Goto Section: 21.657 | 21.701
FCC 21.659
Revised as of May 5, 2005
Goto Year:2004 |
2006
Sec. 22.659 Effective radiated power limits.
The purpose of the rules in this section, which limit effective
radiated power (ERP), is to reduce the likelihood that interference to
television reception 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.
(a) Maximum ERP. The ERP of base transmitters must not exceed 100
Watts under any circumstances. The ERP of mobile transmitters must not
exceed 60 Watts under any circumstances.
(b) Co-channel protection from base transmitters. The ERP of base
transmitters in the New York-Northeastern New Jersey urban area must
not exceed the limits in the tables referenced in paragraphs (b)(2)
and (b)(3) of this section. The limits depend upon the height above
average terrain of the base transmitter antenna and the distance
between the base transmitter and the nearest protected TV station
location in paragraph (b)(1) of this section.
(1) 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............................ Washington, DC,
38°57[min]17.4[sec] N.
Lat. 77°00[min]15.9[sec]
W. Long.
476-482 MHz............................ Lancaster, PA,
40°15[min]45.3[sec] N.
Lat. 76°27[min]47.9[sec]
W. Long.
------------------------------------------------------------------------
(2) Tables E-8 and E-9 of this section apply to base transmitters in
the New York-Northeastern New Jersey urban area that transmit on
channels in the 476-482 MHz range.
(3) Tables E-10 and E-11 of this section apply to base transmitters in
the New York-Northeastern New Jersey urban area that transmit on
channels in the 470-476 MHz range.
(c) Adjacent channel protection from base transmitters. The ERP of
base transmitters must not exceed the limits in Table E-12 of this
section. The limits depend upon the height above average terrain of
the base transmitter antenna and the distance between the base
transmitter and the nearest protected TV station location specified in
paragraph (c)(1) of this section.
(1) The protected TV station locations are as follows (all coordinates
are referenced to North American Datum 1983 (NAD83)):
------------------------------------------------------------------------
Control transmitter frequency Protected TV station
range location TV channel
------------------------------------------------------------------------
470-476 MHz...................... Hanover, NH, (15)
43°42[min]30.3[sec]
N. Lat.
72°09[min]14.3[sec]
W. Long.
476-482 MHz...................... Lancaster, PA, (15)
482-488 MHz...................... 40°15[min]45.3[sec]
N. Lat.
76°27[min]47.9[sec]
W. Long.
Scranton, PA, (16)
41°10[min]58.3[sec]
N. Lat.
75°52[min]19.7[sec]
W. Long.
Hanover, NH, (15)
43°42[min]30.3[sec]
N. Lat.
72°09[min]14.3[sec]
W. Long.
------------------------------------------------------------------------
Note: Coordinates are referenced to North American Datum 1983 (NAD83).
(2) Table E-12 of this section applies to base transmitters in the New
York-Northeastern New Jersey urban area.
Table E-8_Maximum ERP (Watts) for Base Tr
ansmitters (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. 22.659(b)(2). 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-9_Maximum ERP (Watts) for Base Transmitters (HAAT More
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. 22.659(b)(2). 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 interp
olation to obtain the maximum
permitted ERP.
Table E-10_Maximum ERP (Watts) for Base Tr
ansmitters (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
-------------------------------------------------------------------------------
-------------------------------------------------------------------------
See Sec. 22.659(b)(3). This table applies for antenna heights of 152 meters (500 f
eet) 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-11_Maximum ERP (Watts) for Base Transmitters (HAAT More
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
-------------------------------------------------------------------------------
---------------------------------
See Sec. 22.659(b)(3). 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 interp
olation to obtain the maximum
permitted ERP.
Table E-12_Maximum ERP (Watts) for Base Transmitt
ers
-------------------------------------------------------------------------------
---------------------------------
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. 22.659(c)(2). This table applies to base transmitters in the New York-Nor
theastern New Jersey urban
areas. This table is for antenna heights of 152 meters (500 feet) or less abo
ve average terrain. For antenna
heights between those in the table, use the next higher antenna height. For d
istances between those in the
table, use the next lower distance.
[ 59 FR 59507 , Nov. 17, 1994, as amended at 63 FR 68947 , Dec. 14, 1998]
Subpart F--Rural Radiotelephone Service
Goto Section: 21.657 | 21.701
Goto Year: 2004 |
2006
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