Broadcasting systems

Amplitude
-Refers to height of the signal,
a distance from rest to crest.

WaveLength
- Its period is measured between two successive wave crest,
or 2 successive troughts

Frequency
-Is the number of complete waves per unit of time.

Period
- Time taken to complete one wave cycle.

Electromagnetic waves:
1. Radio waves
2. Microwaves
3. Infrared waves
4. Visible light
5. Ultraviolet-waves
6. X-rays
7. Gamma-rays

Sound wave is a analogue waves

Amplitude determines the intensity of sound waves

Frequency determines high or low pitch of the sound waves

Cable television

Analogue Television

3 Types of Colour Transmission Standards

PAL ( Phase Alternating Line )
Countries like:
etc. Australia, China, India, New Zealand

NTSC ( National Television System Committee )
Counteries like:
etc. North America, South Korea, Taiwan, Japan

SECAM ( Sequential Couleur avec Memoire )
Countries like:
etc. Syria, Benin.

Digital Television

3 Types of digital Terrestrial Television Standards

ATSC ( Advanced Television Systems Committee )

DVB ( Digital Video Broadcasting )

ISDB-T (Integrated Services Digital )

Digital Satellite Broadcasting

Internet

2 Types of Radio

Analogue radio

1. AM (Amplitude Modulation)

2. FM ( Frequency Modulation

E.g Class95FM, 98.7FM, Gold90.5FM

Digital Radio

1. IBOC ( In- Band-On-Channel )

2. DAB ( Digital Audio Broadcasting )

3. ISDB-TSB ( Intergated Services Digital Broadcasting - Terrestrial Sound Broadcasting )

4. DRM ( Digital Radio Mondiale )