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
 
