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Newsgroups: sci.electronics
From: andy@cbrown.claremont.edu
Subject: Re: CATV channel frequencies USA (long)
Lines: 345
Organization: Harvey Mudd College
Date: 28 Jul 92 01:40:48 PDT
In article <sysrick.711776020@starbase.spd.louisville.edu>, sysrick@starbase.sp
d.louisville.edu (Rick McTeague) writes:
> I'd like to know the frequencies used by each of the TV channels on
> cable television. Yes, I know about 2-13 being the same as broadcast
> TV... what about the rest, though?
>
> Rick
Here is a list of TV frequencies. In the US, a TV channel is a 6 MHz
wide chunk of bandspace. The bottom edge of the over-the-air
channel 2 is 54 MHz and the upper edge is 60 MHz. Within this 6 MHz
space is a video carrier, a color carrier, and an audio carrier.
The frequency of the video carrier is 1.25 MHz above the lower edge,
so for channel 2 the video is at 55.25 MHz.
The color carrier is approx. 3.58 MHz above the _video_ carrier (N.B.
not the lower edge), so for ch 2 it is 58.83 MHz.
The audio carrier is 4.5 MHz above the _video_ carrier, so for ch 2
it is 59.75 MHz.
The reason I mention all of this is that you have to be careful to
note how a channel frequency is being specified. The two common methods
are (1) specifying the lower edge (e.g. 54 MHz, but often as a range of
lower edge to upper edge like 54-60 MHz) and (2) specifying the
frequency of the video carrier (e.g. 55.25 MHz). In the following lists
I always use the latter method, specifying the video carrier.
CATV has channels with frequencies below channel 2. They are designated
T-7 (tee seven or tee dash seven) through T-14 and are usually used for
transmission in the reverse direction. If your local city council meeting
is broadcast live, the camera is being modulated onto one of those T
channels and sent back up to the cable system headend whereupon it is
broadcast outbound on the community cable access channel.
In the list I have some channels with the designation A-1 (A minus one,
not A dash one) through A-8. They are so designated because their
frequencies immediately precede that of the CATV channel known as A.
In the CATV listing, the column labeled Common gives the common
industry parlance for that channel. The next column labeled EIA gives
the new EIA standardized designation. Column STD shows the standard
CATV frequency which usually matches IRC. IRC stands for Incrementally
Related Carrier and means that the _lower_edge_ of the channel space
is on the nice, round-numbered boundary such as 54 MHz, 60 MHz, 66 MHz
etc. HRC stands for Harmonically Related Carrier, and as you can see
means that it is the _video_carrier_ that is assigned the nice round
number (6 MHz harmonics, hence). Some cable systems use IRC, some use HRC.
The number of channels on a given cable system varies. Very old systems
might only go up to 300 or 350 MHz. Most common in the past ten years or
so is 450 MHz. Newer systems may be 550 MHz. The latest and greatest with
any meaningful installed base is 800 or 860 MHz (somebody correct me), but
it is rare and pricey. The list herein only goes up to 550 MHz.
FM radio frequencies are thrown in for good measure.
This stuff was gathered from several sources. My thanks to all of them.
Error reports are welcome.
AIR 2 55.25 VHF-LO
AIR 3 61.25 VHF-LO
AIR 4 67.25 VHF-LO
AIR 5 77.25 VHF-LO
AIR 6 83.25 VHF-LO
AIR 7 175.25 VHF-HI
AIR 8 181.25 VHF-HI
AIR 9 187.25 VHF-HI
AIR 10 193.25 VHF-HI
AIR 11 199.25 VHF-HI
AIR 12 205.25 VHF-HI
AIR 13 211.25 VHF-HI
AIR 14 471.25 UHF
AIR 15 477.25 UHF
AIR 16 483.25 UHF
AIR 17 489.25 UHF
AIR 18 495.25 UHF
AIR 19 501.25 UHF
AIR 20 507.25 UHF
AIR 21 513.25 UHF
AIR 22 519.25 UHF
AIR 23 525.25 UHF
AIR 24 531.25 UHF
AIR 25 537.25 UHF
AIR 26 543.25 UHF
AIR 27 549.25 UHF
AIR 28 555.25 UHF
AIR 29 561.25 UHF
AIR 30 567.25 UHF
AIR 31 573.25 UHF
AIR 32 579.25 UHF
AIR 33 585.25 UHF
AIR 34 591.25 UHF
AIR 35 597.25 UHF
AIR 36 603.25 UHF
AIR 37 609.25 UHF
AIR 38 615.25 UHF
AIR 39 621.25 UHF
AIR 40 627.25 UHF
AIR 41 633.25 UHF
AIR 42 639.25 UHF
AIR 43 645.25 UHF
AIR 44 651.25 UHF
AIR 45 657.25 UHF
AIR 46 663.25 UHF
AIR 47 669.25 UHF
AIR 48 675.25 UHF
AIR 49 681.25 UHF
AIR 50 687.25 UHF
AIR 51 693.25 UHF
AIR 52 699.25 UHF
AIR 53 705.25 UHF
AIR 54 711.25 UHF
AIR 55 717.25 UHF
AIR 56 723.25 UHF
AIR 57 729.25 UHF
AIR 58 735.25 UHF
AIR 59 741.25 UHF
AIR 60 747.25 UHF
AIR 61 753.25 UHF
AIR 62 759.25 UHF
AIR 63 765.25 UHF
AIR 64 771.25 UHF
AIR 65 777.25 UHF
AIR 66 783.25 UHF
AIR 67 789.25 UHF
AIR 68 795.25 UHF
AIR 69 801.25 UHF
AIR 70 807.25 UHF (no longer assigned to TV)
AIR 71 813.25 UHF (no longer assigned to TV)
AIR 72 819.25 UHF (no longer assigned to TV)
AIR 73 825.25 UHF (no longer assigned to TV)
AIR 74 831.25 UHF (no longer assigned to TV)
AIR 75 837.25 UHF (no longer assigned to TV)
AIR 76 843.25 UHF (no longer assigned to TV)
AIR 77 849.25 UHF (no longer assigned to TV)
AIR 78 855.25 UHF (no longer assigned to TV)
AIR 79 861.25 UHF (no longer assigned to TV)
AIR 80 867.25 UHF (no longer assigned to TV)
AIR 81 873.25 UHF (no longer assigned to TV)
AIR 82 879.25 UHF (no longer assigned to TV)
AIR 83 885.25 UHF (no longer assigned to TV)
Common EIA STD IRC HRC Band
-------------------------------------------------------------------------------
-
CATV T-7 7.00 SUB
CATV T-8 13.00 SUB
CATV T-9 19.00 SUB
CATV T-10 25.00 SUB
CATV T-11 31.00 SUB
CATV T-12 37.00 SUB
CATV T-13 43.00 SUB
CATV T-14 49.00 SUB
CATV 2-1 49.25 48.00 LO
CATV 2 02 55.25 55.25 54.00 LO
CATV 3 03 61.25 61.25 60.00 LO
CATV 4 04 67.25 67.25 66.00 LO
CATV A-8 4+ 01 73.25 72.00 LO
CATV A-7 5 05 79.25 78.00 LO
CATV A-6 6 06 85.25 84.00 LO
CATV A-5 95 91.25 90.00 91.25 MID
CATV A-4 96 97.25 96.00 97.25 MID
CATV A-3 97 103.25 102.00 103.25 MID
CATV A-2 98 109.25 108.00 109.25 MID
CATV A-1 99 115.25 114.00 115.25 MID
CATV 7 07 175.25 175.25 174.00 HI
CATV 8 08 181.25 181.25 180.00 HI
CATV 9 09 187.25 187.25 186.00 HI
CATV 10 10 193.25 193.25 192.00 HI
CATV 11 11 199.25 199.25 198.00 HI
CATV 12 12 205.25 205.25 204.00 HI
CATV 13 13 211.25 211.25 210.00 HI
CATV A 14 121.25 121.25 120.00 MID
CATV B 15 127.25 127.25 126.00 MID
CATV C 16 133.25 133.25 132.00 MID
CATV D 17 139.25 139.25 138.00 MID
CATV E 18 145.25 145.25 144.00 MID
CATV F 19 151.25 151.25 150.00 MID
CATV G 20 157.25 157.25 156.00 MID
CATV H 21 163.25 163.25 162.00 MID
CATV I 22 169.25 169.25 168.00 MID
CATV J 23 217.25 217.25 216.00 SUPER
CATV K 24 223.25 223.25 222.00 SUPER
CATV L 25 229.25 229.25 228.00 SUPER
CATV M 26 235.25 235.25 234.00 SUPER
CATV N 27 241.25 241.25 240.00 SUPER
CATV O 28 247.25 247.25 246.00 SUPER
CATV P 29 253.25 253.25 252.00 SUPER
CATV Q 30 259.25 259.25 258.00 SUPER
CATV R 31 265.25 265.25 264.00 SUPER
CATV S 32 271.25 271.25 270.00 SUPER
CATV T 33 277.25 277.25 276.00 SUPER
CATV U 34 283.25 283.25 282.00 SUPER
CATV V 35 289.25 289.25 288.00 SUPER
CATV W 36 295.25 295.25 294.00 SUPER
CATV AA 37 301.25 301.25 300.00 HYPER
CATV BB 38 307.25 307.25 306.00 HYPER
CATV CC 39 313.25 313.25 312.00 HYPER
CATV DD 40 319.25 319.25 318.00 HYPER
CATV EE 41 325.25 325.25 324.00 HYPER
CATV FF 42 331.25 331.25 330.00 HYPER
CATV GG 43 337.25 337.25 336.00 HYPER
CATV HH 44 343.25 343.25 342.00 HYPER
CATV II 45 349.25 349.25 348.00 HYPER
CATV JJ 46 355.25 355.25 354.00 HYPER
CATV KK 47 361.25 361.25 360.00 HYPER
CATV LL 48 367.25 367.25 366.00 HYPER
CATV MM 49 373.25 373.25 372.00 HYPER
CATV NN 50 379.25 379.25 378.00 HYPER
CATV OO 51 385.25 385.25 384.00 HYPER
CATV PP 52 391.25 391.25 390.00 HYPER
CATV QQ 53 397.25 397.25 396.00 HYPER
CATV RR 54 403.25 403.25 402.00 HYPER
CATV SS 55 409.25 409.25 408.00 HYPER
CATV TT 56 415.25 415.25 414.00 HYPER
CATV UU 57 421.25 421.25 420.00 HYPER
CATV VV 58 427.25 427.25 426.00 HYPER
CATV WW 59 433.25 433.25 432.00 HYPER
CATV XX 60 439.25 439.25 438.00 HYPER
CATV YY 61 445.25 445.25 444.00 HYPER
CATV ZZ 62 451.25 451.25 450.00 HYPER
CATV AAA 63 457.25 457.25 456.00 HYPER
CATV BBB 64 463.25 463.25 462.00 HYPER
CATV CCC 65 469.25 469.25 468.00 HYPER
CATV DDD 66 475.25 475.25 474.00 HYPER
CATV EEE 67 481.25 481.25 480.00 HYPER
CATV FFF 68 487.25 487.25 486.00 HYPER
CATV GGG 69 493.25 493.25 492.00 HYPER
CATV HHH 70 499.25 499.25 498.00 HYPER
CATV III 71 505.25 505.25 504.00 HYPER
CATV JJJ 72 511.25 511.25 510.00 HYPER
CATV KKK 73 517.25 517.25 516.00 HYPER
CATV LLL 74 523.25 523.25 522.00 HYPER
CATV MMM 75 529.25 529.25 528.00 HYPER
CATV NNN 76 535.25 535.25 534.00 HYPER
CATV OOO 77 541.25 541.25 540.00 HYPER
CATV PPP 78 547.25 547.25 546.00 HYPER
FM 1 88.10 FM
FM 2 88.30 FM
FM 3 88.50 FM
FM 4 88.70 FM
FM 5 88.90 FM
FM 6 89.10 FM
FM 7 89.30 FM
FM 8 89.50 FM
FM 9 89.70 FM
FM 10 89.90 FM
FM 11 90.10 FM
FM 12 90.30 FM
FM 13 90.50 FM
FM 14 90.70 FM
FM 15 90.90 FM
FM 16 91.10 FM
FM 17 91.30 FM
FM 18 91.50 FM
FM 19 91.70 FM
FM 20 91.90 FM
FM 21 92.10 FM
FM 22 92.30 FM
FM 23 92.50 FM
FM 24 92.70 FM
FM 25 92.90 FM
FM 26 93.10 FM
FM 27 93.30 FM
FM 28 93.50 FM
FM 29 93.70 FM
FM 30 93.90 FM
FM 31 94.10 FM
FM 32 94.30 FM
FM 33 94.50 FM
FM 34 94.70 FM
FM 35 94.90 FM
FM 36 95.10 FM
FM 37 95.30 FM
FM 38 95.50 FM
FM 39 95.70 FM
FM 40 95.90 FM
FM 41 96.10 FM
FM 42 96.30 FM
FM 43 96.50 FM
FM 44 96.70 FM
FM 45 96.90 FM
FM 46 97.10 FM
FM 47 97.30 FM
FM 48 97.50 FM
FM 49 97.70 FM
FM 50 97.90 FM
FM 51 98.10 FM
FM 52 98.30 FM
FM 53 98.50 FM
FM 54 98.70 FM
FM 55 98.90 FM
FM 56 99.10 FM
FM 57 99.30 FM
FM 58 99.50 FM
FM 59 99.70 FM
FM 60 99.90 FM
FM 61 100.10 FM
FM 62 100.30 FM
FM 63 100.50 FM
FM 64 100.70 FM
FM 65 100.90 FM
FM 66 101.10 FM
FM 67 101.30 FM
FM 68 101.50 FM
FM 69 101.70 FM
FM 70 101.90 FM
FM 71 102.10 FM
FM 72 102.30 FM
FM 73 102.50 FM
FM 74 102.70 FM
FM 75 102.90 FM
FM 76 103.10 FM
FM 77 103.30 FM
FM 78 103.50 FM
FM 79 103.70 FM
FM 80 103.90 FM
FM 81 104.10 FM
FM 82 104.30 FM
FM 83 104.50 FM
FM 84 104.70 FM
FM 85 104.90 FM
FM 86 105.10 FM
FM 87 105.30 FM
FM 88 105.50 FM
FM 89 105.70 FM
FM 90 105.90 FM
FM 91 106.10 FM
FM 92 106.30 FM
FM 93 106.50 FM
FM 94 106.70 FM
FM 95 106.90 FM
FM 96 107.10 FM
FM 97 107.30 FM
FM 98 107.50 FM
FM 98 107.70 FM
FM 100 107.90 FM
Andy Davenport
Harvey Mudd College
Andy@HMCVAX.Claremont.Edu