Goto Section: 101.101 | 101.105 | Table of Contents
Revised as of October 1, 2020
Goto Year:2019 |
§ 101.103 Frequency coordination procedures.
(a) Assignment of frequencies will be made only in such a manner as to
facilitate the rendition of communication service on an
interference-free basis in each service area. Unless otherwise
indicated, each frequency available for use by stations in these
services will be assigned exclusively to a single applicant in any
service area. All applicants for, and licensees of, stations in these
services must cooperate in the selection and use of the frequencies
assigned in order to minimize interference and thereby obtain the most
effective use of the authorized facilities. In the event harmful
interference occurs or appears likely to occur between two or more
radio systems and such interference cannot be resolved between the
licensees thereof, the Commission may specify a time sharing
arrangement for the stations involved or may, after notice and
opportunity for hearing, require the licensees to make such changes in
operating techniques or equipment as it may deem necessary to avoid
(b)(1) Operations in the bands 31,000-31,075 MHz and 31,225-31,300 MHz
licensed prior to March 11, 1997, were licensed on an unprotected basis
and are subject to harmful interference from similarly licensed
operations in that band.
(i) Operations licensed in the Local Mulitpoint Distribution Service
and those operations licensed prior to March 11, 1997, except in the
Local Television Transmission Service, operating in these bands are
equally protected against harmful interference from each other.
(ii) In the case of operations licensed prior to March 11, 1997, except
in the Local Television Transmission Service, that are licensed on a
point-to-radius basis, LMDS licensees shall be subject to the
protection requirement established in this section in the case of
existing links operated by such licensees, and in the case of links
added by such licensees in the future in accordance with the terms of
their point-to-radius licenses.
(iii) An LMDS licensee may not initiate operations within the
point-to-radius area licensed to an operator (other than an operator in
the Local Television Transmission Service) prior to March 11, 1997,
even if such operator has not initiated operations to the fullest
extent of the license. An LMDS licensee, however, may initiate
operations at the border of such operator's license area without prior
coordination if the LMDS licensee's operations would not cause harmful
interference to the other operator's existing operations.
(iv) An operator (other than an operator in the Local Television
Transmission Service) licensed on a point-to-radius basis prior to
March 11, 1997, may add additional stations within its license area.
Such operator shall coordinate with any affected LMDS licensee if its
new operations might cause harmful interference to the existing
operations of such LMDS licensee.
(v) Operations licensed prior to March 11, 1997, on a point-to-point
basis may not be extended or otherwise modified through the addition of
point-to-point links. Such operations shall be limited to the use of
frequency pairs licensed as of March 11, 1997. Operations licensed in
the Local Television Transmission Service as of March 11, 1997, may
continue to operate, but such operators may not expand existing
operations nor initiate new operations.
(2) Operations in the 31,075-31,225 MHz band licensed prior to March
11, 1997, shall receive no protection against harmful interference from
authorized operations in the Local Multipoint Distribution Service in
(3) Non-LMDS operations in the entire 31,000-31,300 MHz band licensed
after March 11, 1997, based on applications refiled no later than June
26, 1998 are unprotected with respect to each other and subject to
harmful interference from each other.
(i) Such operations and any operations licensed prior to March 11,
1997, in the band are unprotected with respect to each other and
subject to harmful interference from each other.
(ii) Such operations are licensed on a secondary basis to LMDS
operations licensed in the band, may not cause interference to LMDS
operations, and are not protected from interference from LMDS
(iii) Such operations licensed on a point-to-point basis may not be
extended or otherwise modified through the addition of point-to-point
links. Such operations licensed on a point-to-radius basis may add
additional stations within the licensed area.
(c) Frequency diversity transmission will not be authorized in these
services in the absence of a factual showing that the required
communications cannot practically be achieved by other means. Where
frequency diversity is deemed to be justified on a protection channel
basis, it will be limited to one protection channel for the bands
3,700-4,200, 5925-6425, and 6525-6875 MHz, and a ratio of one
protection channel for three working channels for the bands
10,550-10,680 and 10,700-11,700 MHz. In the bands 3,700-4,200,
5,925-6,425, and 6525-6875 MHz, no frequency diversity protection
channel will be authorized unless there is a minimum of three working
channels, except that where a substantial showing is made that a total
of three working channels will be required within three years, a
protection channel may be authorized simultaneously with the first
working channel. A protection channel authorized under such exception
will be subject to termination if applications for the third working
channel are not filed within three years of the grant date of the
applications for the first working channel. Where equipment employing
digital modulation techniques with cross-polarized operation on the
same frequency is used, the protection channel authorized under the
above conditions may be considered to consist of both polarizations of
the protection frequency where such is shown to be necessary.
(d) Frequency coordination. For each frequency authorized under this
part, the following frequency usage coordination procedures will apply:
(1) General requirements. Proposed frequency usage must be prior
coordinated with existing licensees, permittees and applicants in the
area, and other applicants with previously filed applications, whose
facilities could affect or be affected by the new proposal in terms of
frequency interference on active channels, applied-for channels, or
channels coordinated for future growth. Coordination must be completed
prior to filing an application for regular authorization, or a major
amendment to a pending application, or any major modification to a
license. In coordinating frequency usage with stations in the fixed
satellite service, applicants must also comply with the requirements of
§ 101.21(f). In engineering a system or modification thereto, the
applicant must, by appropriate studies and analyses, select sites,
transmitters, antennas and frequencies that will avoid interference in
excess of permissible levels to other users. All applicants and
licensees must cooperate fully and make reasonable efforts to resolve
technical problems and conflicts that may inhibit the most effective
and efficient use of the radio spectrum; however, the party being
coordinated with is not obligated to suggest changes or re-engineer a
proposal in cases involving conflicts. Applicants should make every
reasonable effort to avoid blocking the growth of systems as prior
coordinated. The applicant must identify in the application all
entities with which the technical proposal was coordinated. In the
event that technical problems are not resolved, an explanation must be
submitted with the application. Where technical problems are resolved
by an agreement or operating arrangement between the parties that would
require special procedures be taken to reduce the likelihood of
interference in excess of permissible levels (such as the use of
artificial site shielding) or would result in a reduction of quality or
capacity of either system, the details thereof may be contained in the
(2) Coordination procedure guidelines are as follows:
(i) Coordination involves two separate elements: notification and
response. Both or either may be oral or in written form. To be
acceptable for filing, all applications and major technical amendments
must certify that coordination, including response, has been completed.
The names of the licensees, permittees and applicants with which
coordination was accomplished must be specified. If such notice and/or
response is oral, the party providing such notice or response must
supply written documentation of the communication upon request;
(ii) Notification must include relevant technical details of the
proposal. At minimum, this should include, as applicable, the
Applicant's name and address.
Transmitting station name.
Transmitting station coordinates.
Frequencies and polarizations to be added, changed or deleted.
Transmitting equipment type, its stability, actual output power,
emission designator, and type of modulation(s) (loading). Notification
shall indicate if modulations lower than the values listed in the table
to § 101.141(a)(3) of the Commission's rules will be used.
Transmitting antenna type(s), model, gain and, if required, a radiation
pattern provided or certified by the manufacturer.
Transmitting antenna center line height(s) above ground level and
ground elevation above mean sea level.
Receiving station name.
Receiving station coordinates.
Receiving antenna type(s), model, gain, and, if required, a radiation
pattern provided or certified by the manufacturer.
Receiving antenna center line height(s) above ground level and ground
elevation above mean sea level.
Path azimuth and distance.
Estimated transmitter transmission line loss expressed in dB.
Estimated receiver transmission line loss expressed in dB.
For a system utilizing ATPC, maximum transmit power, coordinated
transmit power, and nominal transmit power.
Note: The position location of antenna sites shall be determined to an
accuracy of no less than ±1 second in the horizontal dimensions
(latitude and longitude) and ±1 meter in the vertical dimension (ground
elevation) with respect to the National Spatial Reference System.
(iii) For transmitters employing digital modulation techniques, the
notification should clearly identify the type of modulation. Upon
request, additional details of the operating characteristics of the
equipment must also be furnished;
(iv) Response to notification should be made as quickly as possible,
even if no technical problems are anticipated. Any response to
notification indicating potential interference must specify the
technical details and must be provided to the applicant, in writing,
within the 30-day notification period. Every reasonable effort should
be made by all applicants, permittees and licensees to eliminate all
problems and conflicts. If no response to notification is received
within 30 days, the applicant will be deemed to have made reasonable
efforts to coordinate and may file its application without a response;
(v) The 30-day notification period is calculated from the date of
receipt by the applicant, permittee, or licensee being notified. If
notification is by mail, this date may be ascertained by:
(A) The return receipt on certified mail;
(B) The enclosure of a card to be dated and returned by the recipient;
(C) A conservative estimate of the time required for the mail to reach
its destination. In the last case, the estimated date when the 30-day
period would expire should be stated in the notification.
(vi) An expedited prior coordination period (less than 30 days) may be
requested when deemed necessary by a notifying party. The coordination
notice should be identified as "expedited" and the requested response
date should be clearly indicated. However, circumstances preventing a
timely response from the receiving party should be accommodated
accordingly. It is the responsibility of the notifying party to receive
written concurrence (or verbal, with written to follow) from affected
parties or their coordination representatives.
(vii) All technical problems that come to light during coordination
must be resolved unless a statement is included with the application to
the effect that the applicant is unable or unwilling to resolve the
conflict and briefly the reason therefor;
(viii) Where a number of technical changes become necessary for a
system during the course of coordination, an attempt should be made to
minimize the number of separate notifications for these changes. Where
the changes are incorporated into a completely revised notice, the
items that were changed from the previous notice should be identified.
When changes are not numerous or complex, the party receiving the
changed notification should make an effort to respond in less than 30
days. When the notifying party believes a shorter response time is
reasonable and appropriate, it may be helpful for that party to so
indicate in the notice and perhaps suggest a response date;
(ix) If, after coordination is successfully completed, it is determined
that a subsequent change could have no impact on some parties receiving
the original notification, these parties must be notified of the change
and of the coordinator's opinion that no response is required;
(x) Applicants, permittees and licensees should supply to all other
applicants, permittees and licensees within their areas of operations,
the name, address and telephone number of their coordination
representatives. Upon request from coordinating applicants, permittees
and licensees, data and information concerning existing or proposed
facilities and future growth plans in the area of interest should be
furnished unless such request is unreasonable or would impose a
significant burden in compilation;
(xi) Parties should keep other parties with whom they are coordinating
advised of changes in plans for facilities previously coordinated. If
applications have not been filed 6 months after coordination was
initiated, parties may assume that such frequency use is no longer
desired unless a second notification has been received within 10 days
of the end of the 6 month period. Renewal notifications are to be sent
to all originally notified parties, even if coordination has not been
successfully completed with those parties; and
(xii) Any frequency reserved by a licensee for future use in the bands
subject to this part must be released for use by another licensee,
permittee or applicant upon a showing by the latter that it requires an
additional frequency and cannot coordinate one that is not reserved for
(e) Where frequency conflicts arise between co-pending applications in
the Private Operational Fixed Point-to-Point Microwave, Common Carrier
Fixed Point-to-Point Microwave and Local Television Transmission
Services, it is the obligation of the later filing applicant to amend
his application to remove the conflict, unless it can make a showing
that the conflict cannot be reasonably eliminated. Where a frequency
conflict is not resolved and no showing is submitted as to why the
conflict cannot be resolved, the Commission may grant the first filed
application and dismiss the later filed application(s) after giving the
later filing applicant(s) 30 days to respond to the proposed action.
(f)(1) Coordination and information sharing between MVDDS and NGSO FSS
licensees in the 12.2 GHz to 12.7 GHz band. Prior to the construction
or addition of an MVDDS transmitting antenna in this frequency band,
the MVDDS licensee shall provide notice of intent to construct the
proposed antenna site to NGSO FSS licensees operating in the 12.2-12.7
GHz frequency band and maintain an Internet web site of all existing
transmitting sites and transmitting antennas that are scheduled for
operation within one year including the "in service" dates. In addition
to the location of a proposed new transmitting antenna, MVDDS licensees
shall provide to the NGSO FSS licensees a technical description of the
operating characteristics of the proposed transmission facility. At a
minimum, the following information must be included in each
(i) Name of MVDDS licensee;
(ii) Geographic location (including NAD83 coordinates) of proposed
MVDDS transmitting antenna;
(iii) Maximum EIRP per 24 MHz;
(iv) Height above average terrain of the transmitting antenna;
(v) Type of antenna to be utilized;
(vi) Main beam azimuth and altitude orientation for the proposed
(vii) Theoretically modeled antenna radiation pattern;
(viii) Type(s) of emissions, and;
(ix) Description of the proposed service area.
(2) If the proposed MVDDS antenna site does not meet the minimum
spacing requirements on the date of original notification or on
subsequent annual anniversary dates of non-operation as set forth in
§ 101.129, then the MVDDS licensee shall not construct the proposed
transmission facility unless all NGSO FSS licensees having active
subscribers within the minimum separation distance agree to a shorter
spacing. Nothing in this section shall preclude MVDDS and NGSO FSS
licensees from agreeing to accept the siting of new MVDDS transmitting
antennas that do no meet the minimum distance set forth in § 101.129.
Incumbent point-to-point licensees' (those not licensed as MVDDS)
facilities are to be operated in the band 12,200-12,700 MHz following
the procedures, technical standards, and requirements of § 101.105 in
order to protect stations providing Direct Broadcast Satellite Service.
(g) Licensees operating in Basic Trading Areas authorized in the Local
Multipoint Distribution Service. (1) When the transmitting facilities
in a Basic Trading Area (BTA) are to be operated in the bands
29,100-29,250 MHz and 31,000-31,300 MHz and the facilities are located
within 20 kilometers of the boundaries of a BTA, each licensee must
complete the frequency coordination process of paragraph (d)(2) of this
section with respect to neighboring BTA licensees that may be affected
by its operations prior to initiating service. In addition, all
licensed transmitting facilities operating in the bands 31,000-31,075
MHz and 31,225-31,300 MHz and located within 20 kilometers of
neighboring facilities must complete the frequency coordination process
of paragraph (d)(2) of this section with respect to such authorized
operations before initiating service.
(2) Response to notification should be made as quickly as possible,
even if no technical problems are anticipated. Any response to
notification indicating potential interference must specify the
technical details and must be provided to the applicant, either
electronically or in writing, within the 30-day notification period.
Every reasonable effort should be made by all licensees to eliminate
all problems and conflicts. If no response to notification is received
within 30 days, the licensee will be deemed to have made reasonable
efforts to coordinate and commence operation without a response. The
beginning of the 30-day period is determined pursuant to paragraph
(d)(2)(v) of this section.
(h) Special requirements for operations in the band 29,100-29,250 MHz.
(1)(i) Local Multipoint Distribution Service (LMDS) receive stations
operating on frequencies in the 29,100-29,250 MHz band within a radius
of 75 nautical miles of the geographic coordinates provided by a
non-GSO-MSS licensee pursuant to § 101.113(c)(2) or (c)(3)(i) (the
"feeder link earth station complex protection zone") shall accept any
interference caused to them by such earth station complexes and shall
not claim protection from such earth station complexes.
(ii) LMDS licensees operating on frequencies in the 29,100-29,250 MHz
band outside a feeder link earth station complex protection zone shall
cooperate fully and make reasonable efforts to resolve technical
problems with the non-GSO MSS licensee to the extent that transmissions
from the non-GSO MSS operator's feeder link earth station complex
interfere with an LMDS receive station.
(2) No more than 15 days after the release of a public notice
announcing the commencement of LMDS auctions, feeder link earth station
complexes to be licensed pursuant to § 25.257 of this chapter shall be
specified by a set of geographic coordinates in accordance with the
following requirements: no feeder link earth station complex may be
located in the top eight (8) metropolitan statistical areas (MSAs),
ranked by population, as defined by the Office of Management and Budget
as of June 1993, using estimated populations as of December 1992; two
(2) complexes may be located in MSAs 9 through 25, one of which must be
Phoenix, AZ (for a complex at Chandler, AZ); two (2) complexes may be
located in MSAs 26 to 50; three (3) complexes may be located in MSAs 51
to 100, one of which must be Honolulu, Hawaii (for a complex at
Waimea); and the three (3) remaining complexes must be located at least
75 nautical miles from the borders of the 100 largest MSAs or in any
MSA not included in the 100 largest MSAs. Any location allotted for one
range of MSAs may be taken from an MSA below that range.
(3)(i) Any non-GSO MSS licensee may at any time specify sets of
geographic coordinates for feeder link earth station complexes with
each earth station contained therein to be located at least 75 nautical
miles from the border of the 100 largest MSAs.
(ii) For purposes of paragraph (h)(3)(i) of this section, non-GSO MSS
feeder link earth station complexes shall be entitled to accommodation
only if the affected non-GSO MSS licensee preapplies to the Commission
for a feeder link earth station complex or certifies to the Commission
within sixty days of receiving a copy of an LMDS application that it
intends to file an application for a feeder link earth station complex
within six months of the date of receipt of the LMDS application.
(iii) If said non-GSO MSS licensee application is filed later than six
months after certification of the Commission, the LMDS and non-GSO MSS
entities shall still cooperate fully and make reasonable efforts to
resolve technical problems, but the LMDS licensee shall not be
obligated to re-engineer its proposal or make changes to its system.
(4) LMDS licensees or applicants proposing to operate hub stations on
frequencies in the 29,100-29,250 MHz band at locations outside of the
100 largest MSAs or within a distance of 150 nautical miles from a set
of geographic coordinates specified under paragraphs (h)(2) or
(h)(3)(i) of this section shall serve copies of their applications on
all non-GSO MSS applicants, permittees or licensees meeting the
criteria specified in § 25.257(a). Non-GSO MSS licensees or applicants
shall serve copies of their feeder link earth station applications,
after the LMDS auction, on any LMDS applicant or licensee within a
distance of 150 nautical miles from the geographic coordinates that it
specified under § 101.113(c)(2) or (c)(3)(i). Any necessary coordination
shall commence upon notification by the party receiving an application
to the party who filed the application. The results of any such
coordination shall be reported to the Commission within sixty days. The
non-GSO MSS earth station licensee shall also provide all such LMDS
licensees with a copy of its channel plan.
[ 61 FR 26677 , May 28, 1996, as amended at 62 FR 23165 , Apr. 29, 1997;
63 FR 6105 , Feb. 6, 1998; 63 FR 9448 , Feb. 25, 1998; 63 FR 14039 , Mar.
24, 1998; 63 FR 68983 , Dec. 14, 1998; 64 FR 45893 , Aug. 23, 1999; 65 FR 38328 , June 20, 2000; 67 FR 43037 , June 26, 2002; 76 FR 59571 , Sept.
27, 2011; 81 FR 79944 , Nov. 14, 2016]
Goto Section: 101.101 | 101.105
Goto Year: 2019 |
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