CCIR System K

CCIR System K is an analog broadcast television system used in countries that adopted CCIR System D on VHF, and in Benin, Guinea, Republic of the Congo, Togo, Senegal, Burkina Faso, Burundi, Ivory Coast, Gabon, Comoros, Democratic Republic of the Congo, Madagascar, Mali, Nigeria, Réunion, Rwanda, Chad, Central African Republic, French Polynesia, New Caledonia, Wallis and Futuna, Guadeloupe, Martinique, Saint Pierre and Miquelon and French Guiana.

It is identical System D in most respects. Used only for UHF frequencies, its paired with SECAM or PAL color systems.

Specifications
Some of the important specs are listed below.
 * Frame rate: 25 Hz
 * Interlace: 2/1
 * Field rate: 50 Hz
 * Lines/frame: 625
 * Line rate: 15625 Hz
 * Visual bandwidth: 6 MHz
 * Vision modulation: Negative
 * Preemphasis: 50 μs
 * Sound modulation: FM
 * Sound offset: +6.5 MHz
 * Channel bandwidth: 8 MHz

Television channels were arranged as follows:

System K1
French overseas departments and territories used a variation named System K1 for broadcast in VHF. UHF channels were similar to K.