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.................................................... 1000928-929.................................................... 50932-933.................................................... 30941-942.................................................... 600952-960.................................................... 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[deg]45[min]52.2[sec] N. Lat.
90[deg]30[min]29.5[sec] W.
Long.
Mt. Pleasant, MI,
43[deg]34[min]24.1[sec] N. Lat.
84[deg]46[min]21.1[sec] W.
Long.476-482 MHz........................... Oxford, OH,482-488 MHz........................... 39[deg]30[min]26.2[sec] N. Lat.488-494 MHz........................... 84[deg]44[min]8.8[sec] W. Long.494-500 MHz........................... Washington, DC,500-506 MHz........................... 38[deg]57[min]17.4[sec] N. Lat.506-512 MHz........................... 77[deg]00[min]15.9[sec] W.
Long.
Champaign, IL,
40[deg]04[min]11.1[sec] N. Lat.
87[deg]54[min]45.1[sec] W.
Long.
Madison, WI,
43[deg]03[min]01.0[sec] N. Lat.
89[deg]29[min]15.4[sec] W.
Long.
Parkersburg, WV,
39[deg]20[min]50.3[sec] N. Lat.
81[deg]33[min]55.5[sec] W.
Long.
Fort Wayne, IN,
41[deg]05[min]35.2[sec] N. Lat.
85[deg]10[min]41.9[sec] W.
Long.
Lancaster, PA,
40[deg]15[min]45.3[sec] N. Lat.
76[deg]27[min]47.9[sec] W.
Long.
South Bend, IN,
41[deg]36[min]26.2[sec] N. Lat.
86[deg]27[min]48.1[sec] W.
Long.
Philadelphia, PA,
40[deg]02[min]30.4[sec] N. Lat.
75[deg]14[min]22.6[sec] W.
Long.
None.
Johnstown, PA,
40[deg]19[min]47.3[sec] N. Lat.
78[deg]53[min]44.1[sec] W.
Long.
Washington, DC,
38[deg]57[min]49.4[sec] N. Lat.
77[deg]06[min]16.9[sec] W.
Long.
Waterbury, CT,
41[deg]31[min]2.3[sec] N. Lat.
73[deg]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[deg]42[min]30.3[sec]
N. Lat.
72[deg]09[min]14.3[sec]
W. Long..
Madison, WI, (15)
43[deg]03[min]01.0[sec]
N. Lat.
89[deg]29[min]15.4[sec]
W. Long..
Champaign, IL, (15)
40[deg]04[min]11.1[sec]
N. Lat.
87[deg]54[min]45.1[sec]
W. Long..
San Diego, CA, (15)
32[deg]41[min]48.2[sec]
N. Lat.
116[deg]56[min]13.1[sec]
W. Long..
Lancaster, PA, (15)
40[deg]15[min]45.3[sec]
N. Lat.
76[deg]27[min]47.9[sec]
W. Long..
Parkersburg, WV, (15)
39[deg]20[min]50.3[sec]
N. Lat.
81[deg]33[min]55.5[sec]
W. Long..476-482 MHz....................... South Bend, IN, (16)
41[deg]36[min]26.2[sec]
N. Lat.
86[deg]27[min]48.1[sec]
W. Long..
Pittsburgh, PA, (16)
40[deg]26[min]46.2[sec]
N. Lat.
79[deg]57[min]50.2[sec]
W. Long..
Mt. Pleasant, MI, (14)
43[deg]34[min]24.1[sec]
N. Lat.
84[deg]46[min]21.1[sec]
W. Long..
Scranton, PA, (16)
41[deg]10[min]58.3[sec]
N. Lat.
75[deg]52[min]19.7[sec]
W. Long..482-488 MHz....................... Hanover, NH, (15)
43[deg]42[min]30.3[sec]
N. Lat.
72[deg]09[min]14.3[sec]
W. Long..
Fort Wayne, IN, (15)
41[deg]05[min]35.2[sec]
N. Lat.
85[deg]10[min]41.9[sec]
W. Long..488-494 MHz....................... Salisbury, MD, (16)
38[deg]24[min]15.4[sec]
N. Lat.
75[deg]34[min]43.7[sec]
W. Long..494-500 MHz....................... Philadelphia, PA, (17)
40[deg]02[min]30.4[sec]
N. Lat.
75[deg]14[min]22.6[sec]
W. Long..500-506 MHz....................... Washington, DC, (20)
38[deg]57[min]17.4[sec]
N. Lat.
77[deg]00[min]15.9[sec]
W. Long..506-512 MHz....................... Harrisburg, PA, (21)
40[deg]20[min]44.3[sec]
N. Lat.
76[deg]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)...................................... 155611 (2001) to 762 (2500)...................................... 100763 (2501) to 914 (3000)...................................... 70915 (3001) to 1067 (3500)..................................... 501068 (3501) to 1219 (4000).................................... 401220 (4001) to 1372 (4500).................................... 301373 (4501) and above......................................... 25------------------------------------------------------------------------
Table E-3--Maximum ERP (Watts) for Control Transmitters (HAAT 152 Meters or Less)--------------------------------------------------------------------------------------------------------------------------------------------------------
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
15 (50) (100) (150) (200) (250) (300) (350) (400) (450) (500)--------------------------------------------------------------------------------------------------------------------------------------------------------209 (130)..................................................... 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000201 (125)..................................................... 1000 1000 1000 1000 1000 1000 1000 850 750 725193 (120)..................................................... 1000 1000 1000 1000 900 750 675 600 550 500185 (115)..................................................... 1000 1000 800 725 600 525 475 425 375 350177 (110)..................................................... 850 700 600 500 425 375 325 300 275 225169 (105)..................................................... 600 475 400 325 275 250 225 200 175 150161 (100)..................................................... 400 325 275 225 175 150 140 125 110 100153 (95)...................................................... 275 225 175 125 110 95 80 70 60 50145 (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)----------------------------------------------------------------------------------------------------------------
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 46193 (120)................................................. 500 209 95 50 30 19177 (110)................................................. 225 91 35 19 11 8161 (100)................................................. 100 30 10 5 3 2153 (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 meters (feet)
-----------------------------------------------------------------------------------------
Distance to protected TV station in kilometers (miles) 30 46 61 76 91 107 122 137 152
15 (50) (100) (150) (200) (250) (300) (350) (400) (450) (500)--------------------------------------------------------------------------------------------------------------------------------------------------------261 (162)..................................................... 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000257 (160)..................................................... 1000 1000 1000 1000 1000 1000 1000 1000 1000 800249 (155)..................................................... 1000 1000 1000 1000 1000 875 775 700 625 575241 (150)..................................................... 1000 1000 950 775 725 625 550 500 450 400233 (145)..................................................... 850 750 650 575 500 440 400 350 320 300225 (140)..................................................... 600 575 465 400 350 300 275 250 230 225217 (135)..................................................... 450 400 335 300 255 240 200 185 165 150209 (130)..................................................... 350 300 245 200 185 160 145 125 120 100201 (125)..................................................... 225 200 170 150 125 110 100 90 80 75193 (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)----------------------------------------------------------------------------------------------------------------
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 71241 (150)................................................. 400 209 110 60 36 23225 (140)................................................. 225 102 50 28 16 10209 (130)................................................. 100 48 21 11 7 5193 (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----------------------------------------------------------------------------------------------------------------
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 1000106 (66)....................... 1000 1000 1000 1000 1000 1000 1000 1000 750105 (65)....................... 1000 1000 1000 1000 1000 1000 825 650 600103 (64)....................... 1000 1000 1000 1000 1000 775 625 500 400101 (63)....................... 1000 1000 1000 1000 440 400 350 320 300100 (62)....................... 1000 1000 1000 525 375 250 200 150 12598 (61)........................ 1000 700 450 250 200 125 100 75 5097 (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 Sec. 22.651 470-512 MHz channels for trunked mobile operation.
The following channels are allocated for assignment to transmitters providing trunked public mobile service within the specified urban areas. All channels have a bandwidth of 20 kHz and are designated by their center frequencies in MegaHertz.
Houston
488.0125........................ 491.0125 488.0875.......... 491.0875488.0375........................ 491.0375 488.1125.......... 491.1125488.0625........................ 491.0625 488.1375.......... 491.1375
New York-Northern New Jersey
473.0125........................ 479.0125 473.1625.......... 479.1625473.0375........................ 479.0375 473.1875.......... 479.1875473.0625........................ 479.0625 473.2125.......... 479.2125473.0875........................ 479.0875 473.2375.......... 479.2375473.1125........................ 479.1125 473.2625.......... 479.2625473.1375........................ 479.1375 473.2875.......... 479.2875
[59 FR 59507, Nov. 17, 1994; 60 FR 9891, Feb. 22, 1995]