Podcast
Questions and Answers
What was the frequency separation between the forward and reverse channels in the US AMPS standard and European GSM cellular standard?
What was the frequency separation between the forward and reverse channels in the US AMPS standard and European GSM cellular standard?
- 45 MHz (correct)
- 30 MHz
- 60 MHz
- 20 MHz
During the 1980s, why was it almost impossible to roam in Europe?
During the 1980s, why was it almost impossible to roam in Europe?
- Europe had no pan-European digital mobile service at that time (correct)
- Europe had a complex analog cellular system
- Europe had strict roaming regulations
- Europe had limited mobile phone coverage
What type of communication do cellular mobile communication systems provide?
What type of communication do cellular mobile communication systems provide?
- Simplex communication
- Full-duplex communication (correct)
- Multiplex communication
- Half-duplex communication
How many channels were used by the first modern cellular telephone systems in the early 1980s?
How many channels were used by the first modern cellular telephone systems in the early 1980s?
What was the basis of the US cellular system in the 1980s?
What was the basis of the US cellular system in the 1980s?
What was the frequency separation between the forward and reverse channels in the US AMPS standard and European GSM cellular standard?
What was the frequency separation between the forward and reverse channels in the US AMPS standard and European GSM cellular standard?
In the early 1980s, what was the basis of the US cellular system?
In the early 1980s, what was the basis of the US cellular system?
What type of communication do cellular mobile communication systems provide?
What type of communication do cellular mobile communication systems provide?
When did the single pan-European digital mobile service with advanced features and easy roaming start operating?
When did the single pan-European digital mobile service with advanced features and easy roaming start operating?
How many channels were used by the first modern cellular telephone systems in the early 1980s?
How many channels were used by the first modern cellular telephone systems in the early 1980s?
