More cards in this set

What wavelengths do radiowaves used for TV and FM radio use?

What carries information along optical fibres and why?

How do optical fibres work?

How is a signal created?

What is an analogue signal?

What is a digital signal?

How can sound and images be transmitted?

In digital transmission what is the digital code made up from?

How can digitally coded information be carried?

What happens when the waves are received?