Pan-American television frequencies
The Pan-American television frequencies are different for terrestrial and cable television systems. Terrestrial television channels are divided into two bands: the VHF band which comprises channels 2 through 13 and occupies frequencies between 54 and 216 MHz, and the UHF band, which comprises channels 14 through 36 and occupies frequencies between 470 and 608 MHz. These bands are different enough in frequency that they often require separate antennas to receive (although many antennas cover both VHF and UHF), and separate tuning controls on the television set. The VHF band is further divided into two frequency ranges: VHF low band (Band I) between 54 and 88 MHz, containing channels 2 through 6, and VHF high band (Band III) between 174 and 216 MHz, containing channels 7 through 13. The wide spacing between these frequency bands is responsible for the complicated design of rooftop TV antennas. The UHF band has higher noise and greater attenuation, so higher gain antennas are often required for UHF.
Terrestrial television
[edit]History
[edit]The VHF band plan was modified several times before 1948. The last of these changes was the deletion of channel 1, originally intended as a community channel. This allocation of the spectrum was given to two-way land-mobile radio.[1]
UHF channels 70–83 in the United States were reallocated in 1983.
In March 2008, the FCC requested public comment on turning the bandwidth currently occupied by analog television channels 5 and 6 (76–88 MHz) over to extending the FM terrestrial band when the DTT transition was to be completed in February 2009 (ultimately delayed to June 2009).[2] This proposed allocation would effectively assign frequencies corresponding to the existing Japanese FM radio service (which begins at 76 MHz) for use as an extension to the existing North American FM broadcast band.[3] [needs update]
700 MHz band
[edit]The UHF 700 MHz band comprised the spectrum of UHF channels 52 through 69. Channels 52–69 are no longer available for normal, high-power digital terrestrial television broadcasting in the United States, but some channels are available for use as low-power or translator stations.[4] Wireless microphones and medical telemetry devices shared some of the space on this television band, if transmitting at a very low power. After the migration to digital terrestrial television in 2009, the Federal Communications Commission (FCC) banned all of these from using the 700 MHz band, effective June 12, 2010. The 700 MHz band is now used for public safety communications and wireless broadband providers.[5]
600 MHz band
[edit]In 2017 the FCC auctioned off all remaining UHF spectrum including and above UHF channel 38.[6] This required the reconfiguration of channel allotment (known in the terrestrial television industry as the channel "repack"), allowing for higher gain small antennas to cover a smaller frequency range. In April 2017 it was decided that channels 38 to 51 would be deleted, but channel 37 remains reserved. Channel repacking proceeded in 10 phases from September 2018 through July 2020.[7]
Channel frequencies
[edit]VHF band
[edit]Channel | Lower edge | Video carrier | ATSC pilot | Audio carrier | Upper edge |
---|---|---|---|---|---|
1 | 44 | 45.25 | 44.31 | 49.75 | 50 |
(Gap in band plan - amateur 6-meter band) | |||||
2 | 54 | 55.25 | 54.31 | 59.75 | 60 |
3 | 60 | 61.25 | 60.31 | 65.75 | 66 |
4 | 66 | 67.25 | 66.31 | 71.66 | 72 |
(Gap in band plan - because 75MHz used by aeronautical navigation) | |||||
5 | 76 | 77.25 | 76.31 | 81.75 | 82 |
6 | 82 | 83.25 | 82.31 | 87.75 | 88 |
Channel | Lower edge | Video carrier | ATSC pilot | Audio carrier | Upper edge |
---|---|---|---|---|---|
7 | 174 | 175.25 | 174.31 | 179.75 | 180 |
8 | 180 | 181.25 | 180.31 | 185.75 | 186 |
9 | 186 | 187.25 | 186.31 | 191.75 | 192 |
10 | 192 | 193.25 | 192.31 | 197.75 | 198 |
11 | 198 | 199.25 | 198.31 | 203.75 | 204 |
12 | 204 | 205.25 | 204.31 | 209.75 | 210 |
13 | 210 | 211.25 | 210.31 | 215.75 | 216 |
UHF band
[edit]The following table lists terrestrial television channels in the ultra high frequency band as they were allocated in their modern form by the Federal Communications Commission on April 11, 1952. The original allocation included 70 UHF channels (14–83) with 6 MHz separation. In the decades since, many of the channels have been de-allocated and reserved for other purposes. Channels 14–36 are usable UHF channels in the United States after the most recent change was completed in 2020. Formerly allocated channels are indicated with a colored background, and their dispositions are explained in the notes below the table.
Channel | Lower edge | Video carrier | ATSC pilot | Audio carrier | Upper edge |
---|---|---|---|---|---|
14 | 470 | 471.25 | 470.31 | 475.75 | 476 |
15 | 476 | 477.25 | 476.31 | 481.75 | 482 |
16 | 482 | 483.25 | 482.31 | 487.75 | 488 |
17 | 488 | 489.25 | 488.31 | 493.75 | 494 |
18 | 494 | 495.25 | 494.31 | 499.75 | 500 |
19 | 500 | 501.25 | 500.31 | 505.75 | 506 |
20 | 506 | 507.25 | 506.31 | 511.75 | 512 |
21 | 512 | 513.25 | 512.31 | 517.75 | 518 |
22 | 518 | 519.25 | 518.31 | 523.75 | 524 |
23 | 524 | 525.25 | 524.31 | 529.75 | 530 |
24 | 530 | 531.25 | 530.31 | 535.75 | 536 |
25 | 536 | 537.25 | 536.31 | 541.75 | 542 |
26 | 542 | 543.25 | 542.31 | 547.75 | 548 |
27 | 548 | 549.25 | 548.31 | 553.75 | 554 |
28 | 554 | 555.25 | 554.31 | 559.75 | 560 |
29 | 560 | 561.25 | 560.31 | 565.75 | 566 |
30 | 566 | 567.25 | 566.31 | 571.75 | 572 |
31 | 572 | 573.25 | 572.31 | 577.75 | 578 |
32 | 578 | 579.25 | 578.31 | 583.75 | 584 |
33 | 584 | 585.25 | 584.31 | 589.75 | 590 |
34 | 590 | 591.25 | 590.31 | 595.75 | 596 |
35 | 596 | 597.25 | 596.31 | 601.75 | 602 |
36 | 602 | 603.25 | 602.31 | 607.75 | 608 |
37 | 608 | 609.25 | 608.31 | 613.75 | 614 |
38 | 614 | 615.25 | 614.31 | 619.75 | 620 |
39 | 620 | 621.25 | 620.31 | 625.75 | 626 |
40 | 626 | 627.25 | 626.31 | 631.75 | 632 |
41 | 632 | 633.25 | 632.31 | 637.75 | 638 |
42 | 638 | 639.25 | 638.31 | 643.75 | 644 |
43 | 644 | 645.25 | 644.31 | 649.75 | 650 |
44 | 650 | 651.25 | 650.31 | 655.75 | 656 |
45 | 656 | 657.25 | 656.31 | 661.75 | 662 |
46 | 662 | 663.25 | 662.31 | 667.75 | 668 |
47 | 668 | 669.25 | 668.31 | 673.75 | 674 |
48 | 674 | 675.25 | 674.31 | 679.75 | 680 |
49 | 680 | 681.25 | 680.31 | 685.75 | 686 |
50 | 686 | 687.25 | 686.31 | 691.75 | 692 |
51 | 692 | 693.25 | 692.31 | 697.75 | 698[8][9] |
52 | 698 | 699.25 | 698.31 | 703.75 | 704 |
53 | 704 | 705.25 | 704.31 | 709.75 | 710 |
54 | 710 | 711.25 | 710.31 | 715.75 | 716 |
55 | 716 | 717.25 | 716.31 | 721.75 | 722 |
56 | 722 | 723.25 | 722.31 | 727.75 | 728 |
57 | 728 | 729.25 | 728.31 | 733.75 | 734 |
58 | 734 | 735.25 | 734.31 | 739.75 | 740 |
59 | 740 | 741.25 | 740.31 | 745.75 | 746 |
60 | 746 | 747.25 | 746.31 | 751.75 | 752 |
61 | 752 | 753.25 | 752.31 | 757.75 | 758 |
62 | 758 | 759.25 | 758.31 | 763.75 | 764 |
63 | 764 | 765.25 | 764.31 | 769.75 | 770 |
64 | 770 | 771.25 | 770.31 | 775.75 | 776 |
65 | 776 | 777.25 | 776.31 | 781.75 | 782 |
66 | 782 | 783.25 | 782.31 | 787.75 | 788 |
67 | 788 | 789.25 | 788.31 | 793.75 | 794 |
68 | 794 | 795.25 | 794.31 | 799.75 | 800 |
69 | 800 | 801.25 | 800.31 | 805.75 | 806 |
70 | 806 | 807.25 | 806.31 | 811.75 | 812 |
71 | 812 | 813.25 | 812.31 | 817.75 | 818 |
72 | 818 | 819.25 | 818.31 | 823.75 | 824 |
73 | 824 | 825.25 | 824.31 | 829.75 | 830 |
74 | 830 | 831.25 | 830.31 | 835.75 | 836 |
75 | 836 | 837.25 | 836.31 | 841.75 | 842 |
76 | 842 | 843.25 | 842.31 | 847.75 | 848 |
77 | 848 | 849.25 | 848.31 | 853.75 | 854 |
78 | 854 | 855.25 | 854.31 | 859.75 | 860 |
79 | 860 | 861.25 | 860.31 | 865.75 | 866 |
80 | 866 | 867.25 | 866.31 | 871.75 | 872 |
81 | 872 | 873.25 | 872.31 | 877.75 | 878 |
82 | 878 | 879.25 | 878.31 | 883.75 | 884 |
83 | 884 | 885.25 | 884.31 | 889.75 | 890 |
Notes
[edit]- Channel 1 (shaded purple above) was removed for the land mobile service. One San Francisco station, KAXT-CD, was assigned Channel 1 as a virtual channel in 2017, but broadcasts on UHF channel 22.
- Channel 37 (shaded pink above) is reserved for radio astronomy in the United States, Canada, Bermuda and the Bahamas; thus there are no television stations assigned to it. Mexico, Colombia, Chile, Peru, Brazil and Argentina informally observe a ban on transmitters using the channel. One New York City station, WNWT-LD, was assigned Channel 37 as a virtual channel in 2019, but broadcasts on VHF channel 3.
- Channels 38 through 51 (the 600 MHz band, shaded yellow above) have been displaced in the US by the Broadcast incentive auction.
- On August 22, 2011, the United States' Federal Communications Commission announced a freeze on all future applications for broadcast stations requesting to use channel 51,[8] to prevent adjacent-channel interference to the A-Block of the 700 MHz band. Later that year (on December 16, 2011), Industry Canada and the CRTC followed suit in placing a moratorium on future television stations using channel 51 for broadcast use for the same reason.[9]
- Channels 52 through 69 (the 700 MHz band, shaded brown above) in the United States have been reallocated following the conversion to digital TV on June 12, 2009, although some low-power and translator stations may still be in use on these channels.[4]
- The frequencies used by UHF channels 70 through 83 (shaded blue above) were reallocated to the Land Mobile Radio System (Public Safety and Trunked Radio) and mobile phones in a CCIR worldwide convention in 1983.[4][additional citation(s) needed]
- With the advent of digital television in 2009, stations are allowed to identify themselves by a virtual channel that may not necessarily be the same as the station's RF channel. Virtual channels 1, 37, and 70 to 99 can be assigned via PSIP even though there is no corresponding physical station on that RF channel.[10]
Cable television frequency issues
[edit]- Cable-ready channels 6, 95, 96, and 97 have audio carriers which overlap FM radio stations (87.7, 95.7, 101.7 and 107.7).
- Cable-ready channels 57 to 61 overlap the 70cm amateur radio band and can be used for amateur television.
- Cable-ready channel 64 is within the Family Radio Service and General Mobile Radio Service (GMRS) band.
Historical band plans
[edit]Channel | Lower edge | Video carrier | Audio carrier | Upper edge | Current U.S. use |
---|---|---|---|---|---|
1 | 50 | 51.25 | 55.75 | 56 | Amateur band, TV ch. 2 |
(Break in band plan) | |||||
2 | 66 | 67.25 | 71.75 | 72 | TV ch. 4 |
3 | 72 | 73.25 | 77.75 | 78 | Radio-controlled car/plane hobby, TV ch. 5 |
4 | 78 | 79.25 | 83.75 | 84 | TV ch. 5 |
5 | 84 | 85.25 | 89.75 | 90 | TV ch. 6, non-commercial educational FM radio |
(Break in band plan) | |||||
6 | 96 | 97.25 | 101.75 | 102 | FM broadcasting |
7 | 102 | 103.25 | 107.75 | 108 |
Channel | Lower edge | Video carrier | Audio carrier | Upper edge | Current U.S. use |
---|---|---|---|---|---|
8 | 162 | 163.25 | 167.75 | 168 | NOAA Weather Radio (162) |
(Break in band plan) | |||||
9 | 180 | 181.25 | 185.75 | 186 | TV ch. 8 |
10 | 186 | 187.25 | 191.75 | 192 | TV ch. 9 |
(Break in band plan) | |||||
11 | 204 | 205.25 | 209.75 | 210 | TV ch. 12 |
12 | 210 | 211.25 | 215.75 | 216 | TV ch. 13 |
(Break in band plan) | |||||
13 | 234 | 235.25 | 239.75 | 240 | Military |
14 | 240 | 241.25 | 245.75 | 246 | |
(Break in band plan) | |||||
15 | 258 | 259.25 | 263.75 | 264 | Military |
16 | 264 | 265.25 | 269.75 | 270 | |
(Break in band plan) | |||||
17 | 282 | 283.25 | 287.75 | 288 | Military |
18 | 288 | 289.25 | 293.75 | 294 |
Cable television
[edit]Harmonically-related carriers (HRC)
[edit]Harmonically-related carriers (HRC) is a system for assigning television channel numbers to bands of frequencies over a cable television network.[citation needed] William Grant, in his book,[11] states:
"By harmonically relating the carrier frequencies themselves it is … possible to improve system performance. This does not reduce the beats produced, but positions them within the system transmission spectrum, such that they are more tolerable. In effect, all signal carriers are spaced precisely at 6 MHz apart, and thus, all beats generated are at 6 MHz increments. Since the television signals are vestigial sideband modulation, if the beat products can be manipulated to fall on or near the Radio frequency carriers themselves, they are much less offensive."
Incrementally-related carriers (IRC)
[edit]Incrementally-related carriers (IRC) is a system for assigning television channel numbers to bands of frequencies over a cable television network.[citation needed] The IRC plan attempts to minimize distortion products by deriving all video carrier signals from a common source.[12] The IRC system assigns channel frequencies (for the Pan-American NTSC-M system) spaced 6 MHz apart. In an IRC system, the VHF channels are at their off-air frequencies except for channels 5 and 6, which will be 2 MHz higher than usual.[13]
Both HRC and IRC systems have the added advantage of allowing for one extra channel to be positioned between channels four and five, as the gap between them increases from 4 MHz wide to 6 MHz wide. It is often mapped as channel one or channels 2, 3, and 4 become channels 1, 2, and 3, and the new one becomes channel 5.
Channel frequencies
[edit]These frequencies are used for both NTSC-based analog television and QAM-based digital television. Band plans for Pan-American American cable television systems are standardized in EIA standard 542-B.[14]
Channels 57 to 61, and 143 to 145, are used in amateur television.
- NOTE: Frequencies given are for luminance carriers. For channel center frequencies, add 1.75 MHz.
Channel number | Channel letter | Standard video carrier (MHz) | Harmonically-related video carrier (MHz) | Incrementally-related video carrier (MHz) | QAM / CDSREF carrier (MHz) | Audio carrier (MHz) |
---|---|---|---|---|---|---|
Subband "T" channels | ||||||
T-7 | 7.25 | 6.0003 | 7.25 | 9.00 | 11.75 | |
T-8 | 13.25 | 12.0006 | 13.25 | 15.00 | 17.75 | |
T-9 | 19.25 | 18.0009 | 19.25 | 21.00 | 23.75 | |
T-10 | 25.25 | 24.0012 | 25.25 | 27.00 | 29.75 | |
T-11 | 31.25 | 30.0015 | 31.25 | 33.00 | 35.75 | |
T-12 | 37.25 | 36.0018 | 37.25 | 39.00 | 41.75 | |
T-13 | 43.25 | 42.0021 | 43.25 | 45.00 | 47.75 | |
T-14 | 49.25 | 48.0024 | 49.25 | 51.00 | 53.75 | |
(Break in band plan) | ||||||
Lowband | ||||||
2 | 2 | 55.25 | 54.0027 | 55.25 | 57.00 | 59.75 |
3 | 3 | 61.25 | 60.0030 | 61.25 | 63.00 | 65.75 |
4 | 4 | 67.25 | 66.0033 | 67.25 | 69.00 | 71.75 |
1 | A-8 (4A or 5A) | 72.25 | 72.0036 | 73.25 | 75.00 | 77.75 |
5 | 5 (or A-7) | 77.25 | 78.0039 | 79.25 | 79.00 or 81.00 | 81.75 or 83.75 |
6 | 6 (or A-6) | 83.25 | 84.0042 | 85.25 | 85.00 or 87.00 | 87.75 or 89.75 |
Midband | ||||||
95 | X or A-5 | 91.25 | 90.0045 | 91.25 | 93.00 | 95.75 |
96 | Y or A-4 | 97.25 | 96.0048 | 97.25 | 99.00 | 101.75 |
97 | Z or A-3 | 103.25 | 102.0051 | 103.25 | 105.00 | 107.75 |
98 | 00 or A-2 | 109.25 | 108.0054 | 109.25 | 111.00 | 113.75 |
99 | 01 or A-1 | 115.25 | 114.0057 | 115.25 | 117.00 | 119.75 |
Midband | ||||||
14 | A | 121.25 | 120.0060 | 121.25 | 123.00 | 125.75 |
15 | B | 127.25 | 126.0063 | 127.25 | 129.00 | 131.75 |
16 | C | 133.25 | 132.0066 | 133.25 | 135.00 | 137.75 |
17 | D | 139.25 | 138.0069 | 139.25 | 141.00 | 143.75 |
18 | E | 145.25 | 144.0072 | 145.25 | 147.00 | 149.75 |
19 | F | 151.25 | 150.0075 | 151.25 | 153.00 | 155.75 |
20 | G | 157.25 | 156.0078 | 157.25 | 159.00 | 161.75 |
21 | H | 163.25 | 162.0081 | 163.25 | 165.00 | 167.75 |
22 | I | 169.25 | 168.0084 | 169.25 | 171.00 | 173.75 |
Highband | ||||||
7 | 7 | 175.25 | 174.0087 | 175.25 | 177.00 | 179.75 |
8 | 8 | 181.25 | 180.0090 | 181.25 | 183.00 | 185.75 |
9 | 9 | 187.25 | 186.0093 | 187.25 | 189.00 | 191.75 |
10 | 10 | 193.25 | 192.0096 | 193.25 | 195.00 | 197.75 |
11 | 11 | 199.25 | 198.0099 | 199.25 | 201.00 | 203.75 |
12 | 12 | 205.25 | 204.0102 | 205.25 | 207.00 | 209.75 |
13 | 13 | 211.25 | 210.0105 | 211.25 | 213.00 | 215.75 |
Superband | ||||||
23 | J | 217.25 | 216.0108 | 217.25 | 219.00 | 221.75 |
24 | K | 223.25 | 222.0111 | 223.25 | 225.00 | 227.75 |
25 | L | 229.25 | 228.0114 | 229.25 | 231.00 | 233.75 |
26 | M | 235.25 | 234.0117 | 235.25 | 237.00 | 239.75 |
27 | N | 241.25 | 240.0120 | 241.25 | 243.00 | 245.75 |
28 | O | 247.25 | 246.0123 | 247.25 | 249.00 | 251.75 |
29 | P | 253.25 | 252.0126 | 253.25 | 255.00 | 257.75 |
30 | Q | 259.25 | 258.0129 | 259.25 | 261.00 | 263.75 |
31 | R | 265.25 | 264.0132 | 265.25 | 267.00 | 269.75 |
32 | S | 271.25 | 270.0135 | 271.25 | 273.00 | 275.75 |
33 | T | 277.25 | 276.0138 | 277.25 | 279.00 | 281.75 |
34 | U | 283.25 | 282.0141 | 283.25 | 285.00 | 287.75 |
35 | V | 289.25 | 288.0144 | 289.25 | 291.00 | 293.75 |
36 | W | 295.25 | 294.0147 | 295.25 | 297.00 | 299.75 |
Hyperband | ||||||
37 | AA or W+1 | 301.25 | 300.0150 | 301.25 | 303.00 | 305.75 |
38 | BB or W+2 | 307.25 | 306.0153 | 307.25 | 309.00 | 311.75 |
39 | CC or W+3 | 313.25 | 312.0156 | 313.25 | 315.00 | 317.75 |
40 | DD or W+4 | 319.25 | 318.0159 | 319.25 | 321.00 | 323.75 |
41 | EE or W+5 | 325.25 | 324.0162 | 325.25 | 327.00 | 329.75 |
42 | FF or W+6 | 331.25 | 330.0165 | 331.25 | 333.00 | 335.75 |
43 | GG or W+7 | 337.25 | 336.0168 | 337.25 | 339.00 | 341.75 |
44 | HH or W+8 | 343.25 | 342.0171 | 343.25 | 345.00 | 347.75 |
45 | II or W+9 | 349.25 | 348.0174 | 349.25 | 351.00 | 353.75 |
46 | JJ or W+10 | 355.25 | 354.0177 | 355.25 | 357.00 | 359.75 |
47 | KK or W+11 | 361.25 | 360.0180 | 361.25 | 363.00 | 365.75 |
48 | LL or W+12 | 367.25 | 366.0183 | 367.25 | 369.00 | 371.75 |
49 | MM or W+13 | 373.25 | 372.0186 | 373.25 | 375.00 | 377.75 |
50 | NN or W+14 | 379.25 | 378.0189 | 379.25 | 381.00 | 383.75 |
51 | OO or W+15 | 385.25 | 384.0192 | 385.25 | 387.00 | 389.75 |
52 | PP or W+16 | 391.25 | 390.0195 | 391.25 | 393.00 | 395.75 |
53 | QQ or W+17 | 397.25 | 396.0198 | 397.25 | 399.00 | 401.75 |
54 | RR or W+18 | 403.25 | 402.0201 | 403.25 | 405.00 | 407.75 |
55 | SS or W+19 | 409.25 | 408.0204 | 409.25 | 411.00 | 413.75 |
56 | TT or W+20 | 415.25 | 414.0207 | 415.25 | 417.00 | 419.75 |
57 | UU or W+21 | 421.25 | 420.0210 | 421.25 | 423.00 | 425.75 |
58 | VV or W+22 | 427.25 | 426.0213 | 427.25 | 429.00 | 431.75 |
59 | WW or W+23 | 433.25 | 432.0216 | 433.25 | 435.00 | 437.75 |
60 | XX or W+24 | 439.25 | 438.0219 | 439.25 | 441.00 | 443.75 |
61 | YY or W+25 | 445.25 | 444.0222 | 445.25 | 447.00 | 449.75 |
62 | ZZ or W+26 | 451.25 | 450.0225 | 451.25 | 453.00 | 455.75 |
63 | AAA or W+27 | 457.25 | 456.0228 | 457.25 | 459.00 | 461.75 |
64 | BBB or W+28 | 463.25 | 462.0231 | 463.25 | 465.00 | 467.75 |
Ultraband | ||||||
65 | CCC or W+29 | 469.25 | 468.0234 | 469.25 | 471.00 | 473.75 |
66 | DDD or W+30 | 475.25 | 474.0237 | 475.25 | 477.00 | 479.75 |
67 | EEE or W+31 | 481.25 | 480.0240 | 481.25 | 483.00 | 485.75 |
68 | FFF or W+32 | 487.25 | 486.0243 | 487.25 | 489.00 | 491.75 |
69 | GGG or W+33 | 493.25 | 492.0246 | 493.25 | 495.00 | 497.75 |
70 | HHH or W+34 | 499.25 | 498.0249 | 499.25 | 501.00 | 503.75 |
71 | III or W+35 | 505.25 | 504.0252 | 505.25 | 507.00 | 509.75 |
72 | JJJ or W+36 | 511.25 | 510.0255 | 511.25 | 513.00 | 515.75 |
73 | KKK or W+37 | 517.25 | 516.0258 | 517.25 | 519.00 | 521.75 |
74 | LLL or W+38 | 523.25 | 522.0261 | 523.25 | 525.00 | 527.75 |
75 | MMM or W+39 | 529.25 | 528.0264 | 529.25 | 531.00 | 533.75 |
76 | NNN or W+40 | 535.25 | 534.0267 | 535.25 | 537.00 | 539.75 |
77 | OOO or W+41 | 541.25 | 540.0270 | 541.25 | 543.00 | 545.75 |
78 | PPP or W+42 | 547.25 | 546.0273 | 547.25 | 549.00 | 551.75 |
79 | QQQ or W+43 | 553.25 | 552.0276 | 553.25 | 555.00 | 557.75 |
80 | RRR or W+44 | 559.25 | 558.0279 | 559.25 | 561.00 | 563.75 |
81 | SSS or W+45 | 565.25 | 564.0282 | 565.25 | 567.00 | 569.75 |
82 | TTT or W+46 | 571.25 | 570.0285 | 571.25 | 573.00 | 575.75 |
83 | UUU or W+47 | 577.25 | 576.0288 | 577.25 | 579.00 | 581.75 |
84 | VVV or W+48 | 583.25 | 582.0291 | 583.25 | 585.00 | 587.75 |
85 | WWW or W+49 | 589.25 | 588.0294 | 589.25 | 591.00 | 593.75 |
86 | XXX or W+50 | 595.25 | 594.0297 | 595.25 | 597.00 | 599.75 |
87 | YYY or W+51 | 601.25 | 600.0300 | 601.25 | 603.00 | 605.75 |
88 | ZZZ or W+52 | 607.25 | 606.0303 | 607.25 | 609.00 | 611.75 |
89 | 89 or W+53 | 613.25 | 612.0306 | 613.25 | 615.00 | 617.75 |
90 | 90 or W+54 | 619.25 | 618.0309 | 619.25 | 621.00 | 623.75 |
91 | 91 or W+55 | 625.25 | 624.0312 | 625.25 | 627.00 | 629.75 |
92 | 92 or W+56 | 631.25 | 630.0315 | 631.25 | 633.00 | 635.75 |
93 | 93 or W+57 | 637.25 | 636.0318 | 637.25 | 639.00 | 641.75 |
94 | 94 or W+58 | 643.25 | 642.0321 | 643.25 | 645.00 | 647.75 |
Jumboband | ||||||
100 | 100 or W+59 | 649.25 | 648.0324 | 649.25 | 651.00 | 653.75 |
101 | 101 or W+60 | 655.25 | 654.0327 | 655.25 | 657.00 | 659.75 |
102 | 102 or W+61 | 661.25 | 660.0330 | 661.25 | 663.00 | 665.75 |
103 | 103 or W+62 | 667.25 | 666.0333 | 667.25 | 669.00 | 671.75 |
104 | 104 or W+63 | 673.25 | 672.0336 | 673.25 | 675.00 | 677.75 |
105 | 105 or W+64 | 679.25 | 678.0339 | 679.25 | 681.00 | 683.75 |
106 | 106 or W+65 | 685.25 | 684.0342 | 685.25 | 687.00 | 689.75 |
107 | 107 or W+66 | 691.25 | 690.0345 | 691.25 | 693.00 | 695.75 |
108 | 108 or W+67 | 697.25 | 696.0348 | 697.25 | 699.00 | 701.75 |
109 | 109 or W+68 | 703.25 | 702.0351 | 703.25 | 705.00 | 707.75 |
110 | 110 or W+69 | 709.25 | 708.0354 | 709.25 | 711.00 | 713.75 |
111 | 111 or W+70 | 715.25 | 714.0357 | 715.25 | 717.00 | 719.75 |
112 | 112 or W+71 | 721.25 | 720.0360 | 721.25 | 723.00 | 725.75 |
113 | 113 or W+72 | 727.25 | 726.0363 | 727.25 | 729.00 | 731.75 |
114 | 114 or W+73 | 733.25 | 732.0366 | 733.25 | 735.00 | 737.75 |
115 | 115 or W+74 | 739.25 | 738.0369 | 739.25 | 741.00 | 743.75 |
116 | 116 or W+75 | 745.25 | 744.0372 | 745.25 | 747.00 | 749.75 |
117 | 117 or W+76 | 751.25 | 750.0375 | 751.25 | 753.00 | 755.75 |
118 | 118 or W+77 | 757.25 | 756.0378 | 757.25 | 759.00 | 761.75 |
119 | 119 or W+78 | 763.25 | 762.0381 | 763.25 | 765.00 | 767.75 |
120 | 120 or W+79 | 769.25 | 768.0384 | 769.25 | 771.00 | 773.75 |
121 | 121 or W+80 | 775.25 | 774.0387 | 775.25 | 777.00 | 779.75 |
122 | 122 or W+81 | 781.25 | 780.0390 | 781.25 | 783.00 | 785.75 |
123 | 123 or W+82 | 787.25 | 786.0393 | 787.25 | 789.00 | 791.75 |
124 | 124 or W+83 | 793.25 | 792.0396 | 793.25 | 795.00 | 797.75 |
125 | 125 or W+84 | 799.25 | 798.0399 | 799.25 | 801.00 | 803.75 |
126 | 126 or W+85 | 805.25 | 804.0402 | 805.25 | 807.00 | 809.75 |
127 | 127 or W+86 | 811.25 | 810.0405 | 811.25 | 813.00 | 815.75 |
128 | 128 or W+87 | 817.25 | 816.0408 | 817.25 | 819.00 | 821.75 |
129 | 129 or W+88 | 823.25 | 822.0411 | 823.25 | 825.00 | 827.75 |
130 | 130 or W+89 | 829.25 | 828.0414 | 829.25 | 831.00 | 833.75 |
131 | 131 or W+90 | 835.25 | 834.0417 | 835.25 | 837.00 | 839.75 |
132 | 132 or W+91 | 841.25 | 840.0420 | 841.25 | 843.00 | 845.75 |
133 | 133 or W+92 | 847.25 | 846.0423 | 847.25 | 849.00 | 851.75 |
134 | 134 or W+93 | 853.25 | 852.0426 | 853.25 | 855.00 | 857.75 |
135 | 135 or W+94 | 859.25 | 858.0429 | 859.25 | 861.00 | 863.75 |
136 | 136 or W+95 | 865.25 | 864.0432 | 865.25 | 867.00 | 869.75 |
137 | 137 or W+96 | 871.25 | 870.0435 | 871.25 | 873.00 | 875.75 |
138 | 138 or W+97 | 877.25 | 876.0438 | 877.25 | 879.00 | 881.75 |
139 | 139 or W+98 | 883.25 | 882.0441 | 883.25 | 885.00 | 887.75 |
140 | 140 or W+99 | 889.25 | 888.0444 | 889.25 | 891.00 | 893.75 |
141 | 141 or W+100 | 895.25 | 894.0447 | 895.25 | 897.00 | 899.75 |
142 | 142 or W+101 | 901.25 | 900.0450 | 901.25 | 903.00 | 905.75 |
143 | 143 or W+102 | 907.25 | 906.0453 | 907.25 | 909.00 | 911.75 |
144 | 144 or W+103 | 913.25 | 912.0456 | 913.25 | 915.00 | 917.75 |
145 | 145 or W+104 | 919.25 | 918.0459 | 919.25 | 921.00 | 923.75 |
146 | 146 or W+105 | 925.25 | 924.0462 | 925.25 | 927.00 | 929.75 |
147 | 147 or W+106 | 931.25 | 930.0465 | 931.25 | 933.00 | 935.75 |
148 | 148 or W+107 | 937.25 | 936.0468 | 937.25 | 939.00 | 941.75 |
149 | 149 or W+108 | 943.25 | 942.0471 | 943.25 | 945.00 | 947.75 |
150 | 150 or W+109 | 949.25 | 948.0474 | 949.25 | 951.00 | 953.75 |
151 | 151 or W+110 | 955.25 | 954.0477 | 955.25 | 957.00 | 959.75 |
152 | 152 or W+111 | 961.25 | 960.0480 | 961.25 | 963.00 | 965.75 |
153 | 153 or W+112 | 967.25 | 966.0483 | 967.25 | 969.00 | 971.75 |
154 | 154 or W+113 | 973.25 | 972.0486 | 973.25 | 975.00 | 977.75 |
155 | 155 or W+114 | 979.25 | 978.0489 | 979.25 | 981.00 | 983.75 |
156 | 156 or W+115 | 985.25 | 984.0492 | 985.25 | 987.00 | 989.75 |
157 | 157 or W+116 | 991.25 | 990.0495 | 991.25 | 993.00 | 995.75 |
158 | 158 or W+117 | 997.25 | 996.0498 | 997.25 | 999.00 | 1001.75 |
Channel usage
[edit]Cable channels 98 and 99 (A2 and A1, 108-120 MHz), if used, have appeared as channel 00 and 01 respectively on some cable boxes.[15]
See also
[edit]- Australian and New Zealand television frequencies
- Broadcast television systems, including:
- Early television stations
- European cable television frequencies
- Knife-edge effect
- Multichannel television sound
- Television channel frequencies
- Ultra high frequency
- Very high frequency
References
[edit]- ^ "What Ever Happened to Channel 1".
- ^ "In the Matter of Promoting Diversification of Ownership in the Broadcasting Services". Federal Communications Commission. 2008-05-16. Retrieved 2013-07-03.
Certain commenters have urged the Commission to give a "hard look" to a proposal that the Commission re-allocate TV Channels 5 and 6 for FM broadcasting
73 FR 28400, 73 FR 28403 - ^ Could EXB Band Be Your New Home? Archived 2009-05-06 at the Wayback MachineRadioWorld September 10, 2008
- ^ a b c "FCC Online Table of Frequency Allocations 47 C.F.R. § 2.106" (PDF). Federal Communications Commission. 2016-08-31. Archived from the original (PDF) on 2016-10-30.
- ^ "Distribution, Sale and Use of Wireless Microphones Operating in the 700 MHz Band Prohibited". FCC.
- ^ McAdams, Deborah D. (29 April 2016). "FCC Releases 126 MHz Clearing Target". TvTechnology.
- ^ "600 MHz spectrum - Spectrum Gateway". SpectrumGateway.com. Retrieved 2020-07-19.
- ^ a b FCC Public Notice DA-11-1428A1:
- ^ a b Government of Canada, Industry Canada (December 30, 2011). "Industry Canada Advisory Letter - Moratorium on the Use of Television Channel 51". IC.gc.ca.
- ^ "What Is the Difference Between a RF Channel and a Virtual Channel?". ChannelMaster. Retrieved 2014-12-22.
- ^ Cable Television, 2nd edition, GWG Associates, Schoharie, NY, 1988, page 82
- ^ Walter S. Ciciora (ed), Modern cable television technology: video, voice, and data communications , Morgan Kaufmann, 2004 ISBN 1-55860-828-1, page 399
- ^ "hackerscatalog.com at Directnic". HackersCatalog.com.
- ^ Walter S. Ciciora, Modern cable television technology: video, voice, and data communications Morgan Kaufmann, 2004 ISBN 1-55860-828-1, pages 397-402
- ^ "Technical Notes". HackersCatalog.com. Extreme Media. 2012. Archived from the original on 2014-07-14. Retrieved 2016-08-12.
External links
[edit]- ARRL – TV Channel, CATV and FM Broadcast Frequencies by Kevin K. Custer (W3KKC)
- What ever happened to Channel 1? – J. W. Reiser, based on a Radio-Electronics article of the same name by David A. Ferre
- Post-transition U.S. digital TV channel assignments as of August 1, 2007