Problem
1. You are walking down the street, and your cell phone rings. What was the sequence of events that allowed a person with a conventional telephone to call you on your cell phone?
2. Which wireless technologies can transmit through solid objects? Which wireless technologies cannot?
3. You are talking on your cell phone as you pass from one cell to another. Will your cell phone use the same set of frequencies in the new cell as it was using in the previous cell? Explain.
4. Why do cell phone systems need only seven sets of frequencies in a metropolitan area?