47 CFR 22.627 - Effective radiated power limits.

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§ 22.627 Effective radiated power limits.
The effective radiated power (ERP) of transmitters operating on the channels listed in § 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 MHz482-488 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)
See § 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.
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
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)
See § 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.
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
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)
See § 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.
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
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)
See § 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.
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
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)
See § 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.
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
[59 FR 59507, Nov. 17, 1994; 60 FR 9890, Feb. 22, 1995; as amended at 63 FR 68946, Dec. 14, 1998]

Title 47 published on 2013-10-01

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  • 2014-02-20; vol. 79 # 34 - Thursday, February 20, 2014
    1. 79 FR 9622 - An Inquiry Into the Commission's Policies and Rules Regarding AM Radio Service Directional Antenna Performance Verification
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      FEDERAL COMMUNICATIONS COMMISSION
      Final rule; announcement of effective date.
      47 CFR 1.30002, 1.30003, 1.30004, 73.875, 73.1675, and 73.1690, are effective February 20, 2014. Applicability date: The applicability date of the amendments to 47 CFR 1.30000, 1.30001, 22.371, 27.63, 73.45, 73.316, 73.685, 73.1692, 73.6025, and 74.1237 published November 5, 2013 (78 FR 66288) is February 20, 2014.
      47 CFR Parts 1, 22, 27, 73, and 74

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Title 47 published on 2013-10-01

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 47 CFR 22 after this date.

  • 2014-03-17; vol. 79 # 51 - Monday, March 17, 2014
    1. 79 FR 14634 - Expanding Access to Mobile Wireless Services Onboard Aircraft
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      FEDERAL COMMUNICATIONS COMMISSION
      Proposed rule; extension of comment period.
      The reply comment period for the proposed rule published January 15, 2014 (79 FR 2615), is extended. Submit reply comments on or before May 16, 2014.
      47 CFR parts 22, 24, 27, 87 and 90