CCIR System E

Some of the important specs are listed below:[3]^[1][2]

• Frame rate: 25 Hz
• Interlace: 2/1
• Field rate: 50 Hz
• Lines/frame
  : 819
• Line rate: 20475 Hz
• Visual bandwidth: 10 MHz
• Vision modulation: Positive
• Preemphasis: none
• Sound modulation: AM
• Sound offset: +11.15 MHz on odd numbered channels, -11.15 MHz on even numbered channels
• Channel bandwidth
  : 14 MHz

System E implementation provided very good (near

The final 819-line transmissions in Metropolitan France took place in Paris, from the Eiffel Tower, on 19 July 1983. TMC in Monaco were the last broadcasters to transmit 819-line television, closing down their System E transmitter in 1985.

Television channels were arranged as follows:^[2]

System F

CCIR System F was an adaptation of System E used in Belgium (1953, RTB) and Luxembourg (1955, Télé Luxembourg). With only half the vision bandwidth and approximately half the sound carrier offset, it allowed French 819-line programming to squeeze into the 7 MHz VHF broadcast channels used in those neighboring countries, albeit with a substantial loss of horizontal resolution.^[1] Use of System F was discontinued in Belgium in February 1968, and in Luxembourg in September 1971.

Some of the important specs are listed below:^[1]

• Frame rate: 25 Hz
• Interlace: 2/1
• Field rate: 50 Hz
• Lines/frame
  : 819
• Line rate: 20475 Hz
• Visual bandwidth: 5 MHz
• Vision modulation: Positive
• Preemphasis: 50 μs
• Sound modulation: AM
• Sound offset: +5.5 MHz
• Channel bandwidth
  : 7 MHz

See also

• Broadcast television systems
• Television transmitter
• Transposer

Notes and references

External links

• World Analogue Television Standards and Waveforms
• Fernsehnormen aller Staaten und Gebiete der Welt^{[permanent dead link]}