analog television systems

A television set that works in the United States won't receive programs in Europe. 

A video cassette that plays in a VHS player in Germany won't play in a VHS player in the United States. 

Three main analog TV systems have arisen: NTSC, PAL and SECAM. All had an interlace of 2:1 and an aspect ratio of 4:3, otherwise they differ.

United States
Lines per frame 525 625 625
Frames per second 30 25 25

CCIR Report 624-2, in vol. XI of the XVth Plenary Assembly of the CCIR (Geneva 1982) by ITU

See the following pages for the analog systems in use in various nations.

Africa Asia
Central America and the Caribbean Middle East
North America Pacific
South America

For technical details and citations of the various national standards, see Chapter 21 of

K. Blair Benson, editor.
Television Engineering Handbook.
New York: McGraw-Hill, 1986.

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