[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:
* * * * *
BILLING CODE 6712-01-P

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[GRAPHIC] [TIFF OMITTED] TP22JA20.004


[[Page 3584]]


[GRAPHIC] [TIFF OMITTED] TP22JA20.005

BILLING CODE 6712-01-C
* * * * *

[[Page 3585]]

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]
 BILLING CODE 6712-01-P