Goto Section: 22.625 | 22.651 | Table of Contents
FCC 22.627
Revised as of October 1, 2008
Goto Year:2007 |
2009
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.
Frequency range (MHz) Maximum ERP (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)):
Control transmitter frequency range Protected TV station location
470–476 MHz Jacksonville, IL, 39 °45'52.2" N. Lat. 90 °30'29.5" W. Long.
Mt. Pleasant, MI, 43 °34'24.1" N. Lat. 84 °46'21.1" W. Long.
476–482 MHz
482–488 MHz
488–494 MHz
494–500 MHz
500–506 MHz
506–512 MHz Oxford, OH, 39 °30'26.2" N. Lat. 84 °44'8.8" W. Long.
Washington, DC, 38 °57'17.4" N. Lat. 77 °00'15.9" W. Long.
Champaign, IL, 40 °04'11.1" N. Lat. 87 °54'45.1" W. Long.
Madison, WI, 43 °03'01.0" N. Lat. 89 °29'15.4" W. Long.
Parkersburg, WV, 39 °20'50.3" N. Lat. 81 °33'55.5" W. Long.
Fort Wayne, IN, 41 °05'35.2" N. Lat. 85 °10'41.9" W. Long.
Lancaster, PA, 40 °15'45.3" N. Lat. 76 °27'47.9" W. Long.
South Bend, IN, 41 °36'26.2" N. Lat. 86 °27'48.1" W. Long.
Philadelphia, PA, 40 °02'30.4" N. Lat. 75 °14'22.6" W. Long.
None.
Johnstown, PA, 40 °19'47.3" N. Lat. 78 °53'44.1" W. Long.
Washington, DC, 38 °57'49.4" N. Lat. 77 °06'16.9" W. Long.
Waterbury, CT, 41 °31'2.3" N. Lat. 73 °00'58.4" 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 range Protected TV station location TV channel
470–476 MHz Hanover, NH, 43 °42'30.3" N. Lat. 72 °09'14.3" W. Long. (15)
Madison, WI, 43 °03'01.0" N. Lat. 89 °29'15.4" W. Long. (15)
Champaign, IL, 40 °04'11.1" N. Lat. 87 °54'45.1" W. Long. (15)
San Diego, CA, 32 °41'48.2" N. Lat. 116 °56'13.1" W. Long. (15)
Lancaster, PA, 40 °15'45.3" N. Lat. 76 °27'47.9" W. Long. (15)
Parkersburg, WV, 39 °20'50.3" N. Lat. 81 °33'55.5" W. Long. (15)
476–482 MHz South Bend, IN, 41 °36'26.2" N. Lat. 86 °27'48.1" W. Long. (16)
Pittsburgh, PA, 40 °26'46.2" N. Lat. 79 °57'50.2" W. Long. (16)
Mt. Pleasant, MI, 43 °34'24.1" N. Lat. 84 °46'21.1" W. Long. (14)
Scranton, PA, 41 °10'58.3" N. Lat. 75 °52'19.7" W. Long. (16)
482–488 MHz Hanover, NH, 43 °42'30.3" N. Lat. 72 °09'14.3" W. Long. (15)
Fort Wayne, IN, 41 °05'35.2" N. Lat. 85 °10'41.9" W. Long. (15)
488–494 MHz Salisbury, MD, 38 °24'15.4" N. Lat. 75 °34'43.7" W. Long. (16)
494–500 MHz Philadelphia, PA, 40 °02'30.4" N. Lat. 75 °14'22.6" W. Long. (17)
500–506 MHz Washington, DC, 38 °57'17.4" N. Lat. 77 °00'15.9" W. Long. (20)
506–512 MHz Harrisburg, PA, 40 °20'44.3" N. Lat. 76 °52'07.9" W. Long. (21)
(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 Transmitters (HAAT 152 Meters or
Less)
Distance to protected TV station in kilometers (miles) Antenna height above
average terrain in meters (feet)
15
(50) 30
(100) 46
(150) 61
(200) 76
(250) 91
(300) 107
(350) 122
(400) 137
(450) 152
(500)
209 (130) 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000
201 (125) 1000 1000 1000 1000 1000 1000 1000 850 750 725
193 (120) 1000 1000 1000 1000 900 750 675 600 550 500
185 (115) 1000 1000 800 725 600 525 475 425 375 350
177 (110) 850 700 600 500 425 375 325 300 275 225
169 (105) 600 475 400 325 275 250 225 200 175 150
161 (100) 400 325 275 225 175 150 140 125 110 100
153 (95) 275 225 175 125 110 95 80 70 60 50
145 (90) 175 125 100 75 50
See Sec. 22.627(b)(1)(ii). This table is 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–4—Maximum ERP (Watts) for Control Transmitters (HAAT More Than 152
Meters)
Distance to protected TV station in kilometers (miles) Antenna height above
average terrain in meters (feet)
152 (500) 305 (1000) 457 (1500) 610 (2000) 762 (2500) 914 (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
meters (500 feet) above average terrain. For intermediate values of height
and/or distance, use linear interpolation to obtain the maximum permitted
ERP.
Table E–5—Maximum ERP (Watts) for Control Transmitters (HAAT 152 Meters or
Less)
Distance to protected TV station in kilometers (miles) Antenna Height Above
Average Terrain in meters (feet)
15
(50) 30
(100) 46
(150) 61
(200) 76
(250) 91
(300) 107
(350) 122
(400) 137
(450) 152
(500)
261 (162) 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000
257 (160) 1000 1000 1000 1000 1000 1000 1000 1000 1000 800
249 (155) 1000 1000 1000 1000 1000 875 775 700 625 575
241 (150) 1000 1000 950 775 725 625 550 500 450 400
233 (145) 850 750 650 575 500 440 400 350 320 300
225 (140) 600 575 465 400 350 300 275 250 230 225
217 (135) 450 400 335 300 255 240 200 185 165 150
209 (130) 350 300 245 200 185 160 145 125 120 100
201 (125) 225 200 170 150 125 110 100 90 80 75
193 (120) 175 150 125 105 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 More Than 152
Meters)
Distance to protected TV station in kilometers (miles) Antenna height above
average terrain in meters (feet)
152 (500) 305 (1000) 457 (1500) 610 (2000) 762 (2500) 914 (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
meters (500 feet) above average terrain. For intermediate values of height
and/or distance, use linear interpolation to obtain the maximum permitted
ERP.
Table E–7—Maximum ERP (Watts) for Control Transmitters
Distance to protected TV station in kilometers (miles) Antenna height above
average terrain in meters (feet)
30
(100) 46
(150) 61
(200) 76
(250) 91
(300) 107
(350) 122
(400) 137
(450) 152
(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,
Chicago, Cleveland, Detroit, Los Angeles, New York-Northeastern New Jersey,
Philadelphia, Pittsburgh and Washington, DC urban areas. This table is 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.
[ 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
Goto Section: 22.625 | 22.651
Goto Year: 2007 |
2009
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