CCIR System K
CCIR System K is an analog broadcast television system used in countries that adopted CCIR System D on VHF, and identical to it in most respects.[1][2] Used only for UHF frequencies, its paired with SECAM or PAL color systems.
Specifications
Some of the important specs are listed below.[3][1][4]
| Frame rate | Interlace | Field rate | Line/frame | Line rate | Visual b/w | Vision mod. | Preemphasis | Sound mod. | Sound offset | Channel b/w |
|---|---|---|---|---|---|---|---|---|---|---|
| 25 | 2/1 | 50 | 625 | 15625 | 6 MHz. | Neg. | 50 μs | FM | +6.5 MHz. | 8 MHz. |
Television channels were arranged as follows:[2]
| Channel | Video carrier (MHz) | Audio carrier (MHz) |
|---|---|---|
| 21 | 471.25 | 477.75 |
| 22 | 479.25 | 485.75 |
| 23 | 487.25 | 493.75 |
| 24 | 495.25 | 501.75 |
| 25 | 503.25 | 509.75 |
| 26 | 511.25 | 517.75 |
| 27 | 519.25 | 525.75 |
| 28 | 527.25 | 533.75 |
| 29 | 535.25 | 541.75 |
| 30 | 543.25 | 549.75 |
| 31 | 551.25 | 557.75 |
| 32 | 559.25 | 565.75 |
| 33 | 567.25 | 573.75 |
| 34 | 575.25 | 581.75 |
| 35 | 583.25 | 589.75 |
| 36 | 591.25 | 597.75 |
| 37 | 599.25 | 605.75 |
| 38 | 607.25 | 613.75 |
| 39 | 615.25 | 621.75 |
| 40 | 623.25 | 629.75 |
| 41 | 631.25 | 637.75 |
| 42 | 639.25 | 645.75 |
| 43 | 647.25 | 653.75 |
| 44 | 655.25 | 661.75 |
| 45 | 663.25 | 669.75 |
| 46 | 671.25 | 677.75 |
| 47 | 679.25 | 685.75 |
| 48 | 687.25 | 693.75 |
| 49 | 695.25 | 701.75 |
| 50 | 703.25 | 709.75 |
| 51 | 711.25 | 717.75 |
| 52 | 719.25 | 725.75 |
| 53 | 727.25 | 733.75 |
| 54 | 735.25 | 741.75 |
| 55 | 743.25 | 749.75 |
| 56 | 751.25 | 757.75 |
| 57 | 759.25 | 765.75 |
| 58 | 767.25 | 773.75 |
| 59 | 775.25 | 781.75 |
| 60 | 783.25 | 789.75 |
| 61 | 791.25 | 797.75 |
| 62 | 799.25 | 805.75 |
| 63 | 807.25 | 813.75 |
| 64 | 815.25 | 821.75 |
| 65 | 823.25 | 829.75 |
| 66 | 831.25 | 837.75 |
| 67 | 839.25 | 845.75 |
| 68 | 847.25 | 853.75 |
| 69 | 855.25 | 861.75 |
System K1
Plan showing VHF frequency ranges for ITU Systems
French overseas departments and territories used a variation named System K1 for broadcast in VHF.[5] UHF channels were similar to K.[2]
| Channel | Video carrier (MHz) | Audio carrier (MHz) |
|---|---|---|
| 2 | 52.25 | 58.75 |
| 3 | 60.25 | 66.75 |
| 4 | 175.25 | 181.75 |
| 5 | 183.25 | 189.75 |
| 6 | 191.25 | 197.75 |
| 7 | 199.25 | 205.75 |
| 8 | 207.25 | 213.75 |
| 9 | 215.25 | 221.75 |
| 10 | 223.25 | 229.75 |
Notes and references
- https://www.itu.int/dms_pub/itu-r/opb/rep/R-REP-BT.624-4-1990-PDF-E.pdf
- "World Analogue Television Standards and Waveforms". www.pembers.freeserve.co.uk. Archived from the original on 30 August 2012. Retrieved 12 January 2022.
- Reference Data for Radio Engineers, ITT Howard W.Sams Co., New York, 1977, section 30
- "World Analogue Television Standards and Waveforms". 2007-05-15. Archived from the original on 2007-05-15. Retrieved 2023-04-13.
- "World Analogue Television Standards and Waveforms". www.pembers.freeserve.co.uk. Archived from the original on 30 August 2012. Retrieved 12 January 2022.
External links
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