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:
----------------------------------------------------------------------------------------------------------------
Control transmitter frequency range Protected TV station location
----------------------------------------------------------------------------------------------------------------
470-476 MHz...................................................... Jacksonville, IL 39 deg.45'52' 90
deg.30'29'.
Mt. Pleasant, MI 43 deg.34'24' 84
deg.46'21'.
Oxford, OH 39 deg.30'26' 84 deg.44'09'.
Washington, DC 38 deg.57'17' 77 deg.00'17'.
476-482 MHz...................................................... Champaign, IL 40 deg.04'11' 87 deg.54'45'.
Madison, WI 43 deg.03'01' 89 deg.29'15'.
Parkersburg, WV 39 deg.20'50' 81
deg.33'56'.
Fort Wayne, IN 41 deg.05'35' 85 deg.10'42'.
Lancaster, PA 40 deg.15'45' 76 deg.27'49'.
482-488 MHz...................................................... South Bend, IN 41 deg.36'26' 86 deg.27'48'.
488-494 MHz...................................................... Philadelphia, PA 40 deg.02'30' 75
deg.14'24'.
494-500 MHz...................................................... None.
500-506 MHz...................................................... Johnstown, PA 40 deg.19'47' 78 deg.53'45'.
506-512 MHz...................................................... Washington, DC 38 deg.57'49' 77 deg.06'18'.
[[Page 166]]
Waterbury, CT 41 deg.31'02' 73 deg.01'00'.
----------------------------------------------------------------------------------------------------------------
(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:
------------------------------------------------------------------------
Control transmitter frequency Protected TV station TV
range location channel
------------------------------------------------------------------------
470-476 MHz: Hanover, NH 43 deg.42'30' (15)
72 deg.09'16'.
Madison, WI 43 deg.03'01' (15)
89 deg.29'15'.
Champaign, IL 40 (15)
deg.04'11' 87 deg.54'45'.
San Diego, CA 32 (15)
deg.41'48' 116 deg.56'10'.
Lancaster, PA 40 (15)
deg.15'45' 76 deg.27'49'.
Parkersburg, WV 39 (15)
deg.20'50' 81 deg.33''56'.
476-482 MHz: South Bend, IN 41 (16)
deg.36'20' 86 deg.12'44'.
Pittsburgh, PA 40 (16)
deg.26'46' 79 deg.57'51'.
Mt. Pleasant, MI 43 (14)
deg.34'24' 84 deg.46'21'.
Scranton, PA 41 deg.10'58' (16)
75 deg.52'21'.
482-488 MHz: Hanover, NH 43 deg.42'30' (15)
72 deg.09'16'.
Fort Wayne, IN 41 (15)
deg.05'35' 85 deg.10'42'.
488-494 MHz: Salisbury, MD 38 (16)
deg.24'15' 75 deg.34'45'.
494-500 MHz: Philadelphia, PA 40 (17)
deg.02'30' 75 deg.14'24'.
500-506 MHz: Washington, DC 38 (20)
deg.57'49' 77 deg.06'18'.
506-512 MHz: Harrisburg, PA 40 (21)
deg.20'44' 76 deg.52'09'.
------------------------------------------------------------------------
(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)
----------------------------------------------------------------------------------------------------------------------------
----------------------------
Antenna height above average terrain in me
ters (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 1000 1000 1000 1000 1000 100
0 1000 1000 1000
201 (125)..................................................... 1000 1000 1000 1000 1000 1000 100
0 850 750 725
193 (120)..................................................... 1000 1000 1000 1000 900 750 67
5 600 550 500
185 (115)..................................................... 1000 1000 800 725 600 525 47
5 425 375 350
177 (110)..................................................... 850 700 600 500 425 375 32
5 300 275 225
169 (105)..................................................... 600 475 400 325 275 250 22
5 200 175 150
161 (100)..................................................... 400 325 275 225 175 150 14
0 125 110 100
153 (95)...................................................... 275 225 175 125 110 95 8
0 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 an
tenna heights between those
in the table, use the next higher antenna height. For distances between those in the table, use the next lower distance.
[[Page 167]]
Table E-4.--Maximum ERP (Watts) for Control Transmitters (HAAT More Than 152 Meters)
----------------------------------------------------------------------------------------------------------------
Antenna height above 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 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)
----------------------------------------------------------------------------------------------------------------------------
----------------------------
Antenna Height Above Average Terrain in me
ters (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 1000 1000 1000 1000 1000 100
0 1000 1000 1000
257 (160)..................................................... 1000 1000 1000 1000 1000 1000 100
0 1000 1000 800
249 (155)..................................................... 1000 1000 1000 1000 1000 875 77
5 700 625 575
241 (150)..................................................... 1000 1000 950 775 725 625 55
0 500 450 400
233 (145)..................................................... 850 750 650 575 500 440 40
0 350 320 300
225 (140)..................................................... 600 575 465 400 350 300 27
5 250 230 225
217 (135)..................................................... 450 400 335 300 255 240 20
0 185 165 150
209 (130)..................................................... 350 300 245 200 185 160 14
5 125 120 100
201 (125)..................................................... 225 200 170 150 125 110 10
0 90 80 75
193 (120)..................................................... 175 150 125 105 90 80 7
0 60 55 50
----------------------------------------------------------------------------------------------------------------------------
----------------------------
AAAAAASee Sec. 22.627(b)(1)(iii). This table applies for antenna heights of 152 meters (500 feet) or less above average te
rrain. For antenna heights
between those in the table, use the next higher antenna height. For distances between those in the table, use the next low
er distance.
Table E-6.--Maximum ERP (Watts) for Control Transmitters (HAAT More Than 152 Meters)
----------------------------------------------------------------------------------------------------------------
Antenna height above 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
----------------------------------------------------------------------------------------------------------------
AAAAAASee 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
----------------------------------------------------------------------------------------------------------------
Antenna height above average terrain 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, 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.
[[Page 168]]
[ 59 FR 59507 , Nov. 17, 1994; 60 FR 9890 , Feb. 22, 1995]
470-512 MHz Trunked Mobile Operation
CiteFind - See documents on FCC website that
cite this rule
Want to support this service?
Thanks!
Report errors in
this rule. Since these rules are converted to HTML by machine, it's possible errors have been made. Please
help us improve these rules by clicking the Report FCC Rule Errors link to report an error.