz covers the history and technical details of mobile radio transmission systems. Learn about simplex, half-duplex, and full-duplex systems, as well as transmission types like unicast, broadcast, and multicast. Whether you're a tech enthusiast or just curious about the evolution of mobile communication, this quiz has something for you.
