Goto Section: 21.625 | 21.651
FCC 21.627
Revised as of May 5, 2005
Goto Year:2004 |
2006
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
-------------------------------------------------------------------------------
-------------------------------------------------------------------------
AAAAASee Sec. 22.627(b)(1)(iii). This table applies for antenna heights of 152 me
ters (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
-------------------------------------------------------------------------------
---------------------------------
AAAAASee Sec. 22.627(b)(1)(iii). This table is for antenna heights of more than 1
52 meters (500 feet) above
average terrain. For intermediate values of height and/or distance, use linea
r interpolation 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; 63 FR 68946 ,
Dec. 14, 1998]
470-512 MHz Trunked Mobile Operation
Goto Section: 21.625 | 21.651
Goto Year: 2004 |
2006
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