[Federal Register Volume 85, Number 197 (Friday, October 9, 2020)]
[Rules and Regulations]
[Pages 64062-64069]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2020-22528]



[[Page 64062]]

-----------------------------------------------------------------------

FEDERAL COMMUNICATIONS COMMISSION

47 CFR Parts 2, 90, and 97

[WT Docket No. 19-348; FCC 20-138; FRS 17120]


Facilitating Shared Use in the 3100-3550 MHz Band

AGENCY: Federal Communications Commission.

ACTION: Final rule.

-----------------------------------------------------------------------

SUMMARY: In this document, the Commission adopts changes to its rules 
to prepare the 3.45-3.55 GHz band for commercial wireless services. It 
removes the secondary, non-federal allocations in the 3.3-3.55 GHz band 
for radiolocation services and the amateur radio service. These 
services will continue in alternate spectrum; radiolocation operations 
will be moved to the 2.9-3.0 GHz band, already home to similar 
operations, and amateur licensees will be able to relocate their 
operations to other frequencies already available for amateur 
operations. Clearing this band of secondary services will allow the 
Commission to auction the 3.45-3.55 GHz band for commercial wireless 
services on a co-primary basis with federal radionavigation and 
radiolocation operations.

DATES: Effective November 9, 2020.

FOR FURTHER INFORMATION CONTACT: Joyce Jones, Wireless 
Telecommunications Bureau, Mobility Division, (202) 418-1327 or 
[email protected], or Ira Keltz, Office of Engineering and 
Technology, (202) 418-0616 or [email protected].

SUPPLEMENTARY INFORMATION: This is a summary of the Report and Order in 
WT Docket No. 19-348, FCC 20-138, adopted September 30, 2020, and 
released October 2, 2020. The full text of the Report and Order is 
available for public inspection at the following internet address: 
https://docs.fcc.gov/public/attachments/FCC-20-138A1.pdf. Alternative 
formats are available for people with disabilities (Braille, large 
print, electronic files, audio format), by sending an email to 
[email protected] or calling the Consumer and Governmental Affairs Bureau 
at 202-418-0530 (voice) or 202-418-0432 (TTY).

Final Regulatory Flexibility Analysis

    The Regulatory Flexibility Act of 1980, as amended (RFA), requires 
that an agency prepare a regulatory flexibility analysis for notice and 
comment rulemakings, unless the agency certifies that ``the rule will 
not, if promulgated, have a significant economic impact on a 
substantial number of small entities.'' Accordingly, the Commission has 
prepared a Final Regulatory Flexibility Analysis (FRFA) concerning the 
possible impact of the rule changes contained in this Report and Order 
on small entities. As required by the Regulatory Flexibility Act, an 
Initial Regulatory Flexibility Analysis (IRFA) was incorporated in the 
Notice of Proposed Rulemaking (NPRM) released in December 2019 in this 
proceeding (85 FR 3579, January 22, 2020). The Commission sought 
written public comment on the proposals in the NPRM, including comments 
on the IRFA. No comments were filed addressing the IRFA. This FRFA 
conforms to the RFA. The Commission will send a copy of the Report and 
Order, Order of Proposed Modification, and Orders, including the FRFA, 
to the Chief Counsel for Advocacy of the Small Business Administration.

Paperwork Reduction Act

    This document does not contain new or modified information 
collection requirements subject to the Paperwork Reduction Act of 1995, 
Public Law 104-13. In addition, therefore, it does not contain any new 
or modified information collection burden for small business concerns 
with fewer than 25 employees, pursuant to the Small Business Paperwork 
Relief Act of 2002, Public Law 107-198, see 44 U.S.C. 3506(c)(4).

Congressional Review Act

    The Commission will send a copy of the Report and Order to Congress 
and the Government Accountability Office pursuant to the Congressional 
Review Act, see 5 U.S.C. 801(a)(1)(A).

Synopsis

I. Introduction

    1. In the Report and Order the Commission continues to execute its 
comprehensive strategy to Facilitate America's Superiority in 5G 
Technology (the 5G FAST Plan). It builds on efforts to unleash 
additional much-needed mid-band spectrum for flexible use, focusing on 
the 3100-3550 MHz band. Continued technological developments make 3 GHz 
spectrum ideal for next generation wireless services, including 5G, and 
the repurposing of 3.5 GHz and 3.7 GHz band spectrum presents an 
opportunity to make a large contiguous block of mid-band spectrum 
available for commercial use. Collectively, the 3.45-3.55 GHz band and 
neighboring 3.5 GHz and 3.7 GHz bands could offer 530 megahertz of mid-
band spectrum for flexible use.
    2. The Commission therefore acts now to prepare the 3.45-3.55 GHz 
band for such future use. The Report and Order adopts the Commission's 
2019 proposal to remove the secondary, non-federal allocations from the 
3.3-3.55 GHz band as a first step toward future sharing between federal 
incumbents and commercial operations. It expects that this action, in 
tandem with continued work by the Department of Defense (DoD) and other 
federal partners, will allow for agencies to file transition plans no 
later than April 2021, and for commercial operations to begin in early 
2022.

II. Background

    3. The lower 3 GHz band--and the 3450 MHz to 3550 MHz portion of 
the band (3.45-3.55 GHz band) in particular--has been targeted as 
spectrum to support 5G both here and abroad, and assessed within the 
federal government, across the legislative and executive branches, as 
well as within the Commission. The National Telecommunications and 
Information Administration (NTIA) identified the 3450-3550 MHz spectrum 
band as a potential candidate for shared use between federal incumbents 
and commercial services two years ago. In 2018, Congress passed the 
Fiscal Year 2018 omnibus spending bill, which directed NTIA to work 
with the Commission on identifying sharing opportunities in the 3.1-
3.55 GHz band.
    4. In December 2019, the Commission adopted a Notice of Proposed 
Rulemaking that proposed to clear non-federal secondary allocations 
from the 3.3-3.5 GHz band as a preliminary step toward potential future 
shared use between federal incumbents and commercial users of the band. 
In June 2020, pursuant to its obligations under the Commercial Spectrum 
Enhancement Act, the Commission notified the NTIA of its plan to 
commence an auction in December 2021 for licenses in 100 megahertz of 
the 3400-3550 MHz band. There has also been a broad and consistent 
effort by international governing bodies and global standards setting 
organizations to review the suitability of several frequency bands for 
next generation 5G wireless services, including the lower 3 GHz band. 
The Commission's continued efforts to promote flexible use licensing in 
the band will help to promote international harmonization.
    5. In 2020, the White House and the DoD formed America's Mid-Band 
Initiative Team (AMBIT) with the goal of making 100 megahertz of 
contiguous mid-band spectrum available in the 3.45-3.55 GHz band for 
full commercial

[[Page 64063]]

use. Under the agreement that was reached as part of the AMBIT study 
process, the DoD expects to enable commercial 5G systems to operate at 
full power throughout almost all the contiguous United States. The DoD 
would also require access to the spectrum during times of national 
emergency.
    6. 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 primary federal radiolocation 
services. The DoD operates high-powered defense radar systems on fixed, 
mobile, shipborne, and airborne platforms in this band. From 3.1-3.3 
GHz, the band is also allocated for federal and non-federal space 
research (active) and earth exploration satellite (active) in addition 
to radiolocation services.
    7. There are 17 non-federal radiolocation licenses in the portion 
of the band below 3.3 GHz, which are held by power companies and 
municipalities. Between 3.3 GHz and 3.55 GHz, there are only eight 
active non-federal radiolocation licenses, which are being used for a 
variety of commercial and industrial radiolocation services. In 
addition, non-federal amateur services operate in the 3.3-3.5 GHz 
portion of the band pursuant to a secondary allocation and must not 
cause harmful interference to operations such as radio astronomy 
stations and stations authorized by other nations for radiolocation 
service. The 3.5-3.55 GHz portion of the band is also allocated for 
federal aeronautical radionavigation services. In addition, the Radio 
Astronomy Service makes use of 3260-3267 MHz, 3332-3339 MHz, and 
3345.8-3352.5 MHz. Also among the non-federal users operating in the 
3.1-3.55 GHz band are holders of hundreds of non-federal experimental 
licenses, including special temporary authorizations (STAs). These 
experimental licenses and STAs are issued pursuant to part 5 of the 
Commission's rules and may be granted for a broad range of research and 
experimentation purposes, but experimental licenses and STAs must 
operate on a non-interference basis.
    8. The band immediately above 3.1-3.55 GHz is authorized for 
commercial wireless operations. In 2015, the Commission established the 
Citizens Broadband Radio Service in the 3.55-3.7 GHz band (3.5 GHz 
band) for shared use between new commercial wireless operations and 
incumbent operations--including military radar systems, non-federal FSS 
earth stations, and, for a limited time, grandfathered wireless 
broadband licensees in the 3.65-3.7 GHz band. The primary allocation 
for federal radiolocation operations continues below 3.1 GHz, with 
secondary non-federal radiolocation operations in this spectrum as 
well.

III. Report and Order

A. Clearing the 3.3-3.55 GHz Band of Secondary, Non-Federal Allocations

    9. In its December 2019 Notice of Proposed Rulemaking, the 
Commission proposed to eliminate the non-federal radiolocation service 
allocations in the 3.3-3.55 GHz band, as well as the non-federal 
amateur allocation in the 3.3-3.5 GHz band. Both are secondary users of 
the band. The Commission finds that removing the existing secondary 
non-federal allocations from the 3.3-3.55 GHz band and clearing these 
non-federal operations from the band is in the public interest, and 
therefore adopts this proposal. Because the DoD and NTIA agree that 
commercial users operating pursuant to flexible use licenses can be 
accommodated in the 3.45-3.55 GHz band at full power, and given 
continued interest in the 3.3-3.45 GHz band for future sharing for 
flexible use licenses, retaining the secondary non-federal allocations 
across this spectrum would hinder the Commission's ability to offer 
flexible use licensing in the future and would undermine the intensive 
and efficient use of valuable mid-band spectrum. The Commission will 
allow secondary non-federal licensees operating as of the effective 
date of this Report and Order to continue to operate in the 3.45-3.55 
GHz band while it finalizes plans to reallocate spectrum in the band. 
Authorization for these operations will sunset on a date consistent 
with the first possible grant of flexible use authorizations to new 
users in that portion of the band. The Commission revises the Table of 
Allocations accordingly.
    10. The Commission considers clearing spectrum for flexible use to 
be a priority when it is feasible to do so. Spectrum that has been 
cleared to the greatest extent possible provides maximum flexibility in 
future uses, ensuring intensive and efficient use of that spectrum 
going forward. Spectrum encumbrances, on the other hand, constrain the 
potential of future uses of that spectrum, deter investment in the 
band, and undermine the public interest benefits of the relicensing 
process. Given the ever-increasing demand for wireless spectrum for 
broadband access and the particular need for additional mid-band 
spectrum for those services, such spectrum should be made available for 
exclusive, as opposed to shared, non-federal use where possible.
    11. The Commission has broad authority under the Communications Act 
to modify its rules governing use of radio spectrum, and specific 
authority to allocate spectrum so as to provide flexibility of use. 
Under the Commission's rules, secondary spectrum users cannot claim 
protection from primary operations, including those subsequently 
licensed by the Commission, and they are subject to losing their 
spectrum rights if the primary operations in the band change at a later 
date.
    12. From a technical perspective, the removal of secondary, non-
federal licensees from the 3.3-3.55 GHz band is necessary given the 
incompatibility of radiolocation and amateur operations with ubiquitous 
mobile and fixed broadband services, which are likely the primary uses 
pursuant to flexible use licenses. Existing federal use of this band is 
sporadic and geographically localized, which has created a spectral 
environment well-suited to the coexistence of radiolocation and amateur 
operations. By contrast, nationwide broadband services operate at all 
times in virtually all areas and would provide these secondary 
operations with little opportunity for meaningful, interference-free 
operations. Further, we expect that, if the incumbents were to try to 
maintain some degree of secondary operations, the dense and growing 
deployment of base stations providing wide area mobile services on a 
primary basis using all frequencies in the band would make such efforts 
on the part of secondary, co-channel systems too tenuous. Commenters 
agree that we should not permit continued secondary operations if 
flexible use licenses are to be used for 5G and other forms of 
nationwide wireless broadband. The Commission concludes that such 
secondary. Secondary systems could not operate without creating 
significant interference risks both to their own operations and to 
primary flexible use services.
    13. Clearing this band of encumbrances will ensure that it is used 
intensely and efficiently, create a spectral environment that will 
support wireless broadband operations, and promote commercial interest 
and investment in the band. Current non-federal secondary radiolocation 
uses--particularly high-power weather radar systems--are incompatible 
with the anticipated future use of the band, so our actions today are a 
necessary predicate to repurposing the 3.45-3.55 GHz band for flexible 
use services. Sunsetting the secondary non-federal

[[Page 64064]]

allocations will prevent adjacent-channel issues and preserve the 
possibility of additional clearing for flexible use licensing below 
3.45 GHz, furthering the public interest. Deciding to relocate these 
non-federal users at this time will facilitate timely advance planning 
to accommodate the needs of all existing and future federal and non-
federal users--a complex undertaking posing technical and financial 
issues that the Commission will need to work with relevant stakeholders 
to resolve. This action will increase investment in communications 
services and systems and technological development by providing maximum 
opportunities for deployment of flexible use services, while continuing 
to provide spectrum for these secondary operations.
    14. This decision notwithstanding, secondary non-federal 
radiolocation licensees and amateur license holders operating as of the 
effective date of this Report and Order may continue operating while 
the Commission finalizes plans to reallocate spectrum in the 3.45-3.55 
GHz band. Authorization for these operations will sunset on a date 
consistent with the first possible grant of flexible use authorizations 
to new users in that portion of the band. For example, if we adopt a 
licensing scheme that will result in an auction to assign licenses, 
secondary use would sunset within 90 days of the close of the auction. 
The Table of Allocations is revised accordingly. There are hundreds of 
experimental licenses, including experimental STAs, active throughout 
the 3.1-3.55 GHz band at any given time. Going forward, these 
operations will be permitted here under the same limitations as they 
are in other bands licensed for flexible use--including that they must 
operate on a non-interference basis.

B. Relocation of Secondary, Non-Federal Radiolocation Operations

    15. The Commission removes the secondary, non-federal radiolocation 
allocation in the 3.3-3.55 GHz band. In relocating these operations, 
their current 50-megahertz allocation will be continued, along with 
their secondary status. Secondary, non-federal radiolocation licensees 
operating as of the effective date of this Report and Order may, 
however, continue to operate in this band until authorization for such 
operations are sunset as described above. Radiolocation authorization 
will sunset on a date consistent with the first possible grant of 
flexible use authorizations to new users in that portion of the band 
(e.g., 90 days from the close of the auction if the Commission adopts a 
licensing scheme that will result in an auction to assign licenses).
    16. Although spectrum above 3.45 GHz is the current focus for 
flexible use operations, secondary non-federal radiolocation operations 
will not be allowed to continue in the spectrum between 3.3 GHz and 
3.45 GHz. Rather, in order to prevent cross-service, adjacent channel 
interference to new operations and to prepare the band for future 
relicensing, all secondary radiolocation operations in the 3.3-3.55 GHz 
band will be required to relocate to the 2.9-3.0 GHz band by a date 
certain that will be set by subsequent Commission action in this 
proceeding. Spectrum below 3.0 GHz is the preferable location for these 
operations, and will allow radiolocation operators to provide the same 
S-band (2-4 GHz) radar services as they do at 3.3-3.55 GHz and will 
minimize adjacent channel interference to potential future flexible use 
licenses.
    17. Commenters currently holding these radiolocation licenses agree 
with relocation below 3.1 GHz, and no commenters object or offer any 
alternative means by which flexible use licensing could move forward in 
this band. Given the ongoing consideration of the entire 3.1-3.55 GHz 
band for future flexible use licenses, the Commission finds it is 
unwise to relocate secondary radiolocation operations to the lower 
portion of this band, i.e., 3.1-3.3 GHz. We also agree with commenters 
that identified spectrum below 3.1 GHz as a preferable location for 
these operations. In order to minimize adjacent channel interference to 
potential future flexible use licenses, however, we find that moving 
these operations to spectrum below 3.0 GHz is preferable to placing 
them in the 3.0-3.1 GHz band. Since the 2.9-3.0 GHz band already hosts 
non-federal radiolocation operations on a secondary basis, including 
the NEXRAD weather radar system operated by the National Weather 
Service, the band should be able to accommodate these relocated 
operations without running the risk of causing adjacent channel 
interference to flexible use licenses. NBCUniversal agrees with this 
conclusion, and no commenter disagrees. There is also no dispute in the 
record that existing equipment can be upgraded to support operations in 
this lower S-band spectrum, which should reduce the expense and 
complexity involved in the relocation. In relocating these operations, 
we will preserve their current 50-megahertz allocation and retain their 
secondary status.

C. Sunset of Secondary Amateur Allocation

    18. The Commission removes the amateur allocation from the 3.3-3.5 
GHz band. As it did with radiolocation operations, the Commission 
adopts changes to its rules today that provide for the sunset of the 
secondary amateur allocation in the band, but allow continued use of 
the band for amateur operations, pending resolution of the issues 
raised in the Further Notice. Secondary non-federal amateur licensees 
operating in this band as of the effective date of this Report and 
Order may continue while the Commission finalizes plans to reallocate 
spectrum in the 3.45-3.55 GHz band. Authorizations will sunset on a 
date consistent with the first possible grant of flexible use 
authorizations to new users in that portion of the band--for example, 
90 days after the close of the auction if the Commission adopt a 
licensing scheme that will result in an auction to assign licenses. The 
Table of Allocations is revised accordingly.
    19. Clearing all secondary operations, including amateur 
operations, from this spectrum will allow us to maximize the band for 
potential flexible use operations in the future. Further, to prevent 
adjacent-channel issues and to preserve the possibility of additional 
clearing for flexible use licensing below 3.45 GHz, sunsetting the 
secondary amateur allocation from the entire 3.3-3.5 GHz portion of the 
band is in the public interest. Amateur stations in this band are 
licensed on a shared basis. However, only amateur service operators 
with privileges for transmitting in this band based on their license 
class may operate stations on this spectrum. The class of a given 
operator's license determines on which of the many amateur frequencies 
it may operate, and amateurs with access to the 3.3-3.5 GHz band also 
have access to a large number of other bands. These include bands with 
similar characteristics and operations such as the 2.39-2.45 GHz and 
5.65-5.925 GHz bands, as well as dozens of others. Due to the unique 
nature of the licensing of the amateur service, the Commission does not 
provide for relocation of these operations in the same way as for 
radiolocation operations. Instead, amateur operators may choose for 
themselves whether to continue these operations in alternate spectrum, 
and which available spectrum to use.
    20. Notwithstanding the utility of amateur operations in this band, 
operators that chose to construct networks in this band did so despite 
the fact that the amateur allocation was

[[Page 64065]]

secondary and entirely subject to current or future primary operations. 
As part 97 of our rules makes clear, amateur operations are a 
noncommercial, voluntary service. Amateur stations are permitted to 
operate in many different bands; amateur stations operating in the 3 
GHz band have several other nearby bands available to them with similar 
propagation characteristics, such as the nearby 2 GHz band and the 5 
GHz band. After the authorization to operate sunsets for secondary 
amateur licensees here, amateur stations will continue to have 
available these and other bands that are allocated for amateur use.

VI. Ordering Clauses

    21. It is ordered, pursuant to sections 1, 4(i), 157, 301, 303, 
307, 308, 309, 310, and 316, of the Communications Act of 1934, as 
amended, as well as the mobile now Act, Public Law 115-141, 132 Stat. 
1098, Div. P, Title VI, Sec.  603 (Mar. 23, 2018), 47 U.S.C. 151, 
154(i), 157, 301, 303, 307, 308, 309, 310,
    22. It is further ordered that the amendments of parts 2, 90, and 
97 of the Commission's rules, as set forth in Appendix A, are adopted, 
effective thirty (30) days after publication in the Federal Register.
    23. It is further ordered that the Commission's Consumer and 
Governmental Affairs Bureau, Reference Information Center, shall send a 
copy of this Report and Order and Further Notice of Proposed 
Rulemaking, including the Final and Initial Regulatory Flexibility 
Analyses, to the Chief Counsel for Advocacy of the Small Business 
Administration.
    24. It is further ordered that the Commission shall send a copy of 
this Report and Order in a report to be sent to Congress and the 
Government Accountability Office pursuant to the Congressional Review 
Act, see 5 U.S.C. 801(a)(1)(A).

Lists of Subjects in 47 CFR Parts 2, 90, and 97

    Frequency allocations, Private land mobile radio services, the 
Amateur radio service.

Federal Communications Commission.
Marlene Dortch,
Secretary, Federal Communications Commission.

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. Revise pages 40 and 41.
0
b. In the list of United States (US) Footnotes, revise footnote US108.
    The revisions read as follows:


Sec.  2.106   Table of Frequency Allocations.

* * * * *
BILLING CODE 6712-01-P

[[Page 64066]]

[GRAPHIC] [TIFF OMITTED] TR09OC20.010


[[Page 64067]]


[GRAPHIC] [TIFF OMITTED] TR09OC20.011

BILLING CODE 6712-01-C

[[Page 64068]]

United States (US) Footnotes

* * * * *
    US108 In the band 3300-3550 MHz, notwithstanding removal of the 
non-Federal allocations from these bands in [insert FCC item number], 
secondary non-Federal radiolocation and secondary amateur license 
holders operating as of [insert the effective date the Commission's 
Report and Order] may continue to operate on a secondary basis while 
the Commission finalizes plans to reallocate spectrum in the 3.45-3.55 
GHz band. Authorization for these operations will sunset on a future 
date certain, consistent with the first possible grant of flexible use 
authorizations to new users in that portion of the band. The date by 
which non-Federal stations in these services will be required to cease 
operations in the band 3300-3550 MHz will be set by the Commission in a 
subsequent decision in its proceeding. 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.
* * * * *

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 for the ``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. Amend Sec.  97.207 by revising 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. Amend Sec.  97.209 by revising paragraph (b)(9) 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. Amend Sec.  97.211 by revising 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) * * *

--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                                                                              Sharing requirements see
        Wavelength band                   ITU Region 1                  ITU Region 2                  ITU Region 3            Sec.   97.303 (paragraph)
--------------------------------------------------------------------------------------------------------------------------------------------------------
VHF                              MHz..........................  MHz.........................  MHz.........................
--------------------------------------------------------------------------------------------------------------------------------------------------------
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                              MHz..........................  MHz.........................  MHz.........................
--------------------------------------------------------------------------------------------------------------------------------------------------------
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).
--------------------------------------------------------------------------------------------------------------------------------------------------------
SHF                              GHz..........................  GHz.........................  GHz.........................
--------------------------------------------------------------------------------------------------------------------------------------------------------
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                              GHz..........................  GHz.........................  GHz.........................
--------------------------------------------------------------------------------------------------------------------------------------------------------
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).
--------------------------------------------------------------------------------------------------------------------------------------------------------

* * * * *

0
10. In Sec.  97.303, revise paragraphs (b) and (f) and remove and 
reserve paragraph (q) to read as follows:


Sec.  97.303   Frequency sharing requirements.

* * * * *

[[Page 64069]]

    (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.
* * * * *


Sec.  97.305   [Amended]

0
11. In Sec.  97.305, amend the table in paragraph (c) by removing the 
entry for the 9 cm band under SHF.

[FR Doc. 2020-22528 Filed 10-8-20; 8:45 am]
BILLING CODE 6712-01-P