Goto Section: 27.20 | 27.51 | Table of Contents
FCC 27.50
Revised as of October 2, 2015
Goto Year:2014 |
2016
§ 27.50 Power limits and duty cycle.
(a) The following power limits and related requirements apply to stations
transmitting in the 2305-2320 MHz band or the 2345-2360 MHz band.
(1) Base and fixed stations. (i) For base and fixed stations transmitting in
the 2305-2315 MHz band or the 2350-2360 MHz band:
(A) The average equivalent isotropically radiated power (EIRP) must not
exceed 2,000 watts within any 5 megahertz of authorized bandwidth and must
not exceed 400 watts within any 1 megahertz of authorized bandwidth.
(B) The peak-to-average power ratio (PAPR) of the transmitter output power
must not exceed 13 dB. The PAPR measurements should be made using either an
instrument with complementary cumulative distribution function (CCDF)
capabilities to determine that PAPR will not exceed 13 dB for more than 0.1
percent of the time or other Commission approved procedure. The measurement
must be performed using a signal corresponding to the highest PAPR expected
during periods of continuous transmission.
(ii) For base and fixed stations transmitting in the 2315-2320 MHz band or
the 2345-2350 MHz band, the peak EIRP must not exceed 2,000 watts.
(2) Fixed customer premises equipment stations. For fixed customer premises
equipment (CPE) stations transmitting in the 2305-2320 MHz band or in the
2345-2360 MHz band, the peak EIRP must not exceed 20 watts within any 5
megahertz of authorized bandwidth. Fixed CPE stations transmitting in the
2305-2320 MHz band or in the 2345-2360 MHz band must employ automatic
transmit power control when operating so the stations operate with the
minimum power necessary for successful communications. The use of outdoor
antennas for CPE stations or outdoor CPE station installations operating
with 2 watts per 5 megahertz or less average EIRP using the stepped
emissions mask prescribed in § 27.53(a)(3) is prohibited except if
professionally installed in locations removed by 20 meters from roadways or
in locations where it can be shown that the ground power level of -44 dBm in
the A or B blocks or -55 dBm in the C or D blocks will not be exceeded at
the nearest road location. The use of outdoor antennas for fixed CPE
stations operating with 2 watts per 5 megahertz or less average EIRP and the
emissions mask prescribed in § 27.53(a)(1)(i) through (iii) is permitted in
all locations. For fixed WCS CPE using TDD technology, the duty cycle must
not exceed 38 percent;
(3) Mobile and portable stations. (i) For mobile and portable stations
transmitting in the 2305-2315 MHz band or the 2350-2360 MHz band, the
average EIRP must not exceed 50 milliwatts within any 1 megahertz of
authorized bandwidth, except that for mobile and portable stations compliant
with 3GPP LTE standards or another advanced mobile broadband protocol that
avoids concentrating energy at the edge of the operating band the average
EIRP must not exceed 250 milliwatts within any 5 megahertz of authorized
bandwidth but may exceed 50 milliwatts within any 1 megahertz of authorized
bandwidth. For mobile and portable stations using time division duplexing
(TDD) technology, the duty cycle must not exceed 38 percent in the 2305-2315
MHz and 2350-2360 MHz bands. Mobile and portable stations using FDD
technology are restricted to transmitting in the 2305-2315 MHz band. Power
averaging shall not include intervals in which the transmitter is off.
(ii) Mobile and portable stations are not permitted to transmit in the
2315-2320 MHz and 2345-2350 MHz bands.
(iii) Automatic transmit power control. Mobile and portable stations
transmitting in the 2305-2315 MHz band or in the 2350-2360 MHz band must
employ automatic transmit power control when operating so the stations
operate with the minimum power necessary for successful communications.
(iv) Prohibition on external vehicle-mounted antennas. The use of external
vehicle-mounted antennas for mobile and portable stations transmitting in
the 2305-2315 MHz band or the 2350-2360 MHz band is prohibited.
(b) The following power and antenna height limits apply to transmitters
operating in the 746-758 MHz, 775-788 MHz and 805-806 MHz bands:
(1) Fixed and base stations transmitting a signal in the 757-758 and 775-776
MHz bands must not exceed an effective radiated power (ERP) of 1000 watts
and an antenna height of 305 m height above average terrain (HAAT), except
that antenna heights greater than 305 m HAAT are permitted if power levels
are reduced below 1000 watts ERP in accordance with Table 1 of this section.
(2) Fixed and base stations transmitting a signal in the 746-757 MHz and
776-787 MHz bands with an emission bandwidth of 1 MHz or less must not
exceed an ERP of 1000 watts and an antenna height of 305 m HAAT, except that
antenna heights greater than 305 m HAAT are permitted if power levels are
reduced below 1000 watts ERP in accordance with Table 1 of this section.
(3) Fixed and base stations located in a county with population density of
100 or fewer persons per square mile, based upon the most recently available
population statistics from the Bureau of the Census, and transmitting a
signal in the 746-757 MHz and 776-787 MHz bands with an emission bandwidth
of 1 MHz or less must not exceed an ERP of 2000 watts and an antenna height
of 305 m HAAT, except that antenna heights greater than 305 m HAAT are
permitted if power levels are reduced below 2000 watts ERP in accordance
with Table 2 of this section.
(4) Fixed and base stations transmitting a signal in the 746-757 MHz and
776-787 MHz bands with an emission bandwidth greater than 1 MHz must not
exceed an ERP of 1000 watts/MHz and an antenna height of 305 m HAAT, except
that antenna heights greater than 305 m HAAT are permitted if power levels
are reduced below 1000 watts/MHz ERP in accordance with Table 3 of this
section.
(5) Fixed and base stations located in a county with population density of
100 or fewer persons per square mile, based upon the most recently available
population statistics from the Bureau of the Census, and transmitting a
signal in the 746-757 MHz and 776-787 MHz bands with an emission bandwidth
greater than 1 MHz must not exceed an ERP of 2000 watts/MHz and an antenna
height of 305 m HAAT, except that antenna heights greater than 305 m HAAT
are permitted if power levels are reduced below 2000 watts/MHz ERP in
accordance with Table 4 of this section.
(6) Licensees of fixed or base stations transmitting a signal in the 746-757
MHz and 776-787 MHz bands at an ERP greater than 1000 watts must comply with
the provisions set forth in paragraph (b)(8) of this section and § 27.55(c).
(7) Licensees seeking to operate a fixed or base station located in a county
with population density of 100 or fewer persons per square mile, based upon
the most recently available population statistics from the Bureau of the
Census, and transmitting a signal in the 746-757 MHz and 776-787 MHz bands
at an ERP greater than 1000 watts must:
(i) Coordinate in advance with all licensees authorized to operate in the
698-758 MHz, 775-788, and 805-806 MHz bands within 120 kilometers (75 miles)
of the base or fixed station;
(ii) coordinate in advance with all regional planning committees, as
identified in § 90.527 of this chapter, with jurisdiction within 120
kilometers (75 miles) of the base or fixed station.
(8) Licensees authorized to transmit in the 746-757 MHz and 776-787 MHz
bands and intending to operate a base or fixed station at a power level
permitted under the provisions of paragraph (b)(6) of this section must
provide advanced notice of such operation to the Commission and to licensees
authorized in their area of operation. Licensees who must be notified are
all licensees authorized to operate in the 758-775 MHz and 788-805 MHz bands
under part 90 of this chapter within 75 km of the base or fixed station and
all regional planning committees, as identified in § 90.527 of this chapter,
with jurisdiction within 75 km of the base or fixed station. Notifications
must provide the location and operating parameters of the base or fixed
station, including the station's ERP, antenna coordinates, antenna height
above ground, and vertical antenna pattern, and such notifications must be
provided at least 90 days prior to the commencement of station operation.
(9) Control stations and mobile stations transmitting in the 746-757 MHz,
776-788 MHz, and 805-806 MHz bands and fixed stations transmitting in the
787-788 MHz and 805-806 MHz bands are limited to 30 watts ERP.
(10) Portable stations (hand-held devices) transmitting in the 746-757 MHz,
776-788 MHz, and 805-806 MHz bands are limited to 3 watts ERP.
(11) For transmissions in the 757-758, 775-776, 787-788, and 805-806 MHz
bands, maximum composite transmit power shall be measured over any interval
of continuous transmission using instrumentation calibrated in terms of
RMS-equivalent voltage. The measurement results shall be properly adjusted
for any instrument limitations, such as detector response times, limited
resolution bandwidth capability when compared to the emission bandwidth,
etc., so as to obtain a true maximum composite measurement for the emission
in question over the full bandwidth of the channel.
(12) For transmissions in the 746-757 and 776-787 MHz bands, licensees may
employ equipment operating in compliance with either the measurement
techniques described in paragraph (b)(11) of this section or a
Commission-approved average power technique. In both instances, equipment
employed must be authorized in accordance with the provisions of § 27.51.
(c) The following power and antenna height requirements apply to stations
transmitting in the 600 MHz band and the 698-746 MHz band:
(1) Fixed and base stations transmitting a signal with an emission bandwidth
of 1 MHz or less must not exceed an effective radiated power (ERP) of 1000
watts and an antenna height of 305 m height above average terrain (HAAT),
except that antenna heights greater than 305 m HAAT are permitted if power
levels are reduced below 1000 watts ERP in accordance with Table 1 of this
section;
(2) Fixed and base stations located in a county with population density of
100 or fewer persons per square mile, based upon the most recently available
population statistics from the Bureau of the Census, and transmitting a
signal with an emission bandwidth of 1 MHz or less must not exceed an ERP of
2000 watts and an antenna height of 305 m HAAT, except that antenna heights
greater than 305 m HAAT are permitted if power levels are reduced below 2000
watts ERP in accordance with Table 2 of this section;
(3) Fixed and base stations transmitting a signal with an emission bandwidth
greater than 1 MHz must not exceed an ERP of 1000 watts/MHz and an antenna
height of 305 m HAAT, except that antenna heights greater than 305 m HAAT
are permitted if power levels are reduced below 1000 watts/MHz ERP in
accordance with Table 3 of this section;
(4) Fixed and base stations located in a county with population density of
100 or fewer persons per square mile, based upon the most recently available
population statistics from the Bureau of the Census, and transmitting a
signal with an emission bandwidth greater than 1 MHz must not exceed an ERP
of 2000 watts/MHz and an antenna height of 305 m HAAT, except that antenna
heights greater than 305 m HAAT are permitted if power levels are reduced
below 2000 watts/MHz ERP in accordance with Table 4 of this section;
(5) Licensees, except for licensees operating in the 600 MHz downlink band,
seeking to operate a fixed or base station located in a county with
population density of 100 or fewer persons per square mile, based upon the
most recently available population statistics from the Bureau of the Census,
and transmitting a signal at an ERP greater than 1000 watts must:
(i) Coordinate in advance with all licensees authorized to operate in the
698-758 MHz, 775-788, and 805-806 MHz bands within 120 kilometers (75 miles)
of the base or fixed station;
(ii) coordinate in advance with all regional planning committees, as
identified in § 90.527 of this chapter, with jurisdiction within 120
kilometers (75 miles) of the base or fixed station.
(6) Licensees of fixed or base stations transmitting a signal at an ERP
greater than 1000 watts and greater than 1000 watts/MHz must comply with the
provisions of paragraph (c)(8) of this section and § 27.55(b), except that
licensees of fixed or base stations located in a county with population
density of 100 or fewer persons per square mile, based upon the most
recently available population statistics from the Bureau of the Census, must
comply with the provisions of paragraph (c)(8) of this section and § 27.55(b)
only if transmitting a signal at an ERP greater than 2000 watts and greater
than 2000 watts/MHz;
(7) A licensee authorized to operate in the 710-716 or 740-746 MHz bands may
operate a fixed or base station at an ERP up to a total of 50 kW within its
authorized, 6 megahertz spectrum block if the licensee complies with the
provisions of § 27.55(b). The antenna height for such stations is limited
only to the extent required to satisfy the requirements of § 27.55(b).
(8) Licensees intending to operate a base or fixed station at a power level
permitted under the provisions of paragraph (c)(6) of this section must
provide advanced notice of such operation to the Commission and to licensees
authorized in their area of operation. Licensees who must be notified are
all licensees authorized under this part to operate on an adjacent spectrum
block within 75 km of the base or fixed station. Notifications must provide
the location and operating parameters of the base or fixed station,
including the station's ERP, antenna coordinates, antenna height above
ground, and vertical antenna pattern, and such notifications must be
provided at least 90 days prior to the commencement of station operation.
(9) Control and mobile stations in the 698-746 MHz band are limited to 30
watts ERP.
(10) Portable stations (hand-held devices) in the 600 MHz uplink band and
the 698-746 MHz band, and fixed and mobile stations in the 600 MHz uplink
band are limited to 3 watts ERP.
(11) Licensees may employ equipment operating in compliance with either the
measurement techniques described in paragraph (b)(11) of this section or a
Commission-approved average power technique. In both instances, equipment
employed must be authorized in accordance with the provisions of § 27.51.
(12) A licensee authorized to operate in the 716-722 or 722-728 MHz bands
may operate a fixed or base station at an ERP up to a total of 50 kW within
its authorized, 6 megahertz spectrum block if the licensee complies with the
provisions of § 27.55(b), obtains written concurrences from all affected
licensees in the 698-746 MHz bands within 120 km of the proposed high power
site, and files a copy of each written concurrences with the Wireless
Telecommunications Bureau on FCC Form 601. The antenna height for such
stations is limited only to the extent required to satisfy the requirements
of § 27.55(b).
(13) Licensees authorized to operate in the 716-722 or 722-728 MHz bands
must coordinate with licensees with uplink operations in the 698-716 MHz
band to mitigate the potential for harmful interference. Licensees
authorized to operate in the 716-722 or 722-728 MHz bands must mitigate
harmful interference to licensees' uplink operations in the 698-716 MHz band
within 30 days after receiving written notice from the affected licensees. A
licensee authorized to operate in the 716-722 or 722-728 MHz bands must
ensure that 716-728 MHz band transmissions are filtered at least to the
extent that the 716-728 MHz band transmissions are filtered in markets where
the 716-728 MHz band licensee holds any license in the 698-716 band, as
applicable. For purposes of coordination and mitigations measures in
paragraphs (i) and (iii) below, network will be deemed “deployed” as of the
date upon which the network is able to support a commercial mobile or data
service. The coordination and mitigation measures should include, but are
not limited to, the following:
(i) If a licensee operating in the 698-716 and 728-746 MHz band deploys a
network after the 716-722 or 722-728 MHz bands licensee deploys a network on
its 716-722 or 722-728 MHz spectrum in the same geographic market, the
716-722 or 722-728 MHz bands licensee will work with the licensee with
uplink operations in the 698-716 MHz band to identify sites that will
require additional filtering, and will help the licensee operating in the
698-716 and 728-746 MHz bands to identify proper filters;
(ii) The 716-722 or 722-728 MHz bands licensee must permit licensees
operating in the 698-716 and 728-746 MHz bands to collocate on the towers it
owns at prevailing market rates; and
(iii) If a 698-716 and 728-746 MHz bands licensee deploys a network before a
licensee in the 716-722 or 722-728 MHz bands deploys a network in the same
geographic market, the 716-722 or 722-728 MHz bands licensee will work with
licensees in the 698-716 and 728-746 MHz bands to identify sites that will
need additional filtering and will purchase and pay for installation of
required filters on such sites.
(d) The following power and antenna height requirements apply to stations
transmitting in the 1695-1710 MHz, 1710-1755 MHz, 1755-1780 MHz, 1915-1920
MHz, 1995-2000 MHz, 2000-2020 MHz, 2110-2155 MHz, 2155-2180 MHz and
2180-2200 MHz bands:
(1) The power of each fixed or base station transmitting in the 1995-2000
MHz, 2110-2155 MHz, 2155-2180 MHz or 2180-2200 MHz band and located in any
county with population density of 100 or fewer persons per square mile,
based upon the most recently available population statistics from the Bureau
of the Census, is limited to:
(i) An equivalent isotropically radiated power (EIRP) of 3280 watts when
transmitting with an emission bandwidth of 1 MHz or less;
(ii) An EIRP of 3280 watts/MHz when transmitting with an emission bandwidth
greater than 1 MHz.
(2) The power of each fixed or base station transmitting in the 1995-2000
MHz, the 2110-2155 MHz 2155-2180 MHz band, or 2180-2200 MHz band and
situated in any geographic location other than that described in paragraph
(d)(1) of this section is limited to:
(i) An equivalent isotropically radiated power (EIRP) of 1640 watts when
transmitting with an emission bandwidth of 1 MHz or less;
(ii) An EIRP of 1640 watts/MHz when transmitting with an emission bandwidth
greater than 1 MHz.
(3) A licensee operating a base or fixed station in the 2110-2155 MHz band
utilizing a power greater than 1640 watts EIRP and greater than 1640
watts/MHz EIRP must coordinate such operations in advance with all
Government and non-Government satellite entities in the 2025-2110 MHz band.
A licensee operating a base or fixed station in the 2110-2180 MHz band
utilizing power greater than 1640 watts EIRP and greater than 1640 watts/MHz
EIRP must be coordinated in advance with the following licensees authorized
to operate within 120 kilometers (75 miles) of the base or fixed station
operating in this band: All Broadband Radio Service (BRS) licensees
authorized under this part in the 2155-2160 MHz band and all advanced
wireless services (AWS) licensees authorized to operate on adjacent
frequency blocks in the 2110-2180 MHz band.
(4) Fixed, mobile, and portable (hand-held) stations operating in the
1710-1755 MHz band and mobile and portable stations operating in the
1695-1710 MHz and 1755-1780 MHz bands are limited to 1 watt EIRP. Fixed
stations operating in the 1710-1755 MHz band are limited to a maximum
antenna height of 10 meters above ground. Mobile and portable stations
operating in these bands must employ a means for limiting power to the
minimum necessary for successful communications.
(5) Equipment employed must be authorized in accordance with the provisions
of § 24.51. Power measurements for transmissions by stations authorized under
this section may be made either in accordance with a Commission-approved
average power technique or in compliance with paragraph (d)(6) of this
section. In measuring transmissions in this band using an average power
technique, the peak-to-average ratio (PAR) of the transmission may not
exceed 13 dB.
(6) Peak transmit power must be measured over any interval of continuous
transmission using instrumentation calibrated in terms of an rms-equivalent
voltage. The measurement results shall be properly adjusted for any
instrument limitations, such as detector response times, limited resolution
bandwidth capability when compared to the emission bandwidth, sensitivity,
etc., so as to obtain a true peak measurement for the emission in question
over the full bandwidth of the channel.
(7) Fixed, mobile, and portable (hand-held) stations operating in the
2000-2020 MHz band are limited to 2 watts EIRP, except that the total power
of any portion of an emission that falls within the 2000-2005 MHz band may
not exceed 5 milliwatts. A licensee of AWS-4 authority may enter into
private operator-to-operator agreements with all 1995-2000 MHz licensees to
operate in 2000-2005 MHz at power levels above 5 milliwatts EIRP; except the
total power of the AWS-4 mobile emissions may not exceed 2 watts EIRP.
(8) A licensee operating a base or fixed station in the 2180-2200 MHz band
utilizing a power greater than 1640 watts EIRP and greater than 1640
watts/MHz EIRP must be coordinated in advance with all AWS licensees
authorized to operate on adjacent frequency blocks in the 2180-2200 MHz
band.
(9) Fixed, mobile and portable (hand-held) stations operating in the
1915-1920 MHz band are limited to 300 milliwatts EIRP.
(10) A licensee operating a base or fixed station in the 1995-2000 MHz band
utilizing a power greater than 1640 watts EIRP and greater than 1640
watts/MHz EIRP must be coordinated in advance with all PCS G Block licensees
authorized to operate on adjacent frequency blocks in the 1990-1995 MHz band
within 120 kilometers of the base or fixed station operating in this band.
(e) The following power limits apply to the paired 1392-1395 MHz and
1432-1435 MHz bands as well as the unpaired 1390-1392 MHz band (1.4 GHz
band):
(1) Fixed stations transmitting in the 1390-1392 MHz and 1432-1435 MHz bands
are limited to 2000 watts EIRP peak power. Fixed stations transmitting in
the 1392-1395 MHz band are limited to 100 watts EIRP peak power.
(2) Mobile stations transmitting in the 1390-1392 MHz and 1432-1435 MHz
bands are limited to 4 watts EIRP peak power. Mobile stations transmitting
in the1392-1395 MHz band are limited to 1 watt EIRP peak power.
(f) The following power limits apply to the 1670-1675 MHz band:
(1) Fixed and base stations are limited to 2000 watts EIRP peak power.
(2) Mobile stations are limited to 4 watts EIRP peak power.
(g) [Reserved]
(h) The following power limits shall apply in the BRS and EB§
(1) Main, booster and base stations. (i) The maximum EIRP of a main, booster
or base station shall not exceed 33 dBW + 10log(X/Y) dBW, where X is the
actual channel width in MHz and Y is either 6 MHz if prior to transition or
the station is in the MBS following transition or 5.5 MHz if the station is
in the LBS and UBS following transition, except as provided in paragraph
(h)(1)(ii) of this section.
(ii) If a main or booster station sectorizes or otherwise uses one or more
transmitting antennas with a non-omnidirectional horizontal plane radiation
pattern, the maximum EIRP in dBW in a given direction shall be determined by
the following formula: EIRP = 33 dBW + 10 log(X/Y) dBW + 10
log(360/beamwidth) dBW, where X is the actual channel width in MHz, Y is
either (i) 6 MHz if prior to transition or the station is in the MBS
following transition or (ii) 5.5 MHz if the station is in the LBS and UBS
following transition, and beamwidth is the total horizontal plane beamwidth
of the individual transmitting antenna for the station or any sector
measured at the half-power points.
(2) Mobile and other user stations. Mobile stations are limited to 2.0 watts
EIRP. All user stations are limited to 2.0 watts transmitter output power.
(3) For television transmission, the peak power of the accompanying aural
signal must not exceed 10 percent of the peak visual power of the
transmitter. The Commission may order a reduction in aural signal power to
diminish the potential for harmful interference.
(4) For main, booster and response stations utilizing digital emissions with
non-uniform power spectral density (e.g. unfiltered QPSK), the power
measured within any 100 kHz resolution bandwidth within the 6 MHz channel
occupied by the non-uniform emission cannot exceed the power permitted
within any 100 kHz resolution bandwidth within the 6 MHz channel if it were
occupied by an emission with uniform power spectral density, i.e., if the
maximum permissible power of a station utilizing a perfectly uniform power
spectral density across a 6 MHz channel were 2000 watts EIRP, this would
result in a maximum permissible power flux density for the station of
2000/60 = 33.3 watts EIRP per 100 kHz bandwidth. If a non-uniform emission
were substituted at the station, station power would still be limited to a
maximum of 33.3 watts EIRP within any 100 kHz segment of the 6 MHz channel,
irrespective of the fact that this would result in a total 6 MHz channel
power of less than 2000 watts EIRP.
(i) Peak transmit power shall be measured over any interval of continuous
transmission using instrumentation calibrated in terms of rms-equivalent
voltage. The measurement results shall be properly adjusted for any
instrument limitations, such as detector response times, limited resolution
bandwidth capability when compared to the emission bandwidth, etc., so as to
obtain a true peak measurement for the emission in question over the full
bandwidth of the channel.
Table 1 to § 27.50—Permissible Power and Antenna Heights for Base and Fixed
Stations in the 757-758 and 775-776 MHz Bands and for Base and Fixed
Stations in the 600 MHz, 698-757 MHz, 758-763 MHz, 776-787 MHz and 788-793
MHz Bands Transmitting a Signal With an Emission Bandwidth of 1 MHz or Less
Antenna height (AAT) in
meters
(feet) Effective radiated power (ERP)
(watts)
Above 1372 (4500) 65
Above 1220 (4000) To 1372 (4500) 70
Above 1067 (3500) To 1220 (4000) 75
Above 915 (3000) To 1067 (3500) 100
Above 763 (2500) To 915 (3000) 140
Above 610 (2000) To 763 (2500) 200
Above 458 (1500) To 610 (2000) 350
Above 305 (1000) To 458 (1500) 600
Up to 305 (1000) 1000
Table 2 to § 27.50—Permissible Power and Antenna Heights for Base and Fixed
Stations in the 600 MHz, 698-757 MHz, 758-763 MHz, 776-787 MHz and 788-793
MHz Bands Transmitting a Signal With an Emission Bandwidth of 1 MHz or Less
Antenna height (AAT) in
meters
(feet) Effective radiated power (ERP)
(watts)
Above 1372 (4500) 130
Above 1220 (4000) To 1372 (4500) 140
Above 1067 (3500) To 1220 (4000) 150
Above 915 (3000) To 1067 (3500) 200
Above 763 (2500) To 915 (3000) 280
Above 610 (2000) To 763 (2500) 400
Above 458 (1500) To 610 (2000) 700
Above 305 (1000) To 458 (1500) 1200
Up to 305 (1000) 2000
Table 3 to § 27.50—Permissible Power and Antenna Heights for Base and Fixed
Stations in the 600 MHz, 698-757 MHz, 758-763 MHz, 776-787 MHz and 788-793
MHz Bands Transmitting a Signal With an Emission Bandwidth Greater than 1
MHz
Antenna height (AAT) in
meters
(feet) Effective radiated power (ERP) per MHz
(watts/MHz)
Above 1372 (4500) 65
Above 1220 (4000) To 1372 (4500) 70
Above 1067 (3500) To 1220 (4000) 75
Above 915 (3000) To 1067 (3500) 100
Above 763 (2500) To 915 (3000) 140
Above 610 (2000) To 763 (2500) 200
Above 458 (1500) To 610 (2000) 350
Above 305 (1000) To 458 (1500) 600
Up to 305 (1000) 1000
Table 4 to § 27.50—Permissible Power and Antenna Heights for Base and Fixed
Stations in the 600 MHz, 698-757 MHz, 758-763 MHz, 776-787 MHz and 788-793
MHz Bands Transmitting a Signal With an Emission Bandwidth Greater than 1
MHz
Antenna height (AAT) in
meters
(feet) Effective radiated power (ERP) per MHz
(watts/MHz)
Above 1372 (4500) 130
Above 1220 (4000) To 1372 (4500) 140
Above 1067 (3500) To 1220 (4000) 150
Above 915 (3000) To 1067 (3500) 200
Above 763 (2500) To 915 (3000) 280
Above 610 (2000) To 763 (2500) 400
Above 458 (1500) To 610 (2000) 700
Above 305 (1000) To 458 (1500) 1200
Up to 305 (1000) 2000
[ 62 FR 16497 , Apr. 7, 1997]
Editorial Note: For Federal Register citations affecting § 27.50, see the
List of CFR Sections Affected, which appears in the Finding Aids section of
the printed volume and at www.fdsys.gov.
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