PHYS: Sending Signals

Question 1

What wave is a phone signal and where are they sent?

Answer 1

Mobile phone signals are MICROWAVES and signals are sent to a MAST then to a RECEIVER

Question 2

How do we transmit signals over long distances?

Answer 2

1. Using satellites (microwaves)

2. Along cables/optic fibres (Infra-red)

Question 3

Advantages to using satellites

Answer 3

They’re easy to get signal from as they are everywhere
Can be easily extended for others to use
Have a cost adv. in rural areas

Question 4

Disadvantages to Satellites

Answer 4

A non direct route for information sent (time delays)
Expensive to build and launch
Effected by the weather

Question 5

Advantages to cables

Answer 5

Nothing gets in the way
Have a direct route for sending signals
Clearer signals as glass becomes more and more pure