TV channel frequency band division: VHF frequency band: L segment, 1-5 channels, called â… band; H segment, 6-12 channels, called â…¢ band; UHF frequency band: 13-68 channels. Among them, the frequency bands between channels 5-6 and 12-13 are supplementary frequency bands, which are A-band and B-band, respectively Band Channel Frequency Range Image carrier frequency Sound carrier frequency Local oscillation I band (meter wave) DS—1 2 3 48.6 ～ 56.5 56.5 ～ 64.5 64.5 ～ 72.5 49.75 57.75 65.75 56.25 64.25 72.25 86.75 94.75 102.75 Band II (meter wave) 4 5 76 ～ 84 84 ～ 92 77.25 85.25 83.75 91.75 114.25 122.25 Band III (meter wave) 6 7 8 9 10 11 12 167 ～ 175 175 ～ 183 183 ～ 191 191 ～ 199 199 ～ 207 207 ～ 215 215 ～ 223 168.25 176.25 184.25 192.25 200.25 208.25 216.25 174.75 182.75 190.75 198.75 206.75 214.75 222.75 205.25 213.25 221.25 229.25 237.25 245.25 253.25 IV band (decimeter wave) DS —13 14 15 16 17 18 19 20 twenty one twenty two twenty three twenty four 470 ～ 478 478 ～ 486 486 ～ 494 494 ～ 502 502 ～ 510 510 ～ 518 518 ～ 526 526 ～ 534 534 ～ 542 542 ～ 550 550 ～ 558 558 ～ 566 471.25 479.25 487.25 495.25 503.25 511.25 519.25 527.25 525.25 543.25 551.25 559.25 477.75 485.75 493.75 501.75 509.75 517.75 525.75 533.75 541.75 549.75 557.75 565.75 508.25 516.25 524.25 532.25 540.25 548.25 556.25 564.25 572.25 580.25 588.25 596.25 V band (decimeter wave) 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 606 ～ 614 614 ～ 622 622 ～ 631 631 ～ 638 638 ～ 646 646 ～ 654 654 ～ 662 662 ～ 670 670 ～ 678 678 ～ 686 686 ～ 694 694 ～ 702 702 ～ 710 710 ～ 718 718 ～ 726 726 ～ 734 734 ～ 742 742 ～ 750 607.25 615.25 623.25 631.25 639.25 647.25 655.25 663.25 671.25 679.25 687.25 695.25 703.25 711.25 719.25 727.25 735.25 743.25 613.75 621.75 629.75 637.75 645.75 653.75 661.75 669.75 677.5 685.75 693.75 701.75 709.75 717.75 725.75 733.75 741.75 749.75 644.25 652.25 660.25 668.25 676.25 684.25 692.25 700.25 708.25 716.25 724.25 732.25 740.25 748.25 756.25 764.25 772.25 780.25 V band (decimeter wave) DS—43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 750 ～ 758 758 ～ 766 766 ～ 774 774 ～ 782 782 ～ 790 790 ～ 798 798 ～ 806 806 ～ 814 814 ～ 822 822 ～ 830 830 ～ 838 838 ～ 846 846 ～ 854 854 ～ 862 862 ～ 870 870 ～ 878 878 ～ 886 886 ～ 894 894 ～ 902 902 ～ 910 910 ～ 918 918 ～ 926 926 ～ 934 934 ～ 942 942 ～ 950 950 ～ 958 751.25 759.25 767.25 775.25 783.25 791.25 799.25 807.25 715.25 823.25 831.25 839.25 847.25 855.25 863.25 871.25 879.25 887.25 895.25 903.25 911.25 919.25 927.25 935.25 943.25 951.25 757.75 765.75 773.75 781.75 789.75 797.75 805.75 813.75 821.75 829.75 837.75 845.75 853.75 861.75 869.75 877.75 885.75 893.75 901.75 909.75 917.75 925.75 933.75 941.75 949.75 957.75 788.25 796.25 804.25 812.25 820.25 828.25 836.25 844.25 852.25 860.25 868.25 876.25 884.25 892.25 900.25 908.25 916.25 924.25 932.25 940.25 948.25 956.25 964.25 972.25 980.25 988.25 Disposable elastic earloop Face mask is made of non-woven fiber fabric, comfortable and breathable, soft and skin-friendly, and easy to use. Face mask Surgical Mask,Disposable Face Mask,Medical masks ,Disposable medical mask Dongguan City Leya Electronic Technology Co. Ltd , https://www.dgleya.com
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