Goto Section: 22.625 | 22.651 | Table of Contents

FCC 22.627
Revised as of October 1, 2006
Goto Year:2005 | 2007
Sec.  22.627   Effective radiated power limits.

   The effective radiated power (ERP) of transmitters operating on the channels
   listed in  Sec. 22.621 must not exceed the limits in this section.

   (a) Maximum ERP. The ERP must not exceed the applicable limits in this
   paragraph under any circumstances.


------------------------------------------------------------------------
                                                             Maximum ERP
                   Frequency range (MHz)                       (watts)
------------------------------------------------------------------------
470-512....................................................         1000
928-929....................................................           50
932-933....................................................           30
941-942....................................................          600
952-960....................................................          150
------------------------------------------------------------------------

   (b) 470–512 MHz limits. The purpose of the rules in paragraphs (b)(1)
   through (b)(3) of this section is to reduce the likelihood that interference
   to television receiption from public mobile operations on these channels
   will occur. The protected TV station locations specified in this section are
   the locations of record as of September 1974, and these do not change even
   though the TV stations may have been subsequently relocated.

   (1) Co-channel protection. The ERP of control transmitters must not exceed
   the limits in the tables in paragraphs (b)(1)(ii) and (b)(1)(iii) of this
   section. The limits depend upon the height above average terrain of the
   control transmitter antenna and the distance between the control transmitter
   and the nearest protected TV station location in paragraph (b)(1)(i) of this
   section.

   (i) The protected TV station locations are as follows (all coordinates are
   referenced to North American Datum 1983 (NAD83)):


------------------------------------------------------------------------
                                                Protected TV station
    Control transmitter frequency range               location
------------------------------------------------------------------------
470-476 MHz...............................  Jacksonville, IL,
                                             39 °45[min]52.2[sec] N.
                                             Lat.
                                             90 °30[min]29.5[sec] W.
                                             Long.
                                            Mt. Pleasant, MI,
                                             43 °34[min]24.1[sec] N.
                                             Lat.
                                             84 °46[min]21.1[sec] W.
                                             Long.
476-482 MHz...............................  Oxford, OH,
482-488 MHz...............................   39 °30[min]26.2[sec] N.
488-494 MHz...............................   Lat. 84 °44[min]8.8[sec]
494-500 MHz...............................   W. Long.
500-506 MHz...............................  Washington, DC,
506-512 MHz...............................   38 °57[min]17.4[sec] N.
                                             Lat.
                                             77 °00[min]15.9[sec] W.
                                             Long.
                                            Champaign, IL,
                                             40 °04[min]11.1[sec] N.
                                             Lat.
                                             87 °54[min]45.1[sec] W.
                                             Long.
                                            Madison, WI,
                                             43 °03[min]01.0[sec] N.
                                             Lat.
                                             89 °29[min]15.4[sec] W.
                                             Long.
                                            Parkersburg, WV,
                                             39 °20[min]50.3[sec] N.
                                             Lat.
                                             81 °33[min]55.5[sec] W.
                                             Long.
                                            Fort Wayne, IN,
                                             41 °05[min]35.2[sec] N.
                                             Lat.
                                             85 °10[min]41.9[sec] W.
                                             Long.
                                            Lancaster, PA,
                                             40 °15[min]45.3[sec] N.
                                             Lat.
                                             76 °27[min]47.9[sec] W.
                                             Long.
                                            South Bend, IN,
                                             41 °36[min]26.2[sec] N.
                                             Lat.
                                             86 °27[min]48.1[sec] W.
                                             Long.
                                            Philadelphia, PA,
                                             40 °02[min]30.4[sec] N.
                                             Lat.
                                             75 °14[min]22.6[sec] W.
                                             Long.
                                            None.
                                            Johnstown, PA,
                                             40 °19[min]47.3[sec] N.
                                             Lat.
                                             78 °53[min]44.1[sec] W.
                                             Long.
                                            Washington, DC,
                                             38 °57[min]49.4[sec] N.
                                             Lat.
                                             77 °06[min]16.9[sec] W.
                                             Long.
                                            Waterbury, CT,
                                             41 °31[min]2.3[sec] N.
                                             Lat.
                                             73 °00[min]58.4[sec] W.
                                             Long.
------------------------------------------------------------------------

   (ii) Table E–3 and E–4 apply to control transmitters in the New
   York-Northeastern New Jersey and Cleveland urban areas that transmit on
   channels in the 476–482 MHz range and to control transmitters in the Detroit
   urban area that transmit on channels in the 482–488 MHz range.

   (iii) Tables E–5 and E–6 apply to all control transmitters except those to
   which Tables E–3 and E–4 apply.

   (2) Adjacent channel protection. The ERP of control transmitters must not
   exceed the limits in Table E–7. The limits depend upon the height above
   average terrain of the control transmitter antenna and the distance between
   the control transmitter and the nearest protected TV station location listed
   in this paragraph. The protected TV station locations are as follows (all
   coordinates are referenced to North American Datum 1983 (NAD83)):


------------------------------------------------------------------------
   Control transmitter frequency       Protected TV station        TV
               range                         location            channel
------------------------------------------------------------------------
470-476 MHz.......................  Hanover, NH,                    (15)
                                     43 °42[min]30.3[sec]
                                     N. Lat.
                                     72 °09[min]14.3[sec]
                                     W. Long..
                                    Madison, WI,                    (15)
                                     43 °03[min]01.0[sec]
                                     N. Lat.
                                     89 °29[min]15.4[sec]
                                     W. Long..
                                    Champaign, IL,                  (15)
                                     40 °04[min]11.1[sec]
                                     N. Lat.
                                     87 °54[min]45.1[sec]
                                     W. Long..
                                    San Diego, CA,                  (15)
                                     32 °41[min]48.2[sec]
                                     N. Lat.
                                     116 °56[min]13.1[sec]
                                     W. Long..
                                    Lancaster, PA,                  (15)
                                     40 °15[min]45.3[sec]
                                     N. Lat.
                                     76 °27[min]47.9[sec]
                                     W. Long..
                                    Parkersburg, WV,                (15)
                                     39 °20[min]50.3[sec]
                                     N. Lat.
                                     81 °33[min]55.5[sec]
                                     W. Long..
476-482 MHz.......................  South Bend, IN,                 (16)
                                     41 °36[min]26.2[sec]
                                     N. Lat.
                                     86 °27[min]48.1[sec]
                                     W. Long..
                                    Pittsburgh, PA,                 (16)
                                     40 °26[min]46.2[sec]
                                     N. Lat.
                                     79 °57[min]50.2[sec]
                                     W. Long..
                                    Mt. Pleasant, MI,               (14)
                                     43 °34[min]24.1[sec]
                                     N. Lat.
                                     84 °46[min]21.1[sec]
                                     W. Long..
                                    Scranton, PA,                   (16)
                                     41 °10[min]58.3[sec]
                                     N. Lat.
                                     75 °52[min]19.7[sec]
                                     W. Long..
482-488 MHz.......................  Hanover, NH,                    (15)
                                     43 °42[min]30.3[sec]
                                     N. Lat.
                                     72 °09[min]14.3[sec]
                                     W. Long..
                                    Fort Wayne, IN,                 (15)
                                     41 °05[min]35.2[sec]
                                     N. Lat.
                                     85 °10[min]41.9[sec]
                                     W. Long..
488-494 MHz.......................  Salisbury, MD,                  (16)
                                     38 °24[min]15.4[sec]
                                     N. Lat.
                                     75 °34[min]43.7[sec]
                                     W. Long..
494-500 MHz.......................  Philadelphia, PA,               (17)
                                     40 °02[min]30.4[sec]
                                     N. Lat.
                                     75 °14[min]22.6[sec]
                                     W. Long..
500-506 MHz.......................  Washington, DC,                 (20)
                                     38 °57[min]17.4[sec]
                                     N. Lat.
                                     77 °00[min]15.9[sec]
                                     W. Long..
506-512 MHz.......................  Harrisburg, PA,                 (21)
                                     40 °20[min]44.3[sec]
                                     N. Lat.
                                     76 °52[min]07.9[sec]
                                     W. Long..
------------------------------------------------------------------------

   (c) Los Angeles area. This paragraph applies only to control transmitters in
   the Los Angeles urban area that utilize an antenna height of 457 or more
   meters (1500 or more feet) above mean sea level. The ERP of such
   transmitters must not exceed the following limits:


------------------------------------------------------------------------
                        Antenna height                             ERP
------------------------------------------------------------------------
                     AMSL in meters (feet)                       (Watts)
------------------------------------------------------------------------
457 (1500) to 610 (2000)......................................       155
611 (2001) to 762 (2500)......................................       100
763 (2501) to 914 (3000)......................................        70
915 (3001) to 1067 (3500).....................................        50
1068 (3501) to 1219 (4000)....................................        40
1220 (4001) to 1372 (4500)....................................        30
1373 (4501) and above.........................................        25
------------------------------------------------------------------------

                                    Table E-3_Maximum ERP (Watts) for Control T
ransmitters (HAAT 152 Meters or Less)
-------------------------------------------------------------------------------
-------------------------------------------------------------------------

   Antenna height above average terrain in meters (feet)
                                                               ----------------
-------------------------------------------------------------------------
    Distance to protected TV station in kilometers (miles)         15       30
      46       61       76       91      107      122      137      152
                                                                  (50)    (100)
    (150)    (200)    (250)    (300)    (350)    (400)    (450)    (500)
-------------------------------------------------------------------------------
-------------------------------------------------------------------------
209 (130).....................................................     1000     100
0     1000     1000     1000     1000     1000     1000     1000     1000
201 (125).....................................................     1000     100
0     1000     1000     1000     1000     1000      850      750      725
193 (120).....................................................     1000     100
0     1000     1000      900      750      675      600      550      500
185 (115).....................................................     1000     100
0      800      725      600      525      475      425      375      350
177 (110).....................................................      850      70
0      600      500      425      375      325      300      275      225
169 (105).....................................................      600      47
5      400      325      275      250      225      200      175      150
161 (100).....................................................      400      32
5      275      225      175      150      140      125      110      100
153 (95)......................................................      275      22
5      175      125      110       95       80       70       60       50
145 (90)......................................................      175      12
5      100       75       50  .......  .......  .......  .......  .......
-------------------------------------------------------------------------------
-------------------------------------------------------------------------
See  Sec.  22.627(b)(1)(ii). This table is for antenna heights of 152 meters (500 fe
et) or less above average terrain. For antenna heights between those
  in the table, use the next higher antenna height. For distances between those
 in the table, use the next lower distance.

               Table E-4_Maximum ERP (Watts) for Control Transmitters (HAAT Mor
e Than 152 Meters)
-------------------------------------------------------------------------------
---------------------------------
                                                               Antenna height a
bove average terrain in meters

    (feet)
  Distance to protected TV station in kilometers (miles)   --------------------
---------------------------------
                                                              152      305
 457      610      762      914
                                                             (500)    (1000)
(1500)   (2000)   (2500)   (3000)
-------------------------------------------------------------------------------
---------------------------------
209 (130).................................................     1000      447
   219      117       71       46
193 (120).................................................      500      209
    95       50       30       19
177 (110).................................................      225       91
    35       19       11        8
161 (100).................................................      100       30
    10        5        3        2
153 (95)..................................................       50       13
     5        3        2        1
-------------------------------------------------------------------------------
---------------------------------
See  Sec.  22.627(b)(1)(ii). This table is for antenna heights of more than 152 mete
rs (500 feet) above average
  terrain. For intermediate values of height and/or distance, use linear interp
olation to obtain the maximum
  permitted ERP.

                                    Table E-5_Maximum ERP (Watts) for Control T
ransmitters (HAAT 152 Meters or Less)
-------------------------------------------------------------------------------
-------------------------------------------------------------------------

   Antenna Height Above Average Terrain in meters (feet)
                                                               ----------------
-------------------------------------------------------------------------
    Distance to protected TV station in kilometers (miles)         15       30
      46       61       76       91      107      122      137      152
                                                                  (50)    (100)
    (150)    (200)    (250)    (300)    (350)    (400)    (450)    (500)
-------------------------------------------------------------------------------
-------------------------------------------------------------------------
261 (162).....................................................     1000     100
0     1000     1000     1000     1000     1000     1000     1000     1000
257 (160).....................................................     1000     100
0     1000     1000     1000     1000     1000     1000     1000      800
249 (155).....................................................     1000     100
0     1000     1000     1000      875      775      700      625      575
241 (150).....................................................     1000     100
0      950      775      725      625      550      500      450      400
233 (145).....................................................      850      75
0      650      575      500      440      400      350      320      300
225 (140).....................................................      600      57
5      465      400      350      300      275      250      230      225
217 (135).....................................................      450      40
0      335      300      255      240      200      185      165      150
209 (130).....................................................      350      30
0      245      200      185      160      145      125      120      100
201 (125).....................................................      225      20
0      170      150      125      110      100       90       80       75
193 (120).....................................................      175      15
0      125      105       90       80       70       60       55       50
-------------------------------------------------------------------------------
-------------------------------------------------------------------------
See  Sec.  22.627(b)(1)(iii). This table applies for antenna heights of 152 meters (
500 feet) or less above average terrain. For antenna heights between
  those in the table, use the next higher antenna height. For distances between
 those in the table, use the next lower distance.

               Table E-6_Maximum ERP (Watts) for Control Transmitters (HAAT Mor
e Than 152 Meters)
-------------------------------------------------------------------------------
---------------------------------
                                                               Antenna height a
bove average terrain in meters

    (feet)
  Distance to protected TV station in kilometers (miles)   --------------------
---------------------------------
                                                              152      305
 457      610      762      914
                                                             (500)    (1000)
(1500)   (2000)   (2500)   (3000)
-------------------------------------------------------------------------------
---------------------------------
261 (162).................................................     1000      501
   282      170      110       71
241 (150).................................................      400      209
   110       60       36       23
225 (140).................................................      225      102
    50       28       16       10
209 (130).................................................      100       48
    21       11        7        5
193 (120).................................................       50       19
     9        5        3       2
-------------------------------------------------------------------------------
---------------------------------
See  Sec.  22.627(b)(1)(iii). This table is for antenna heights of more than 152 met
ers (500 feet) above average
  terrain. For intermediate values of height and/or distance, use linear interp
olation to obtain the maximum
  permitted ERP.

                             Table E-7_Maximum ERP (Watts) for Control Transmit
ters
-------------------------------------------------------------------------------
---------------------------------
                                              Antenna height above average terr
ain in meters (feet)
    Distance to protected TV    -----------------------------------------------
---------------------------------
 station in kilometers (miles)      30       46       61       76       91
 107      122      137      152
                                  (100)    (150)    (200)    (250)    (300)
(350)    (400)    (450)    (500)
-------------------------------------------------------------------------------
---------------------------------
108 (67).......................     1000     1000     1000     1000     1000
  1000     1000     1000     1000
106 (66).......................     1000     1000     1000     1000     1000
  1000     1000     1000      750
105 (65).......................     1000     1000     1000     1000     1000
  1000      825      650      600
103 (64).......................     1000     1000     1000     1000     1000
   775      625      500      400
101 (63).......................     1000     1000     1000     1000      440
   400      350      320      300
100 (62).......................     1000     1000     1000      525      375
   250      200      150      125
98 (61)........................     1000      700      450      250      200
   125      100       75       50
97 (60)........................     1000      425      225      125      100
    75       50  .......  .......
-------------------------------------------------------------------------------
---------------------------------
See  Sec.  22.627(b)(2). This table applies to control transmitters in the Boston, C
hicago, Cleveland, Detroit,
  Los Angeles, New York-Northeastern New Jersey, Philadelphia, Pittsburgh and W
ashington, DC urban areas. This
  table is for antenna heights of 152 meters (500 feet) or less above average t
errain. For antenna heights
  between those in the table, use the next higher antenna height. For distances
 between those in the table, use
  the next lower distance.

   [ 59 FR 59507 , Nov. 17, 1994;  60 FR 9890 , Feb. 22, 1995; as amended at  63 FR 68946 , Dec. 14, 1998]

470–512 MHz Trunked Mobile Operation


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