Facilitating Shared Use in the 3.1-3.55 GHz Band
| Published date | 22 January 2020 |
| Citation | 85 FR 3579 |
| Record Number | 2020-00535 |
| Section | Proposed rules |
| Court | Federal Communications Commission |
Federal Register, Volume 85 Issue 14 (Wednesday, January 22, 2020)
[Federal Register Volume 85, Number 14 (Wednesday, January 22, 2020)]
[Proposed Rules]
[Pages 3579-3586]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2020-00535]
[[Page 3579]]
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FEDERAL COMMUNICATIONS COMMISSION
47 CFR Parts 2, 90, and 97
[WT Docket No. 19-348; FCC 19-130; FRS 16397]
Facilitating Shared Use in the 3.1-3.55 GHz Band
AGENCY: Federal Communications Commission.
ACTION: Proposed rule.
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SUMMARY: In this document, a Notice of Proposed Rulemaking (NPRM)
proposes to remove the existing non-federal secondary radiolocation and
amateur allocations in the 3.3-3.55 GHz band and to relocate incumbent
non-federal operations out of the band, in order to prepare the band
for possible expanded commercial wireless use. Specifically, the NPRM
would eliminate the non-federal radiolocation services allocation in
the 3.3-3.55 GHz band and the non-federal amateur allocation in the
3.3-3.5 GHz band. This NPRM also seeks comment on appropriate
relocation options for incumbent non-federal users, either to the 3.1-
3.3 GHz band or to other frequencies, on the transition mechanism and
process for relocating existing non-federal users, and on potential
relocation costs and considerations. The proposals in the NPRM are an
initial step toward potential future shared use between federal
operations and flexible use commercial services, consistent with the
Commission's responsibilities specified in the MOBILE NOW Act to
identify spectrum for new mobile and fixed wireless use and to work in
consultation with the National Telecommunications and Information
Administration (NTIA) to evaluate the feasibility of allowing
commercial wireless services to share use of spectrum between 3.1 and
3.55 GHz.
DATES: Interested parties may file comments on or before February 21,
2020; and reply comments on or before March 23, 2020.
ADDRESSES: You may submit comments, identified by WT Docket No. 19-348,
by any of the following methods:
Federal Communications Commission's website: http://apps.fcc.gov/ecfs/. Follow the instructions for submitting comments.
People with Disabilities: Contact the FCC to request
reasonable accommodations (accessible format documents, sign language
interpreters, CART, etc.) by email: [email protected] or phone: 202-418-
0530 or TTY: 202-418-0432.
For detailed instructions for submitting comments and additional
information on the rulemaking process, see the SUPPLEMENTARY
INFORMATION section of this document.
FOR FURTHER INFORMATION CONTACT: Mary Claire York of the Wireless
Telecommunications Bureau, Mobility Division, (202) 418-2205 or
[email protected]. For additional information concerning the
Paperwork Reduction Act information collection requirements contained
in this NPRM, contact Cathy Williams, Office of Managing Director, at
(202) 418-2918 or [email protected] or email [email protected].
SUPPLEMENTARY INFORMATION: This is a summary of the Commission's Notice
of Proposed Rulemaking (NPRM), WT Docket No. 19-348; FCC 19-130,
adopted on December 12, 2019 and released on December 16, 2019. The
full text of this document is available at https://docs.fcc.gov/public/attachments/FCC-19-130A1.pdf.
Synopsis
MOBILE NOW Act and Current Allocations. Congress addressed the
pressing need for additional spectrum for wireless broadband in the
Fiscal Year 2018 omnibus spending bill, signed into law in March 2018,
which includes the MOBILE NOW Act under Title VI of RAY BAUM'S Act.
Consolidated Appropriations Act, 2018, Public Law 115-141, Division P,
the Repack Airwaves Yielding Better Access for Users of Modern Services
(RAY BAUM'S) Act, Title VI (the Making Opportunities for Broadband
Investment and Limiting Excessive and Needless Obstacles to Wireless
Act or MOBILE NOW Act). In light of the importance of making spectrum
available for new technologies and maintaining America's leadership
position in the future of communications technology, the Act mandates
that the Secretary of Commerce, working through NTIA: (1) Submit, in
consultation with the Commission and the head of each affected Federal
agency (or a designee thereof), a report by March 23, 2020 on the
feasibility of ``allowing commercial wireless service, licensed or
unlicensed, to share use of the frequencies between 3100 megahertz and
3550 megahertz,'' and (2) identify with the Commission ``at least 255
megahertz of Federal and non-Federal spectrum for mobile and fixed
wireless broadband use'' by December 31, 2022. With respect to this
second obligation of NTIA and the Commission, the Act further specifies
that not less than ``100 megahertz below the frequency of 6000
megahertz shall be identified for use on an exclusive, licensed basis
for commercial mobile use, pursuant to the Commission's authority to
implement such licensing in a flexible manner'' and ``subject to
potential continued use of such spectrum by incumbent Federal entities
in designated geographic areas'' in accordance with specified terms of
the Act and not less than ``100 megahertz below the frequency of 8000
megahertz shall be identified for use on an unlicensed basis.'' Id.
Sec. Sec. 605(a), Sec. 603(a)(1), 603(a)(2)(B).
Of the frequencies between 3100 MHz and 3550 MHz, NTIA has
identified the top 100 megahertz in the 3.45-3.55 GHz band as the most
promising portion for sharing in the near term and is conducting a
feasibility assessment in collaboration with the Department of Defense
(DOD), and continues to study the feasibility of sharing in the entire
3.1-3.55 GHz band with existing and future Federal users. The report on
the 3.1-3.55 GHz band must include: ``(1) [a]n assessment of the
operations of Federal entities that operate Federal Government stations
authorized to use the frequencies . . .''; (2) ``[a]n assessment of the
possible impacts of such sharing on Federal and non-Federal users
already operating on the frequencies . . .''; (3) ``[t]he criteria that
may be necessary to ensure shared licensed or unlicensed services would
not cause harmful interference to Federal or non-Federal users already
operating in the frequencies . . .'' and (4) ``[i]f such sharing is
feasible, an identification of which of the frequencies described in
that subsection are most suitable for sharing with commercial wireless
services through the assignment of new licenses by competitive bidding,
for sharing with unlicensed operations, or through a combination of
licensing and unlicensed operations.'' Once NTIA has submitted the
report, ``[t]he Commission, in consultation with the NTIA, shall seek
public comment on the repor[t] . . . .'' Id. Sec. Sec. 605(c), (d).
Currently, the entire 3.1-3.55 GHz band is allocated for both
Federal and non-federal radiolocation services, with non-federal users
operating on a secondary basis to Federal radiolocation services, which
have a primary allocation. 47 CFR 2.106 and US108, 90.103(b), (c)(12).
The Federal radiolocation allocation is one piece of
[[Page 3580]]
a broader Federal primary allocation for radiolocation in the 2.9-3.65
GHz band. 47 CFR 2.106. The DOD operates high-powered defense radar
systems on fixed, mobile, shipborne, and airborne platforms in this
band. These radar systems are used in conjunction with weapons control
systems and for the detection and tracking of air and surface targets.
The DOD also operates radar systems used for fleet air defense, missile
and gunfire control, bomb scoring, battlefield weapon locations, air
traffic control, and range safety.
In addition, the 3.3-3.5 GHz band is allocated for non-federal
amateur use and the 3.5-3.55 GHz band is allocated for Federal
aeronautical radionavigation services. Id. Between 3.3 and 3.55 GHz,
there are only eight active licenses being used for a variety of
commercial and industrial radiolocation services, such as doppler radar
to provide weather information to broadcast viewers. Non-federal
transmitters operating between 3.3-3.5 GHz are limited to survey
operations and cannot exceed a peak power of 5 watts into the antenna.
From 3.1-3.3 GHz, the band is allocated for space research (active) and
earth exploration satellite (active) in addition to radiolocation
services. Id. There are 17 non-federal radiolocation licenses below 3.3
GHz, held by power companies and municipalities.
Among the non-federal users already operating on these frequencies
are hundreds of experimental licenses, including special temporary
authorizations (STAs), active throughout the 3.1-3.55 GHz band.
Experimental STAs may be requested for operation of a conventional
experimental radio service station for a temporary period of no longer
than six months. 47 CFR 5.54(a)(2), 5.61. A current list of active
experimental authorizations throughout the 3.1-3.55 GHz band can be
found via the Office of Engineering and Technology's Experimental
Licensing System Generic Search, available at https://apps.fcc.gov/oetcf/els/reports/GenericSearch.cfm. These licenses and STAs, pursuant
to part 5 of the Commission's rules, may be granted for a broad range
of research and experimentation purposes but such operations are on a
non-interference basis (i.e., if an experimental facility should cause
interference, the licensee is required to discontinue operation. 47 CFR
5.3, 5.84. Many of the recurring STAs in the band enable short-term use
of these or other frequencies to add additional capacity during
sporting events.
In light of the statutory provisions contained in the MOBILE NOW
Act, the Wireless Telecommunications Bureau in February 2019 imposed a
freeze on accepting and processing applications for new or expanded
part 90 Radiolocation Service operations in the 3.1-3.55 GHz band to
``maintain a stable spectral environment in a band that is under active
consideration for possible alternative use.'' Temporary Freeze on Non-
Federal Applications in the 3100-3550 MHz Band, WT Docket No. 19-39,
Public Notice, 34 FCC Rcd 19 (WTB Feb. 22, 2019).
A. Removal of Non-Federal Allocations
In this NPRM, the Commission proposes to remove the non-federal
allocations for the 3.3-3.55 GHz band and relocate incumbent non-
federal users out of the band. The Commission notes that the 3.3-3.55
GHz band has been the focus for 5G use by standards setting
organizations and in other countries, and the Commission thus believes
our focus on this band would promote international harmonization. The
Commission also notes that NTIA has identified the top 100 megahertz in
the 3.45-3.55 GHz band as the most promising portion for making new
spectrum available for commercial use, and therefore expects that band
will be the Commission's first priority. The Commission also seeks
comment on transition and protection mechanisms for non-federal
incumbent operators.
The Commission proposes to eliminate the non-federal radiolocation
services allocation in the 3.3-3.55 GHz band and the non-federal
amateur allocation in the 3.3-3.5 GHz. Specifically, the Commission
proposes to remove these non-federal allocations from the Table of
Frequency Allocations in section 2.106 of the rules, 47 CFR 2.106, and
make conforming rule changes in parts 90 and 97, 47 CFR parts 90 and
97. The proposed removal is an initial step toward potential future
shared use between Federal operations and flexible use commercial
services, in furtherance of the Commission's obligations under the
MOBILE NOW Act to identify spectrum for mobile and fixed wireless use
and to work with NTIA to evaluate this band for potential shared use.
As the Commission has recognized in other proceedings, mid-band
spectrum is well-suited for next generation wireless broadband services
given the combination of favorable propagation characteristics (as
compared to high bands) and the opportunity for additional channel re-
use (as compared to low bands). As a general matter, the Commission
considers clearing spectrum for flexible use to be a priority when it
is feasible to do so. Where it has not been feasible, the Commission
has attempted to introduce sharing. As demonstrated by the commercial
interest in the adjacent 3.5 GHz band, as well as the extensive use of
experimental licenses and STAs operating in the 3.1-3.55 GHz band
throughout 2019, flexible-use operations in the 3 GHz band hold
substantial promise.
By taking the initial step needed to clear the band of allocations
for non-federal incumbents, the Commission furthers its continued
efforts to make more mid-band spectrum potentially available to support
next generation wireless networks--consistent with the mandate of the
MOBILE NOW Act. The Commission seeks comment on this proposal.
B. Future of Incumbent Non-Federal Operations
The Commission seeks comment on appropriate relocation options for
incumbent non-federal users, either to the 3.1-3.3 GHz band or to other
frequencies. Which other frequencies might be appropriate to
accommodate the current and future uses of the band? Should the
Commission consider different frequencies for different licensees
depending on their specific needs? For example, are there different
considerations that the Commission should take into account in
considering alternate frequencies for the relatively low-power
operations in the 3.3-3.5 GHz band and the high-power weather radar
operations in the 3.5-3.55 GHz band? The Commission believes that
moving the high-power weather radars in particular may benefit
operations in the adjacent 3.55-3.7 GHz band by minimizing the
potential for harmful interference from the non-federal radars to
Citizens Broadband Radio Service operations.
The Commission seeks comment on relocating non-federal licensees to
another band. What band would be most appropriate? For example, if
relocated to the 3.1-3.3 GHz band, the Commission would propose that
these licensees would continue to operate on a secondary basis to
Federal operations, consistent with the current allocations in the
band. The Commission seeks comment on whether this proposal is the most
efficient and appropriate scheme for future use of the band and also
seeks comment on how best to balance the interests of existing
licensees in the 3.3-3.55 GHz band with potentially preparing the band
for possible future shared use between Federal incumbents and
commercial wireless services, if feasible. And the Commission seeks
comment on how to ensure that non-federal secondary operations in the
3.1-3.3 GHz band will
[[Page 3581]]
continue to protect Federal radar systems. Commenters should precisely
describe proposed approaches and explain the costs and benefits of
their proposals.
With respect to amateur operations, is there sufficient existing
amateur spectrum in other bands that can support the operations
currently conducted in the 3.3-3.5 GHz band? The Commission notes that
the 3.40-3.41 GHz segment is designated for communications to and from
amateur satellites. 47 CFR 97.207-97.211. The Commission seeks comment
on: The extent to which the band is used for this purpose, whether
existing satellites can operate on other amateur satellite bands, and
on an appropriate timeframe for terminating these operations in this
band.
The Commission also seeks comment generally on the transition
mechanism and process for relocating existing non-federal users. How
can the Commission expedite and incentivize the transition of existing
operations? What is a reasonable timeframe to transition the
operations? Should these licenses sunset at the end of the existing
license term, or at another date certain? What are the potential costs
to non-federal incumbent licensees to relocate their operations to
another band as compared to the benefits of preparing the band for
future shared use? What technical characteristics of non-federal
licensee's equipment should factor into our relocation considerations
(e.g., tunability, bandwidth, operational power, etc.)? How should non-
federal incumbent licensees be compensated for their relocation costs?
Should their current status, i.e., secondary to Federal radiolocation
services, factor into any relocation considerations, including cost
reimbursement?
Procedural Matters
Ex Parte Rules. The proceeding this NPRM initiates shall be treated
as a ``permit-but-disclose'' proceeding in accordance with the
Commission's ex parte rules. 47 CFR 1.1200 et seq. Persons making ex
parte presentations must file a copy of any written presentation or a
memorandum summarizing any oral presentation within two business days
after the presentation (unless a different deadline applicable to the
Sunshine period applies). Persons making oral ex parte presentations
are reminded that memoranda summarizing the presentation must (1) list
all persons attending or otherwise participating in the meeting at
which the ex parte presentation was made, and (2) summarize all data
presented and arguments made during the presentation. If the
presentation consisted in whole or in part of the presentation of data
or arguments already reflected in the presenter's written comments,
memoranda or other filings in the proceeding, the presenter may provide
citations to such data or arguments in his or her prior comments,
memoranda, or other filings (specifying the relevant page and/or
paragraph numbers where such data or arguments can be found) in lieu of
summarizing them in the memorandum. Documents shown or given to
Commission staff during ex parte meetings are deemed to be written ex
parte presentations and must be filed consistent with rule 1.1206(b).
In proceedings governed by rule 1.49(f) or for which the Commission has
made available a method of electronic filing, written ex parte
presentations and memoranda summarizing oral ex parte presentations,
and all attachments thereto, must be filed through the electronic
comment filing system available for that proceeding, and must be filed
in their native format (e.g., .doc, .xml, .ppt, searchable .pdf).
Participants in this proceeding should familiarize themselves with the
Commission's ex parte rules.
Comment Filing Procedures. Pursuant to Sec. Sec. 1.415 and 1.419
of the Commission's rules, 47 CFR 1.415, 1.419, interested parties may
file comments and reply comments on or before the dates indicated on
the first page of this document. Comments may be filed using the
Commission's Electronic Comment Filing System (ECFS). See Electronic
Filing of Documents in Rulemaking Proceedings, 63 FR 24121 (1998).
Electronic Filers: Comments may be filed electronically
using the internet by accessing the ECFS: http://apps.fcc.gov/ecfs/.
Paper Filers: Parties who choose to file by paper must
file an original and one copy of each filing. If more than one docket
or rulemaking number appears in the caption of this proceeding, filers
must submit two additional copies for each additional docket or
rulemaking number.
Filings can be sent by hand or messenger delivery, by commercial
overnight courier, or by first-class or overnight U.S. Postal Service
mail. All filings must be addressed to the Commission's Secretary,
Office of the Secretary, Federal Communications Commission.
All hand-delivered or messenger-delivered paper filings
for the Commission's Secretary must be delivered to FCC Headquarters at
445 12th St. SW, Room TW-A325, Washington, DC 20554. The filing hours
are 8:00 a.m. to 7:00 p.m. All hand deliveries must be held together
with rubber bands or fasteners. Any envelopes and boxes must be
disposed of before entering the building.
Commercial overnight mail (other than U.S. Postal Service
Express Mail and Priority Mail) must be sent to 9050 Junction Drive,
Annapolis Junction, MD 20701.
U.S. Postal Service first-class, Express, and Priority
mail must be addressed to 445 12th Street SW, Washington, DC 20554.
People with Disabilities: To request materials in accessible
formats for people with disabilities (braille, large print, electronic
files, audio format), send an email to [email protected] or call the
Consumer & Governmental Affairs Bureau at 202-418-0530 (voice), 202-
418-0432 (tty).
Initial Regulatory Flexibility Act Analysis
As required by the Regulatory Flexibility Act of 1980 (RFA), the
Commission has prepared an Initial Regulatory Flexibility Analysis
(IRFA) of the possible significant economic impact on small entities of
the policies and rules proposed in the NPRM. It requests written public
comment on the IRFA, contained at Appendix B to the NPRM. Comments must
be filed in accordance with the same deadlines as comments filed in
response to the NPRM as set forth on the first page of this document,
and have a separate and distinct heading designating them as responses
to the IRFA. The Commission's Consumer and Governmental Affairs Bureau,
Reference Information Center, will send a copy of the NPRM, including
the IRFA, to the Chief Counsel for Advocacy of the Small Business
Administration.
Initial Paperwork Reduction Analysis
This document contains proposed information collection
requirements. The Commission, as part of its continuing effort to
reduce paperwork burdens, invites the general public and the Office of
Management and Budget (OMB) to comment on the information collection
requirements contained in this document, as required by the Paperwork
Reduction Act of 1995, Public Law 104-13. In addition, pursuant to the
Small Business Paperwork Relief Act of 2002, Public Law 107-198, see 44
U.S.C. 3506(c)(4), the Commission seeks specific comment on how it
might further reduce the information collection burden for small
[[Page 3582]]
business concerns with fewer than 25 employees.
Ordering Clauses
It is ordered, pursuant to the authority found in sections 1, 2,
4(i), 303, 316, and 1502 of the Communications Act of 1934, 47 U.S.C.
151, 152, 154(i), 303, 316, and 1502, and section 1.411 of the
Commission's Rules, 47 CFR 1.411, that this Notice of Proposed
Rulemaking is hereby adopted.
It is further ordered that the Commission's Consumer and
Governmental Affairs Bureau, Reference Information Center, shall send a
copy of this Notice of Proposed Rulemaking, including the Initial
Regulatory Flexibility Analysis, to the Chief Counsel for Advocacy of
the Small Business Administration.
List of Subjects
47 CFR Part 2
Table of Frequency Allocations, Telecommunications.
47 CFR Part 90
Radio.
47 CFR Part 97
Radio, Satellites.
Federal Communications Commission.
Cecilia Sigmund,
Federal Register Liaison Officer, Office of the Secretary.
Proposed Rules
For the reasons discussed in the preamble, the Federal
Communications Commission proposes to amend 47 CFR parts 2, 90, and 97
as follows:
PART 2--FREQUENCY ALLOCATIONS AND RADIO TREATY MATTERS; GENERAL
RULES AND REGULATIONS
0
1. The authority citation for part 2 continues to read as follows:
Authority: 47 U.S.C. 154, 302a, 303, and 336, unless otherwise
noted.
0
2. Section 2.106, the Table of Frequency Allocations, is amended as
follows:
0
a. Pages 40 and 41 are revised.
0
b. In the list of United States (US) Footnotes, footnote US108 is
revised.
0
c. In the list of Federal Government (G) Footnotes, footnotes G2 and
G59 are revised.
Sec. 2.106 Table of Frequency Allocations.
The revisions read as follows:
* * * * *
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United States (US) Footnotes
* * * * *
US108 In the band 10-10.5 GHz, survey operations, using
transmitters with a peak power not to exceed five watts into the
antenna, may be authorized for Federal and non-Federal use on a
secondary basis to other Federal radiolocation operations.
* * * * *
Federal Government (G) Footnotes
* * * * *
G2 In the bands 216.965-216.995 MHz, 420-450 MHz (except as
provided for in G129), 890-902 MHz, 928-942 MHz, 1300-1390 MHz,
2310-2390 MHz, 2417-2450 MHz, 2700-2900 MHz, 5650-5925 MHz, and
9000-9200 MHz, use of the Federal radiolocation service is
restricted to the military services.
* * * * *
G59 In the bands 902-928 MHz, 3100-3300 MHz, 3550-3650 MHz,
5250-5350 MHz, 8500-9000 MHz, 9200-9300 MHz, 13.4-14.0 GHz, 15.7-
17.7 GHz and 24.05-24.25 GHz, all Federal non-military radiolocation
shall be secondary to military radiolocation, except in the sub-band
15.7-16.2 GHz airport surface detection equipment (ASDE) is
permitted on a co-equal basis subject to coordination with the
military departments.
* * * * *
PART 90--PRIVATE LAND MOBILE RADIO SERVICES
0
3. The authority citation for part 90 continues to read as follows:
Authority: 47 U.S.C. 154(i), 161, 303(g), 303(r), 332(c)(7),
1401-1473.
Sec. 90.103 [Amended]
0
4. In Sec. 90.103, amend the table in paragraph (b) by removing the
entries of ``3300 to 3500'' MHz and ``3500 to 3550'' MHz bands.
PART 97--AMATEUR RADIO SERVICE
0
5. The authority citation for part 97 continues to read as follows:
Authority: 47 U.S.C. 151-155, 301-609, unless otherwise noted.
0
6. In Sec. 97.207, revise paragraph (c)(2) to read as follows:
Sec. 97.207 Space station.
* * * * *
(c) * * *
(2) The 7.0-7.1 MHz, 14.00-14.25 MHz, 144-146 MHz, 435-438 MHz,
2400-2450 MHz, 5.83-5.85 GHz, 10.45-10.50 GHz, and 24.00-24.05 GHz
segments.
* * * * *
0
7. In Sec. 97.209, revise paragraph (b)(2) to read as follows:
Sec. 97.209 Earth station.
* * * * *
(b) * * *
(2) The 7.0-7.1 MHz, 14.00-14.25 MHz, 144-146 MHz, 435-438 MHz,
1260-1270 MHz and 2400-2450 MHz, 5.65-5.67 GHz, 10.45-10.50 GHz and
24.00-24.05 GHz segments.
0
8. In Sec. 97.211, revise paragraph (c)(2) to read as follows:
Sec. 97.211 Space telecommand station.
* * * * *
(c) * * *
(2) The 7.0-7.1 MHz, 14.00-14.25 MHz, 144-146 MHz, 435-438 MHz,
1260-1270 MHz and 2400-2450 MHz, 5.65-5.67 GHz, 10.45-10.50 GHz and
24.00-24.05 GHz segments.
* * * * *
0
9. In Sec. 97.301, revise the table in paragraph (a) to read as
follows:
Sec. 97.301 Authorized frequency bands.
* * * * *
(a) * * *
----------------------------------------------------------------------------------------------------------------
ITU Region 1 ITU Region 2 ITU Region 3 Sharing requirements
Wavelength band --------------------------------------------------- see Sec. 97.303
MHz MHz MHz (paragraph)
----------------------------------------------------------------------------------------------------------------
VHF
----------------------------------------------------------------------------------------------------------------
6 m............................... ............... 50-54 50-54 (a).
2 m............................... 144-146 144-148 144-148 (a), (k).
1.25 m............................ ............... 219-220 ............... (l).
Do................................ ............... 222-225 ............... (a).
----------------------------------------------------------------------------------------------------------------
UHF
----------------------------------------------------------------------------------------------------------------
70 cm............................. 430-440 420-450 430-440 (a), (b), (m).
33 cm............................. ............... 902-928 ............... (a), (b), (e), (n).
23 cm............................. 1240-1300 1240-1300 1240-1300 (b), (d), (o).
13 cm............................. 2300-2310 2300-2310 2300-2310 (d), (p).
Do................................ 2390-2450 2390-2450 2390-2450 (d), (e), (p).
----------------------------------------------------------------------------------------------------------------
GHz GHz GHz
----------------------------------------------------------------------------------------------------------------
SHF
----------------------------------------------------------------------------------------------------------------
5 cm.............................. 5.650-5.850 5.650-5.925 5.650-5.850 (a), (b), (e), (r).
3 cm.............................. 10.0-10.5 10.0-10.5 10.0-10.5 (a), (b), (k).
1.2 cm............................ 24.00-24.25 24.00-24.25 24.00-24.25 (b), (d), (e).
----------------------------------------------------------------------------------------------------------------
EHF
----------------------------------------------------------------------------------------------------------------
6 mm.............................. 47.0-47.2 47.0-47.2 47.0-47.2 .........................
4 mm.............................. 76-81 76-81 76-81 (c), (f), (s).
2.5 mm............................ 122.25-123.00 122.25-123.00 122.25-123.00 (e), (t).
2 mm.............................. 134-141 134-141 134-141 (c), (f).
1 mm.............................. 241-250 241-250 241-250 (c), (e), (f).
Above 275 Above 275 Above 275 (f).
----------------------------------------------------------------------------------------------------------------
[[Page 3586]]
0
10. In Sec. 97.303, revise paragraphs (b) and (f) and remove and
reserve paragraph (q) as follows:
Sec. 97.303 Frequency sharing requirements.
* * * * *
(b) Amateur stations transmitting in the 70 cm band, the 33 cm
band, the 23 cm band, the 5 cm band, the 3 cm band, or the 24.05-24.25
GHz segment must not cause harmful interference to, and must accept
interference from, stations authorized by the United States Government
in the radiolocation service.
* * * * *
(f) Amateur stations transmitting in the following segments must
not cause harmful interference to radio astronomy stations: 76-81 GHz,
136-141 GHz, 241-248 GHz, 275-323 GHz, 327-371 GHz, 388-424 GHz, 426-
442 GHz, 453-510 GHz, 623-711 GHz, 795-909 GHz, or 926-945 GHz. In
addition, amateur stations transmitting in the following segments must
not cause harmful interference to stations in the Earth exploration-
satellite service (passive) or the space research service (passive):
275-286 GHz, 296-306 GHz, 313-356 GHz, 361-365 GHz, 369-392 GHz, 397-
399 GHz, 409-411 GHz, 416-434 GHz, 439-467 GHz, 477-502 GHz, 523-527
GHz, 538-581 GHz, 611-630 GHz, 634-654 GHz, 657-692 GHz, 713-718 GHz,
729-733 GHz, 750-754 GHz, 771-776 GHz, 823-846 GHz, 850-854 GHz, 857-
862 GHz, 866-882 GHz, 905-928 GHz, 951-956 GHz, 968-973 GHz and 985-990
GHz.
* * * * *
(q) [Reserved]
* * * * *
Sec. 97.305 [Amended]
0
11. In Sec. 97.305, amend the SHF portion of the table in paragraph
(c) by removing the entry of ``9 cm band''.
[FR Doc. 2020-00535 Filed 1-21-20; 8:45 am]
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