Appendix B: Final Rules

For the reasons discussed in the preamble, the Federal Communications
Commission amends 47 CFR parts 2 and 25 as follows:

**PART 2 \-- FREQUENCY ALLOCATIONS AND RADIO TREATY MATTERS; GENERAL
RULES AND REGULATIONS**

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.

2.  Section 2.106, the Table of Frequency Allocations, is amended to
    read as follows:

a\. Revise pages 43, 44, 45, 46, 48, 49, and 52.

> b\. In the list of United States (US) Footnotes, add footnote US380.

**[§ 2.106 Table of Frequency Allocations.]{.underline}**

The revisions and additions read as follows:

\* \* \* \* \*

+-----------+-----------+-----------+-----------+-----------+---------+
| 1430-1610 |           |           |           |           | Page 43 |
| MHz (UHF) |           |           |           |           |         |
+-----------+-----------+-----------+-----------+-----------+---------+
| Inte      |           |           | United    |           | FCC     |
| rnational |           |           | States    |           | Rule    |
| Table     |           |           | Table     |           | Part(s) |
+-----------+-----------+-----------+-----------+-----------+---------+
| Region 1  | Region 2  | Region 3  | Federal   | No        |         |
|           |           |           | G         | n-Federal |         |
|           |           |           | overnment | G         |         |
|           |           |           |           | overnment |         |
+-----------+-----------+-----------+-----------+-----------+---------+
| 1429-1452 | 1429-1452 |           | 14        | See       | See     |
|           |           |           | 29.5-1432 | previous  | p       |
| FIXED     | FIXED     |           |           | page      | revious |
|           |           |           |           |           | page    |
| MOBILE    | MOBILE    |           |           |           |         |
| except    | 5.343     |           |           |           |         |
| aer       |           |           |           |           |         |
| onautical |           |           |           |           |         |
|           |           |           |           |           |         |
| Mobile    |           |           |           |           |         |
+-----------+-----------+-----------+-----------+-----------+---------+
|           |           |           | 5.341     | 1430-1432 | Private |
|           |           |           | US352     |           | Land    |
|           |           |           |           | FIXED     | Mobile  |
|           |           |           |           | (t        | (90)    |
|           |           |           |           | elemetry) |         |
|           |           |           |           |           | P       |
|           |           |           |           | LAND      | ersonal |
|           |           |           |           | MOBILE    | (95)    |
|           |           |           |           | (t        |         |
|           |           |           |           | elemetry) |         |
|           |           |           |           |           |         |
|           |           |           |           | FIXED-    |         |
|           |           |           |           | SATELLITE |         |
|           |           |           |           |           |         |
|           |           |           |           | (space-   |         |
|           |           |           |           | to-Earth) |         |
|           |           |           |           | US368     |         |
|           |           |           |           |           |         |
|           |           |           |           | 5.341     |         |
|           |           |           |           | US350     |         |
|           |           |           |           | US352     |         |
+-----------+-----------+-----------+-----------+-----------+---------+
|           |           |           | 1432-1435 | 1432-1435 | W       |
|           |           |           |           |           | ireless |
|           |           |           | 5.341     | FIXED     |         |
|           |           |           | US361     |           | Communi |
|           |           |           |           | MOBILE    | cations |
|           |           |           |           | except    | (27)    |
|           |           |           |           | aer       |         |
|           |           |           |           | onautical |         |
|           |           |           |           |           |         |
|           |           |           |           | mobile    |         |
|           |           |           |           |           |         |
|           |           |           |           | 5.341     |         |
|           |           |           |           | US361     |         |
+-----------+-----------+-----------+-----------+-----------+---------+
| 5.341     | 5.341     |           | 1435-1525 |           | A       |
| 5.342     |           |           |           |           | viation |
|           |           |           | MOBILE    |           | (87)    |
|           |           |           | (aer      |           |         |
|           |           |           | onautical |           |         |
|           |           |           | t         |           |         |
|           |           |           | elemetry) |           |         |
+-----------+-----------+-----------+-----------+-----------+---------+
| 1452-1492 | 1452-1492 |           |           |           |         |
|           |           |           |           |           |         |
| FIXED     | FIXED     |           |           |           |         |
|           |           |           |           |           |         |
| MOBILE    | MOBILE    |           |           |           |         |
| except    | 5.343     |           |           |           |         |
| aer       |           |           |           |           |         |
| onautical | BRO       |           |           |           |         |
|           | ADCASTING |           |           |           |         |
| mobile    | 5.345     |           |           |           |         |
|           | 5.347     |           |           |           |         |
| BRO       |           |           |           |           |         |
| ADCASTING | BROA      |           |           |           |         |
| 5.345     | DCASTING- |           |           |           |         |
|           | SATELLITE |           |           |           |         |
| 5.347     | 5.345     |           |           |           |         |
|           | 5.347     |           |           |           |         |
| BROA      |           |           |           |           |         |
| DCASTING- | 5.341     |           |           |           |         |
|           | 5.344     |           |           |           |         |
| SATELLITE |           |           |           |           |         |
| 5.345     |           |           |           |           |         |
| 5.347     |           |           |           |           |         |
|           |           |           |           |           |         |
| 5.341     |           |           |           |           |         |
| 5.342     |           |           |           |           |         |
+-----------+-----------+-----------+-----------+-----------+---------+
|           |           |           |           |           |         |
+-----------+-----------+-----------+-----------+-----------+---------+
| 1492-1525 | 1492-1525 | 1492-1525 | 5.341     |           |         |
|           |           |           | US78      |           |         |
| FIXED     | FIXED     | FIXED     |           |           |         |
|           |           |           |           |           |         |
| MOBILE    | MOBILE    | MOBILE    |           |           |         |
| except    | 5.343     |           |           |           |         |
| aer       |           | 5.341     |           |           |         |
| onautical | MOBILE-   | 5.348A    |           |           |         |
|           | SATELLITE |           |           |           |         |
| mobile    |           |           |           |           |         |
|           | (space-   |           |           |           |         |
| 5.341     | to-Earth) |           |           |           |         |
| 5.342     | 5.348A    |           |           |           |         |
|           |           |           |           |           |         |
|           | 5.341     |           |           |           |         |
|           | 5.344     |           |           |           |         |
|           | 5.348     |           |           |           |         |
+-----------+-----------+-----------+-----------+-----------+---------+
| 1525-1530 | 1525-1530 | 1525-1530 | 1525-1530 |           | Sa      |
|           |           |           |           |           | tellite |
| SPACE     | SPACE     | SPACE     | MOBILE-   |           |         |
| OPERATION | OPERATION | OPERATION | SATELLITE |           | Communi |
|           |           |           | (space-   |           | cations |
| (space-   | (space-   | (space-   | to-Earth) |           | (25)    |
| to-Earth) | to-Earth) | to-Earth) | US380     |           |         |
|           |           |           |           |           | A       |
| FIXED     | MOBILE-   | FIXED     | Mobile    |           | viation |
|           | SATELLITE |           | (aer      |           | (87)    |
| MOBILE-   |           | MOBILE-   | onautical |           |         |
| SATELLITE | (space-   | SATELLITE | t         |           |         |
|           | to-Earth) |           | elemetry) |           |         |
| (space-   | 5.351A    | (space-   |           |           |         |
| to-Earth) |           | to-Earth) | 5.341     |           |         |
| 5.351A    | Earth     | 5.351A    | 5.351     |           |         |
|           | exp       |           | US78      |           |         |
| Earth     | loration- | Earth     |           |           |         |
| exp       | satellite | exp       |           |           |         |
| loration- |           | loration- |           |           |         |
| satellite | Fixed     | satellite |           |           |         |
|           |           |           |           |           |         |
| Mobile    | Mobile    | Mobile    |           |           |         |
| except    | 5.343     | 5.349     |           |           |         |
| aer       |           |           |           |           |         |
| onautical | 5.341     | 5.341     |           |           |         |
|           | 5.351     | 5.351     |           |           |         |
| mobile    | 5.354     | 5.352A    |           |           |         |
| 5.349     |           | 5.354     |           |           |         |
|           |           |           |           |           |         |
| 5.341     |           |           |           |           |         |
| 5.342     |           |           |           |           |         |
| 5.350     |           |           |           |           |         |
| 5.351     |           |           |           |           |         |
| 5.352A    |           |           |           |           |         |
| 5.354     |           |           |           |           |         |
+-----------+-----------+-----------+-----------+-----------+---------+

+-----------+-----------------------+-----------------------+---------+
| 1530-1535 | 1530-1535             | 1530-1535             |         |
|           |                       |                       |         |
| SPACE     | SPACE OPERATION       | MOBILE-SATELLITE      |         |
| OPERATION | (space-to-Earth)      | (space-to-Earth)      |         |
|           |                       | US380                 |         |
| (space-   | MOBILE-SATELLITE      |                       |         |
| to-Earth) | (space-to-Earth)      | MARITIME              |         |
|           | 5.351A 5.353A         | MOBILE-SATELLITE      |         |
| MOBILE-   |                       | (space-to-Earth)      |         |
| SATELLITE | Earth                 |                       |         |
| (space-   | exploration-satellite | Mobile (aeronautical  |         |
|           |                       | telemetry)            |         |
| to-Earth) | Fixed                 |                       |         |
| 5.351A    |                       | 5.341 5.351 US78      |         |
| 5.353A    | Mobile 5.343          | US315                 |         |
|           |                       |                       |         |
| Earth     | 5.341 5.351 5.354     |                       |         |
| exp       |                       |                       |         |
| loration- |                       |                       |         |
| satellite |                       |                       |         |
|           |                       |                       |         |
| Fixed     |                       |                       |         |
|           |                       |                       |         |
| Mobile    |                       |                       |         |
| except    |                       |                       |         |
| aer       |                       |                       |         |
| onautical |                       |                       |         |
|           |                       |                       |         |
| mobile    |                       |                       |         |
|           |                       |                       |         |
| 5.341     |                       |                       |         |
| 5.342     |                       |                       |         |
| 5.351     |                       |                       |         |
| 5.354     |                       |                       |         |
+-----------+-----------------------+-----------------------+---------+
| 1535-1559 |                       | 1535-1544             | Sa      |
|           |                       |                       | tellite |
| MOBILE-   |                       | MOBILE-SATELLITE      |         |
| SATELLITE |                       | (space-to-Earth)      | Communi |
| (space-   |                       | US380                 | cations |
| to-Earth) |                       |                       | (25)    |
| 5.351A    |                       | MARITIME              |         |
|           |                       | MOBILE-SATELLITE      | M       |
|           |                       | (space-to-Earth)      | aritime |
|           |                       |                       | (80)    |
|           |                       | 5.341 5.351 US315     |         |
+-----------+-----------------------+-----------------------+---------+
|           |                       | 1544-1545             |         |
|           |                       |                       |         |
|           |                       | MOBILE-SATELLITE      |         |
|           |                       | (space-to-Earth)      |         |
|           |                       |                       |         |
|           |                       | 5.341 5.356           |         |
+-----------+-----------------------+-----------------------+---------+
|           |                       | 1545-1549.5           | A       |
|           |                       |                       | viation |
|           |                       | AERONAUTICAL          | (87)    |
|           |                       | MOBILE-SATELLITE (R)  |         |
|           |                       |                       |         |
|           |                       | (space-to-Earth)      |         |
|           |                       |                       |         |
|           |                       | Mobile-satellite      |         |
|           |                       | (space-to-Earth)      |         |
|           |                       | US380                 |         |
|           |                       |                       |         |
|           |                       | 5.341 5.351 US308     |         |
|           |                       | US309                 |         |
+-----------+-----------------------+-----------------------+---------+
|           |                       | 1549.5-1558.5         |         |
|           |                       |                       |         |
|           |                       | AERONAUTICAL          |         |
|           |                       | MOBILE-SATELLITE (R)  |         |
|           |                       |                       |         |
|           |                       | (space-to-Earth)      |         |
|           |                       |                       |         |
|           |                       | MOBILE-SATELLITE      |         |
|           |                       | (space-to-Earth)      |         |
|           |                       | US380                 |         |
|           |                       |                       |         |
|           |                       | 5.341 5.351 US308     |         |
|           |                       | US309                 |         |
+-----------+-----------------------+-----------------------+---------+
| 5.341     |                       | 1558.5-1559           |         |
| 5.351     |                       |                       |         |
| 5.353A    |                       | AERONAUTICAL          |         |
| 5.354     |                       | MOBILE-SATELLITE (R)  |         |
| 5.355     |                       |                       |         |
| 5.356     |                       | (space-to-Earth)      |         |
| 5.357     |                       |                       |         |
| 5.357A    |                       | 5.341 5.351 US308     |         |
| 5.359     |                       | US309 US380           |         |
| 5.362A    |                       |                       |         |
+-----------+-----------------------+-----------------------+---------+
| 1559-1610 |                       | 1559-1610             | Note:   |
|           |                       |                       | The     |
| AER       |                       | AERONAUTICAL          | NTIA    |
| ONAUTICAL |                       | RADIONAVIGATION       | Manual  |
| RADION    |                       |                       | (f      |
| AVIGATION |                       | RADI                  | ootnote |
|           |                       | ONAVIGATION-SATELLITE | G126)   |
| RADIONA   |                       | (space-to-Earth)      | states  |
| VIGATION- |                       |                       | that    |
| SATELLITE |                       | 5.341 US208 US260     | diffe   |
| (space-   |                       |                       | rential |
| to-Earth) |                       |                       | GPS     |
| (space-   |                       |                       | s       |
| to-space) |                       |                       | tations |
| 5.329A    |                       |                       | may be  |
|           |                       |                       | aut     |
| 5.341     |                       |                       | horized |
| 5.362B    |                       |                       | in the  |
| 5.362C    |                       |                       | 15      |
| 5.363     |                       |                       | 59-1610 |
|           |                       |                       | MHz     |
|           |                       |                       | band,   |
|           |                       |                       | but the |
|           |                       |                       | FCC has |
|           |                       |                       | not yet |
|           |                       |                       | ad      |
|           |                       |                       | dressed |
|           |                       |                       | this    |
|           |                       |                       | fo      |
|           |                       |                       | otnote. |
+-----------+-----------------------+-----------------------+---------+

Page 44

+-----------+-----------+-----------+-----------+-----------+---------+
| 1610-1670 |           |           |           |           | Page 45 |
| MHz (UHF) |           |           |           |           |         |
+-----------+-----------+-----------+-----------+-----------+---------+
| Inte      |           |           | United    |           | FCC     |
| rnational |           |           | States    |           | Rule    |
| Table     |           |           | Table     |           | Part(s) |
+-----------+-----------+-----------+-----------+-----------+---------+
| Region 1  | Region 2  | Region 3  | Federal   | No        |         |
|           |           |           | G         | n-Federal |         |
|           |           |           | overnment | G         |         |
|           |           |           |           | overnment |         |
+-----------+-----------+-----------+-----------+-----------+---------+
| 16        | 16        | 16        | 16        |           | Sa      |
| 10-1610.6 | 10-1610.6 | 10-1610.6 | 10-1610.6 |           | tellite |
|           |           |           |           |           |         |
| MOBILE-   | MOBILE-   | MOBILE-   | MOBILE-   |           | Communi |
| SATELLITE | SATELLITE | SATELLITE | SATELLITE |           | cations |
|           |           |           | (Earth-   |           | (25)    |
| (Earth-   | (Earth-   | (Earth-   | to-space) |           |         |
| to-space) | to-space) | to-space) | US319     |           | A       |
| 5.351A    | 5.351A    | 5.351A    | US380     |           | viation |
|           |           |           |           |           | (87)    |
| AER       | AER       | AER       | AER       |           |         |
| ONAUTICAL | ONAUTICAL | ONAUTICAL | ONAUTICAL |           |         |
|           |           |           | RADION    |           |         |
| RADION    | RADION    | RADION    | AVIGATION |           |         |
| AVIGATION | AVIGATION | AVIGATION | US260     |           |         |
|           |           |           |           |           |         |
| 5.341     | R         | R         | RADIODET  |           |         |
| 5.355     | ADIODETER | adiodeter | ERMINATIO |           |         |
| 5.359     | MINATION- | mination- | N-SATELLI |           |         |
| 5.363     |           | satellite | TE(Earth- |           |         |
| 5.364     | SATELLITE |           | to-space) |           |         |
| 5.366     | (         | (Earth-   |           |           |         |
| 5.367     | Earth-to- | to-space) | 5.341     |           |         |
| 5.368     |           |           | 5.364     |           |         |
| 5.369     | space)    | 5.341     | 5.366     |           |         |
| 5.371     |           | 5.355     | 5.367     |           |         |
| 5.372     | 5.341     | 5.359     | 5.368     |           |         |
|           | 5.364     | 5.364     | 5.372     |           |         |
|           | 5.366     | 5.366     | US208     |           |         |
|           | 5.367     | 5.367     |           |           |         |
|           | 5.368     | 5.368     |           |           |         |
|           | 5.370     | 5.369     |           |           |         |
|           | 5.372     | 5.372     |           |           |         |
+-----------+-----------+-----------+-----------+-----------+---------+
| 1610      | 1610      | 1610      | 1610      |           |         |
| .6-1613.8 | .6-1613.8 | .6-1613.8 | .6-1613.8 |           |         |
|           |           |           |           |           |         |
| MOBILE-   | MOBILE-   | MOBILE-   | MOBILE-   |           |         |
| SATELLITE | SATELLITE | SATELLITE | SATELLITE |           |         |
|           |           |           | (Earth-   |           |         |
| (Earth-   | (Earth-   | (Earth-   | to-space) |           |         |
| to-space) | to-space) | to-space) | US319     |           |         |
| 5.351A    | 5.351A    | 5.351A    | US380     |           |         |
|           |           |           |           |           |         |
| RADIO     | RADIO     | RADIO     | RADIO     |           |         |
| ASTRONOMY | ASTRONOMY | ASTRONOMY | ASTRONOMY |           |         |
|           |           |           |           |           |         |
| AER       | AER       | AER       | AER       |           |         |
| ONAUTICAL | ONAUTICAL | ONAUTICAL | ONAUTICAL |           |         |
|           |           |           | RADION    |           |         |
| RADION    | RADION    | RADION    | AVIGATION |           |         |
| AVIGATION | AVIGATION | AVIGATION | US260     |           |         |
|           |           |           |           |           |         |
| 5.149     | R         | R         | R         |           |         |
| 5.341     | ADIODETER | adiodeter | ADIODETER |           |         |
| 5.355     | MINATION- | mination- | MINATION- |           |         |
| 5.359     |           | satellite | SATELLITE |           |         |
| 5.363     | SATELLITE |           | (Earth-   |           |         |
| 5.364     | (         | (Earth-   | to-space) |           |         |
| 5.366     | Earth-to- | to-space) |           |           |         |
| 5.367     |           |           | 5.149     |           |         |
| 5.368     | space)    | 5.149     | 5.341     |           |         |
| 5.369     |           | 5.341     | 5.364     |           |         |
| 5.371     | 5.149     | 5.355     | 5.366     |           |         |
| 5.372     | 5.341     | 5.359     | 5.367     |           |         |
|           | 5.364     | 5.364     | 5.368     |           |         |
|           | 5.366     | 5.366     | 5.372     |           |         |
|           | 5.367     | 5.367     | US208     |           |         |
|           | 5.368     | 5.368     |           |           |         |
|           | 5.370     | 5.369     |           |           |         |
|           | 5.372     | 5.372     |           |           |         |
+-----------+-----------+-----------+-----------+-----------+---------+
| 1613      | 1613      | 1613      | 1613      |           |         |
| .8-1626.5 | .8-1626.5 | .8-1626.5 | .8-1626.5 |           |         |
|           |           |           |           |           |         |
| MOBILE-   | MOBILE-   | MOBILE-   | MOBILE-   |           |         |
| SATELLITE | SATELLITE | SATELLITE | SATELLITE |           |         |
|           |           |           | (Earth-   |           |         |
| (Earth-   | (Earth-   | (Earth-   | to-space) |           |         |
| to-space) | to-space) | to-space) | US319     |           |         |
| 5.351A    | 5.351A    | 5.351A    |           |           |         |
|           |           |           | AER       |           |         |
| AER       | AER       | AER       | ONAUTICAL |           |         |
| ONAUTICAL | ONAUTICAL | ONAUTICAL | RADION    |           |         |
|           |           |           | AVIGATION |           |         |
| RADION    | RADION    | RADION    | US260     |           |         |
| AVIGATION | AVIGATION | AVIGATION |           |           |         |
|           |           |           | R         |           |         |
| Mobile-   | R         | Mobile-   | ADIODETER |           |         |
| satellite | ADIODETER | satellite | MINATION- |           |         |
|           | MINATION- | (         | SATELLITE |           |         |
| (space-   |           | space-to- | (Earth-   |           |         |
| to-Earth) | SATELLITE |           | to-space) |           |         |
|           | (         | Earth)    |           |           |         |
| 5.341     | Earth-to- |           | Mobile-   |           |         |
| 5.355     |           | R         | satellite |           |         |
| 5.359     | space)    | adiodeter | (space-   |           |         |
| 5.363     |           | mination- | to-Earth) |           |         |
| 5.364     | Mobile-   |           |           |           |         |
| 5.365     | satellite | satellite | 5.341     |           |         |
| 5.366     | (         | (Earth-   | 5.364     |           |         |
| 5.367     | space-to- | to-space) | 5.365     |           |         |
| 5.368     |           |           | 5.366     |           |         |
| 5.369     | Earth)    | 5.341     | 5.367     |           |         |
| 5.371     |           | 5.355     | 5.368     |           |         |
| 5.372     | 5.341     | 5.359     | 5.372     |           |         |
|           | 5.364     | 5.364     | US208     |           |         |
|           | 5.365     | 5.365     | US380     |           |         |
|           | 5.366     | 5.366     |           |           |         |
|           | 5.367     | 5.367     |           |           |         |
|           | 5.368     | 5.368     |           |           |         |
|           | 5.370     | 5.369     |           |           |         |
|           | 5.372     | 5.372     |           |           |         |
+-----------+-----------+-----------+-----------+-----------+---------+

+-----------------------------------+-----------------------+---------+
| 1626.5-1660                       | 1626.5-1645.5         | Sa      |
|                                   |                       | tellite |
| MOBILE-SATELLITE (Earth-to-space) | MOBILE-SATELLITE      |         |
| 5.351A                            | (Earth-to-space)      | Communi |
|                                   | US380                 | cations |
|                                   |                       | (25)    |
|                                   | MARITIME              |         |
|                                   | MOBILE-SATELLITE      | M       |
|                                   | (Earth-to-space)      | aritime |
|                                   |                       | (80)    |
|                                   | 5.341 5.351 US315     |         |
+-----------------------------------+-----------------------+---------+
|                                   | 1645.5-1646.5         |         |
|                                   |                       |         |
|                                   | MOBILE-SATELLITE      |         |
|                                   | (Earth-to-space)      |         |
|                                   |                       |         |
|                                   | 5.341 5.375           |         |
+-----------------------------------+-----------------------+---------+
|                                   | 1646.5-1651           | A       |
|                                   |                       | viation |
|                                   | AERONAUTICAL          | (87)    |
|                                   | MOBILE-SATELLITE (R)  |         |
|                                   |                       |         |
|                                   | (Earth-to-space)      |         |
|                                   |                       |         |
|                                   | Mobile-satellite      |         |
|                                   | (Earth-to-space)      |         |
|                                   | US380                 |         |
|                                   |                       |         |
|                                   | 5.341 5.351 US308     |         |
|                                   | US309                 |         |
+-----------------------------------+-----------------------+---------+
| 5.341 5.351 5.353A 5.354 5.355    | 1651-1660             |         |
| 5.357A 5.359 5.362A 5.374 5.375   |                       |         |
| 5.376                             | MOBILE-SATELLITE      |         |
|                                   | (Earth-to-space)      |         |
|                                   | US380                 |         |
|                                   |                       |         |
|                                   | AERONAUTICAL          |         |
|                                   | MOBILE-SATELLITE (R)  |         |
|                                   |                       |         |
|                                   | (Earth-to-space)      |         |
|                                   |                       |         |
|                                   | 5.341 5.351 US308     |         |
|                                   | US309                 |         |
+-----------------------------------+-----------------------+---------+
| 1660-1660.5                       | 1660-1660.5           |         |
|                                   |                       |         |
| MOBILE-SATELLITE (Earth-to-space) | AERONAUTICAL          |         |
| 5.351A                            | MOBILE-SATELLITE (R)  |         |
|                                   |                       |         |
| RADIO ASTRONOMY                   | (Earth-to-space)      |         |
|                                   |                       |         |
| 5.149 5.341 5.351 5.354 5.362A    | RADIO ASTRONOMY       |         |
| 5.376A                            |                       |         |
|                                   | 5.149 5.341 5.351     |         |
|                                   | US308 US309 US380     |         |
+-----------------------------------+-----------------------+---------+
| 1660.5-1668.4                     | 1660.5-1668.4         |         |
|                                   |                       |         |
| RADIO ASTRONOMY                   | RADIO ASTRONOMY US74  |         |
|                                   |                       |         |
| SPACE RESEARCH (passive)          | SPACE RESEARCH        |         |
|                                   | (passive)             |         |
| Fixed                             |                       |         |
|                                   | 5.341 US246           |         |
| Mobile except aeronautical mobile |                       |         |
|                                   |                       |         |
| 5.149 5.341 5.379 5.379A          |                       |         |
+-----------------------------------+-----------------------+---------+
| 1668.4-1670                       | 1668.4-1670           |         |
|                                   |                       |         |
| METEOROLOGICAL AIDS               | METEOROLOGICAL AIDS   |         |
|                                   | (radiosonde)          |         |
| FIXED                             |                       |         |
|                                   | RADIO ASTRONOMY US74  |         |
| MOBILE except aeronautical mobile |                       |         |
|                                   | 5.149 5.341 US99      |         |
| RADIO ASTRONOMY                   |                       |         |
|                                   |                       |         |
| 5.149 5.341                       |                       |         |
+-----------------------------------+-----------------------+---------+

Page 46

+-----------+-----------+-----------+-----------+-----------+---------+
| 5.149     |           |           | 1755-1850 | 1755-1850 |         |
| 5.341     |           |           |           |           |         |
| 5.385     |           |           | FIXED     |           |         |
| 5.386     |           |           |           |           |         |
| 5.387     |           |           | MOBILE    |           |         |
| 5.388     |           |           |           |           |         |
|           |           |           | G42       |           |         |
+-----------+-----------+-----------+-----------+-----------+---------+
|           |           |           | 1850-2025 | 1850-2000 | RF      |
|           |           |           |           |           | Devices |
|           |           |           |           | FIXED     | (15)    |
|           |           |           |           |           |         |
|           |           |           |           | MOBILE    | P       |
|           |           |           |           |           | ersonal |
|           |           |           |           |           |         |
|           |           |           |           |           | Communi |
|           |           |           |           |           | cations |
|           |           |           |           |           | (24)    |
|           |           |           |           |           |         |
|           |           |           |           |           | Fixed   |
|           |           |           |           |           | Mi      |
|           |           |           |           |           | crowave |
|           |           |           |           |           | (101)   |
+-----------+-----------+-----------+-----------+-----------+---------+
| 1930-1970 | 1930-1970 | 1930-1970 |           |           |         |
|           |           |           |           |           |         |
| FIXED     | FIXED     | FIXED     |           |           |         |
|           |           |           |           |           |         |
| MOBILE    | MOBILE    | MOBILE    |           |           |         |
| 5.388A    | 5.388A    | 5.388A    |           |           |         |
|           |           |           |           |           |         |
| 5.388     | Mobile-   | 5.388     |           |           |         |
|           | satellite |           |           |           |         |
|           |           |           |           |           |         |
|           | (Earth-   |           |           |           |         |
|           | to-space) |           |           |           |         |
|           |           |           |           |           |         |
|           | 5.388     |           |           |           |         |
+-----------+-----------+-----------+-----------+-----------+---------+
| 1970-1980 |           |           |           | NG177     |         |
|           |           |           |           |           |         |
| FIXED     |           |           |           |           |         |
|           |           |           |           |           |         |
| MOBILE    |           |           |           |           |         |
| 5.388A    |           |           |           |           |         |
|           |           |           |           |           |         |
| 5.388     |           |           |           |           |         |
+-----------+-----------+-----------+-----------+-----------+---------+
| 1980-2010 |           |           |           |           |         |
|           |           |           |           |           |         |
| FIXED     |           |           |           |           |         |
|           |           |           |           |           |         |
| MOBILE    |           |           |           |           |         |
|           |           |           |           |           |         |
| MOBILE-   |           |           |           |           |         |
| SATELLITE |           |           |           |           |         |
| (Earth-   |           |           |           |           |         |
| to-space) |           |           |           |           |         |
| 5.351A    |           |           |           |           |         |
|           |           |           |           |           |         |
| 5.388     |           |           |           |           |         |
| 5.389A    |           |           |           |           |         |
| 5.389B    |           |           |           |           |         |
| 5.389F    |           |           |           |           |         |
+-----------+-----------+-----------+-----------+-----------+---------+
|           |           |           |           | 2000-2020 | Sa      |
|           |           |           |           |           | tellite |
|           |           |           |           | MOBILE-   |         |
|           |           |           |           | SATELLITE | Communi |
|           |           |           |           |           | cations |
|           |           |           |           | (Earth-   | (25)    |
|           |           |           |           | to-space) |         |
|           |           |           |           | US380     |         |
+-----------+-----------+-----------+-----------+-----------+---------+
| 2010-2025 | 2010-2025 | 2010-2025 |           | NG156     |         |
|           |           |           |           |           |         |
| FIXED     | FIXED     | FIXED     |           |           |         |
|           |           |           |           |           |         |
| MOBILE    | MOBILE    | MOBILE    |           |           |         |
| 5.388A    |           | 5.388A    |           |           |         |
|           | MOBILE-   |           |           |           |         |
| 5.388     | SATELLITE | 5.388     |           |           |         |
|           |           |           |           |           |         |
|           | (Earth-   |           |           |           |         |
|           | to-space) |           |           |           |         |
|           |           |           |           |           |         |
|           | 5.388     |           |           |           |         |
|           | 5.389C    |           |           |           |         |
|           | 5.389D    |           |           |           |         |
|           | 5.389E    |           |           |           |         |
|           | 5.390     |           |           |           |         |
+-----------+-----------+-----------+-----------+-----------+---------+
|           |           |           |           | 2020-2025 |         |
|           |           |           |           |           |         |
|           |           |           |           | FIXED     |         |
|           |           |           |           |           |         |
|           |           |           |           | MOBILE    |         |
|           |           |           |           |           |         |
|           |           |           |           | NG177     |         |
+-----------+-----------+-----------+-----------+-----------+---------+
| 2025-2110 |           |           | 2025-2110 | 2025-2110 | TV      |
|           |           |           |           |           | Au      |
| SPACE     |           |           | SPACE     | FIXED     | xiliary |
| OPERATION |           |           | OPERATION | NG23      |         |
| (Earth-   |           |           |           | NG118     | Broad   |
| to-space) |           |           | (Earth-   |           | casting |
| (space-   |           |           | to-space) | MOBILE    | (74F)   |
| to-space) |           |           |           | 5.391     |         |
|           |           |           | (space-   |           | Cable   |
| EARTH     |           |           | to-space) | 5.392     | TV      |
| EXP       |           |           |           | US90      | Relay   |
| LORATION- |           |           | EARTH     | US222     | (78)    |
| SATELLITE |           |           | EXP       | US346     |         |
| (Earth-   |           |           | LORATION- | US347     | Local   |
| to-space) |           |           |           |           | TV      |
| (space-   |           |           | SATELLITE |           | Trans   |
| to-space) |           |           | (         |           | mission |
|           |           |           | Earth-to- |           |         |
| FIXED     |           |           |           |           | (101J)  |
|           |           |           | space)    |           |         |
| MOBILE    |           |           | (space-   |           |         |
| 5.391     |           |           | to-space) |           |         |
|           |           |           |           |           |         |
| SPACE     |           |           | SPACE     |           |         |
| RESEARCH  |           |           | RESEARCH  |           |         |
| (Earth-   |           |           | (Earth-   |           |         |
| to-space) |           |           |           |           |         |
| (space-   |           |           | to-space) |           |         |
| to-space) |           |           | (space-   |           |         |
|           |           |           | to-space) |           |         |
| 5.392     |           |           |           |           |         |
|           |           |           | 5.391     |           |         |
|           |           |           | 5.392     |           |         |
|           |           |           | US90      |           |         |
|           |           |           | US222     |           |         |
|           |           |           | US346     |           |         |
|           |           |           | US347     |           |         |
+-----------+-----------+-----------+-----------+-----------+---------+

Page 48

+-----------+-----------+-----------+-----------+-----------+---------+
| 2110-2345 |           |           |           |           | Page 49 |
| MHz (UHF) |           |           |           |           |         |
+-----------+-----------+-----------+-----------+-----------+---------+
| Inte      |           |           | United    |           | FCC     |
| rnational |           |           | States    |           | Rule    |
| Table     |           |           | Table     |           | Part(s) |
+-----------+-----------+-----------+-----------+-----------+---------+
| Region 1  | Region 2  | Region 3  | Federal   | No        |         |
|           |           |           | G         | n-Federal |         |
|           |           |           | overnment | G         |         |
|           |           |           |           | overnment |         |
+-----------+-----------+-----------+-----------+-----------+---------+
| 2110-2120 |           |           | 2110-2120 | 2110-2155 | D       |
|           |           |           |           |           | omestic |
| FIXED     |           |           | US252     | FIXED     | Public  |
|           |           |           |           | NG23      | Fixed   |
| MOBILE    |           |           |           |           |         |
| 5.388A    |           |           |           | MOBILE    | \(21\)  |
|           |           |           |           |           |         |
| SPACE     |           |           |           |           | Public  |
| RESEARCH  |           |           |           |           | Mobile  |
| (deep     |           |           |           |           | (22)    |
| space)    |           |           |           |           |         |
| (Earth-   |           |           |           |           | Fixed   |
| to-space) |           |           |           |           | Mi      |
|           |           |           |           |           | crowave |
| 5.388     |           |           |           |           | (101)   |
+-----------+-----------+-----------+-----------+-----------+---------+
| 2120-2160 | 2120-2160 | 2120-2170 | 2120-2200 | US252     |         |
|           |           |           |           |           |         |
| FIXED     | FIXED     | > FIXED   |           |           |         |
|           |           | >         |           |           |         |
| MOBILE    | MOBILE    | > MOBILE  |           |           |         |
| 5.388A    | 5.388A    | > 5.388A  |           |           |         |
|           |           |           |           |           |         |
| 5.388     | Mobile-   |           |           |           |         |
|           | satellite |           |           |           |         |
|           |           |           |           |           |         |
|           | (space-   |           |           |           |         |
|           | to-Earth) |           |           |           |         |
|           |           |           |           |           |         |
|           | 5.388     |           |           |           |         |
+-----------+-----------+-----------+-----------+-----------+---------+
|           |           |           |           | 2155-2160 | D       |
|           |           |           |           |           | omestic |
|           |           |           |           | FIXED     | Public  |
|           |           |           |           | NG23      | Fixed   |
|           |           |           |           |           |         |
|           |           |           |           |           | \(21\)  |
|           |           |           |           |           |         |
|           |           |           |           |           | Fixed   |
|           |           |           |           |           | Mi      |
|           |           |           |           |           | crowave |
|           |           |           |           |           | (101)   |
+-----------+-----------+-----------+-----------+-----------+---------+
| 2160-2170 | 2160-2170 | 5.388     |           | 2160-2180 | D       |
|           |           |           |           |           | omestic |
| FIXED     | FIXED     |           |           | FIXED     | Public  |
|           |           |           |           | NG23      | Fixed   |
| MOBILE    | MOBILE    |           |           | NG153     |         |
| 5.388A    |           |           |           |           | \(21\)  |
|           | MOBILE-   |           |           | MOBILE    |         |
| 5.388     | SATELLITE |           |           |           | Public  |
| 5.392A    |           |           |           |           | Mobile  |
|           | (space-   |           |           |           | (22)    |
|           | to-Earth) |           |           |           |         |
|           |           |           |           |           | Fixed   |
|           | 5.388     |           |           |           | Mi      |
|           | 5.389C    |           |           |           | crowave |
|           | 5.389D    |           |           |           | (101)   |
|           |           |           |           |           |         |
|           | 5.389E    |           |           |           |         |
|           | 5.390     |           |           |           |         |
+-----------+-----------+-----------+-----------+-----------+---------+
| 2170-2200 |           |           |           | NG178     |         |
|           |           |           |           |           |         |
| FIXED     |           |           |           |           |         |
|           |           |           |           |           |         |
| MOBILE    |           |           |           |           |         |
|           |           |           |           |           |         |
| MOBILE-   |           |           |           |           |         |
| SATELLITE |           |           |           |           |         |
| (space-   |           |           |           |           |         |
| to-Earth) |           |           |           |           |         |
| 5.351A    |           |           |           |           |         |
|           |           |           |           |           |         |
| 5.388     |           |           |           |           |         |
| 5.389A    |           |           |           |           |         |
| 5.389F    |           |           |           |           |         |
| 5.392A    |           |           |           |           |         |
+-----------+-----------+-----------+-----------+-----------+---------+
|           |           |           |           | 2180-2200 | Sa      |
|           |           |           |           |           | tellite |
|           |           |           |           | MOBILE-   |         |
|           |           |           |           | SATELLITE | Communi |
|           |           |           |           |           | cations |
|           |           |           |           | (space-   | (25)    |
|           |           |           |           | to-Earth) |         |
|           |           |           |           | US380     |         |
|           |           |           |           |           |         |
|           |           |           |           | NG23      |         |
|           |           |           |           | NG168     |         |
+-----------+-----------+-----------+-----------+-----------+---------+
| 2200-2290 |           |           | 2200-2290 | 2200-2290 |         |
|           |           |           |           |           |         |
| SPACE     |           |           | SPACE     |           |         |
| OPERATION |           |           | OPERATION |           |         |
| (space-   |           |           |           |           |         |
| to-Earth) |           |           | (space-   |           |         |
| (space-   |           |           | to-Earth) |           |         |
| to-space) |           |           |           |           |         |
|           |           |           | (space-   |           |         |
| EARTH     |           |           | to-space) |           |         |
| EXP       |           |           |           |           |         |
| LORATION- |           |           | EARTH     |           |         |
| SATELLITE |           |           | EXP       |           |         |
| (space-   |           |           | LORATION- |           |         |
| to-Earth) |           |           |           |           |         |
| (space-   |           |           | SATELLITE |           |         |
| to-space) |           |           | (         |           |         |
|           |           |           | space-to- |           |         |
| FIXED     |           |           |           |           |         |
|           |           |           | Earth)    |           |         |
| MOBILE    |           |           | (space-   |           |         |
| 5.391     |           |           | to-space) |           |         |
|           |           |           |           |           |         |
| SPACE     |           |           | FIXED     |           |         |
| RESEARCH  |           |           | (line     |           |         |
| (space-   |           |           | -of-sight |           |         |
| to-Earth) |           |           | only)     |           |         |
| (space-   |           |           |           |           |         |
| to-space) |           |           |           |           |         |
+-----------+-----------+-----------+-----------+-----------+---------+

+-----------+-----------+-----------+-----------+-----------+---------+
| 24        | 24        | 24        | 24        | 24        | ISM     |
| 83.5-2500 | 83.5-2500 | 83.5-2500 | 83.5-2500 | 83.5-2500 | Eq      |
|           |           |           |           |           | uipment |
| FIXED     | FIXED     | FIXED     | MOBILE-   | MOBILE-   | (18)    |
|           |           |           | SATELLITE | SATELLITE |         |
| MOBILE    | MOBILE    | MOBILE    |           |           | Sa      |
|           |           |           | (space-   | (space-   | tellite |
| MOBILE-   | MOBILE-   | MOBILE-   | to-Earth) | to-Earth) |         |
| SATELLITE | SATELLITE | SATELLITE | US319     | US319     | Communi |
|           |           |           |           |           | cations |
| (space-   | (space-   | (space-   | US380     | US380     | (25)    |
| to-Earth) | to-Earth) | to-Earth) |           |           |         |
| 5.351A    | 5.351A    | 5.351A    | R         | R         | Private |
|           |           |           | ADIODETER | ADIODETER | Land    |
| Radi      | RADI      | RADI      | MINATION- | MINATION- | Mobile  |
| olocation | OLOCATION | OLOCATION |           |           |         |
|           |           |           | SATELLITE | SATELLITE | \(90\)  |
| 5.150     | R         | R         | (         | (         |         |
| 5.371     | ADIODETER | adiodeter | space-to- | space-to- | Fixed   |
| 5.397     | MINATION- | mination- |           |           | Mi      |
| 5.398     |           | satellite | Earth)    | Earth)    | crowave |
| 5.399     | SATELLITE |           | 5.398     | 5.398     | (101)   |
| 5.400     | (         | (space-   |           |           |         |
| 5.402     | space-to- | to-Earth) | 5.150     | 5.150     |         |
|           |           | 5.398     | 5.402     | 5.402     |         |
|           | Earth)    |           | US41      | US41      |         |
|           | 5.398     | 5.150     |           | NG147     |         |
|           |           | 5.400     |           |           |         |
|           | 5.150     | 5.402     |           |           |         |
|           | 5.402     |           |           |           |         |
+-----------+-----------+-----------+-----------+-----------+---------+
| 2500-2520 | 2500-2520 |           | 2500-2655 | 2500-2655 | D       |
|           |           |           |           |           | omestic |
| FIXED     | FIXED     |           |           | FIXED     | Public  |
| 5.409     | 5.409     |           |           | 5.409     | Fixed   |
| 5.410     | 5.411     |           |           | 5.411     |         |
| 5.411     |           |           |           | US205     | \(21\)  |
|           | FIXED-    |           |           |           |         |
| MOBILE    | SATELLITE |           |           | FIXED-    | Au      |
| except    | (space-   |           |           | SATELLITE | xiliary |
| aer       | to-Earth) |           |           |           | Broad   |
| onautical | 5.415     |           |           | (space-   | casting |
|           |           |           |           | to-Earth) |         |
| mobile    | MOBILE    |           |           | NG102     | \(74\)  |
| 5.384A    | except    |           |           |           |         |
|           | aer       |           |           | MOBILE    |         |
| MOBILE-   | onautical |           |           | except    |         |
| SATELLITE | mobile    |           |           | aer       |         |
| (space-   | 5.384A    |           |           | onautical |         |
|           |           |           |           |           |         |
| to-Earth) | MOBILE-   |           |           | mobile    |         |
| 5.351A    | SATELLITE |           |           |           |         |
| 5.403     | (space-   |           |           | BROA      |         |
|           | to-Earth) |           |           | DCASTING- |         |
| 5.405     | 5.351A    |           |           |           |         |
| 5.407     | 5.403     |           |           | SATELLITE |         |
| 5.412     |           |           |           | NG101     |         |
| 5.414     | 5.404     |           |           |           |         |
|           | 5.407     |           |           |           |         |
|           | 5.414     |           |           |           |         |
|           | 5.415A    |           |           |           |         |
+-----------+-----------+-----------+-----------+-----------+---------+
| 2520-2655 | 2520-2655 | 2520-2535 |           |           |         |
|           |           |           |           |           |         |
| FIXED     | FIXED     | FIXED     |           |           |         |
| 5.409     | 5.409     | 5.409     |           |           |         |
| 5.410     | 5.411     | 5.411     |           |           |         |
| 5.411     |           |           |           |           |         |
|           | FIXED-    | FIXED-    |           |           |         |
| MOBILE    | SATELLITE | SATELLITE |           |           |         |
| except    |           |           |           |           |         |
| aer       | (space-   | (space-   |           |           |         |
| onautical | to-Earth) | to-Earth) |           |           |         |
|           | 5.415     | 5.415     |           |           |         |
| mobile    |           |           |           |           |         |
| 5.384A    | MOBILE    | MOBILE    |           |           |         |
|           | except    | except    |           |           |         |
| BROA      | aer       | aer       |           |           |         |
| DCASTING- | onautical | onautical |           |           |         |
|           |           |           |           |           |         |
| SATELLITE | mobile    | mobile    |           |           |         |
| 5.413     | 5.384A    | 5.384A    |           |           |         |
| 5.416     |           |           |           |           |         |
|           | BROA      | BROA      |           |           |         |
|           | DCASTING- | DCASTING- |           |           |         |
|           |           |           |           |           |         |
|           | SATELLITE | SATELLITE |           |           |         |
|           | 5.413     | 5.413     |           |           |         |
|           | 5.416     | 5.416     |           |           |         |
|           |           |           |           |           |         |
|           |           | 5.403     |           |           |         |
|           |           | 5.415A    |           |           |         |
+-----------+-----------+-----------+-----------+-----------+---------+
| 5.339     | 5.339     | 2535-2655 | 5.339     | 5.339     |         |
| 5.403     | 5.403     |           | US205     | US269     |         |
| 5.405     | 5.418B    | FIXED     | US269     |           |         |
| 5.412     | 5.418C    | 5.409     |           |           |         |
| 5.418     |           | 5.411     |           |           |         |
| 5.418B    |           |           |           |           |         |
| 5.418C    |           | MOBILE    |           |           |         |
|           |           | except    |           |           |         |
|           |           | aer       |           |           |         |
|           |           | onautical |           |           |         |
|           |           |           |           |           |         |
|           |           | mobile    |           |           |         |
|           |           | 5.384A    |           |           |         |
|           |           |           |           |           |         |
|           |           | BROA      |           |           |         |
|           |           | DCASTING- |           |           |         |
|           |           |           |           |           |         |
|           |           | SATELLITE |           |           |         |
|           |           | 5.413     |           |           |         |
|           |           | 5.416     |           |           |         |
|           |           |           |           |           |         |
|           |           | 5.339     |           |           |         |
|           |           | 5.418     |           |           |         |
|           |           | 5.418A    |           |           |         |
|           |           | 5.418B    |           |           |         |
|           |           | 5.418C    |           |           |         |
+-----------+-----------+-----------+-----------+-----------+---------+

Page 52

\* \* \* \* \*

UNITED STATES (US) FOOTNOTES

\* \* \* \* \*

US380 In the bands 1525-1544 MHz, 1545-1559 MHz, 1610-1645.5 MHz,
1646.5-1660.5 MHz, 2000-2020 MHz, 2180-2200 MHz, and 2483.5-2500 MHz, a
non-Federal Government licensee in the mobile-satellite service (MSS)
may also operate an ancillary terrestrial component in conjunction with
its MSS network, subject to the Commission's rules for ancillary
terrestrial components and subject to all applicable conditions and
provisions of its MSS authorization.

\* \* \* \* \*

**PART 25\--SATELLITE COMMUNICATIONS**

3.  The authority citation for Part 25 continues to read as follows:

AUTHORITY: 47 U.S.C. 701-744. Interprets or applies sec. 303, 47 U.S.C.
303. 47 U.S.C. sections 154, 301, 302, 303, 307, 309 and 332, unless
otherwise noted.

4.  Section 25.117 is amended to read as follows:

**[§ 25.117 Modification of station license.]{.underline}**

\* \* \* \* \*

\(f\) An application for modification of a space station license to add
an ancillary terrestrial component to an eligible satellite network will
be treated as a request for a minor modification if the particulars of
operations provided by the applicant comply with the criteria specified
in § 25.147.

\* \* \* \* \*

5.  Section 25.143 is amended to read as follows:

**[§ 25.143 Licensing provisions for the 1.6/2.4 GHz mobile-satellite
service and the 2 GHz mobile-satellite service.]{.underline}**

\* \* \* \* \*

\(i\) [Incorporation of ancillary terrestrial component base stations
into a 1.6/2.4 GHz mobile-satellite service network or a 2 GHz
mobile-satellite service network.]{.underline} Any licensee authorized
to construct and launch a 1.6/2.4 GHz or a 2 GHz mobile-satellite system
may construct ancillary terrestrial component (ATC) base stations as
defined in § 25.201 of this part at its own risk and subject to the
conditions specified in this subpart any time after commencing
construction of the mobile-satellite service system.

\(j\) [Pre-Operational Testing.]{.underline} An MSS ATC licensee may,
without further authority from the Commission, conduct equipment tests
for the purpose of making such adjustments and measurements as may be
necessary to assure compliance with the terms of the technical
provisions of its MSS license, its ATC authorization, the rules and
regulations in this Part and the applicable engineering standards. An
MSS licensee may not offer ATC service to the public for compensation
during pre-operational testing. In order to operate any ATC base
stations, such a licensee must meet all the requirements set forth in §
25.147 and must have been granted ATC authority through a modification
of its space station license.

\(k\) [Aircraft.]{.underline} ATC mobile terminals must be operated in
accordance with 25.136(a). All portable or hand-held transceiver units
(including transceiver units installed in other devices that are
themselves portable or hand-held) having operating capabilities in the
2000-2020/2180-2200 MHz or 1610-1626.5 MHz/2483.5-2500 MHz bands shall
bear the following statement in a conspicuous location on the device:
"This device may not be operated while on board aircraft. It must be
turned off at all times while on board aircraft."

\* \* \* \* \*

6.  Section 25.146 is amended to read as follows:

**[§ 25.146 Licensing provisions for the L-Band mobile-satellite
service.]{.underline}**

\* \* \* \* \*

\(g\) [Incorporation of ancillary terrestrial component base station
into an L-band Mobile-Satellite Service System.]{.underline} Any
licensee authorized to construct and launch an L-band mobile-satellite
system may construct ancillary terrestrial component (ATC) base stations
as defined in § 25.201 of this part at its own risk and subject to the
conditions specified in this subpart any time after commencing
construction of the mobile-satellite service system.

\(h\) [Pre-Operational Testing]{.underline}*.* An MSS ATC licensee may,
without further authority from the Commission, conduct equipment tests
for the purpose of making such adjustments and measurements as may be
necessary to assure compliance with the terms of the technical
provisions of its MSS license, its ATC authorization, the rules and
regulations in this Part and the applicable engineering standards. An
MSS licensee may not offer ATC service to the public for compensation
during pre-operational testing. In order to operate any ATC base
stations, such a licensee must meet all the requirements set forth in §
25.147 and must have been granted ATC authority through a modification
of its space station license.

\(i\) [Aircraft.]{.underline} All portable or hand-held transceiver
units (including transceiver units installed in other devices that are
themselves portable or hand-held) having operating capabilities in the
1626.5-1660.5 MHz and 1525-1559 MHz bands shall bear the following
statement in a conspicuous location on the device: "This device may not
be operated while on board aircraft. It must be turned off at all times
while on board aircraft."

\* \* \* \* \*

7.  New Section 25.147 is added to read as follows:

**[§ 25.147 Application requirements for ancillary terrestrial
components in the mobile-satellite service networks operating in the
1.5./1.6 GHz, 1.6/2.4 GHz and 2 GHz mobile-satellite
service.]{.underline}**

\(a\) Applicants for ancillary terrestrial component authority shall
demonstrate compliance with the following through certification or
explanatory technical exhibit, as appropriate:

> \(1\) ATC shall be deployed in the forward-band mode of operation
> whereby the ATC mobile terminals transmit in the MSS uplink bands and
> the ATC base stations transmit in the MSS downlink bands in portions
> of the 2000-2020 MHz/2180-2200 MHz bands (2 GHz band), the
> 1626.5-1660.5 MHz/1525-1559 MHz bands (L-band), and the 1610-1626.5
> MHz/2483.5-2500 MHz bands (Big LEO band).

\(2\) ATC operations shall be limited to certain frequencies:

> \(i\) In the 2000-2020 MHz/2180-2200 MHz bands (2 GHz MSS band), ATC
> operations are limited to the selected assignment of the 2 GHz MSS
> licensee that seeks ATC authority.
>
> \(ii\) In the 1626.5-1660.5 MHz/1525-1559 MHz bands (L-band), ATC
> operations are limited to the frequency assignments authorized and
> internationally coordinated for the MSS system of the MSS licensee
> that seeks ATC authority.
>
> \(iii\) In the 1610-1626.5 MHz/2483.5-2500 MHz bands (Big LEO band),
> ATC operations are limited to the 1610-1615.5 MHz, 1621.35-1626.5 MHz,
> and 2492.5-2498.0 MHz bands and to the specific frequencies authorized
> for use by the MSS licensee that seeks ATC authority.

(3) ATC operations shall not exceed the geographical coverage area of
    the mobile-satellite service network of the applicant for ATC
    authority.

(4) ATC base stations shall comply with all applicable antenna and
    structural clearance requirements established in Part 17 of the
    Commission's rules.

(5) ATC base stations and mobile terminals shall comply with Part 1 of
    the Commission's rules, Subpart I -- Procedures Implementing the
    National Environmental Policy Act of 1969, including the guidelines
    for human exposure to radio frequency electromagnetic fields as
    defined in §§ 1.1307(b) and 1.1310 of the Commission's rules for PCS
    networks.

(6) ATC base station operations shall use less than all available MSS
    frequencies when using all available frequencies for ATC base
    station operations would exclude otherwise available signals from
    MSS space-stations.

\(b\) Applicants for an ancillary terrestrial component shall
demonstrate compliance with the following criteria through
certification:

> \(1\) Geographic and Temporal Coverage.
>
> \(i\) For the 2 GHz MSS band, an applicant must demonstrate that it
> can provide space-segment service covering all 50 states, Puerto Rico,
> and the U.S. Virgin Islands one-hundred percent of the time,
> consistent with the coverage requirements for 2 GHz MSS GSO operators.
>
> \(ii\) For the L-band, an applicant must demonstrate that it can
> provide space-segment service covering all 50 states, Puerto Rico, and
> the U.S. Virgin Islands one-hundred percent of the time, unless it is
> not technically possible for the MSS operator to meet the coverage
> criteria from its orbital position.
>
> \(iii\) For the Big LEO band, an applicant must demonstrate that it
> can provide space-segment service (i) to all locations as far north as
> 70º North latitude and as far south as 55º South latitude for at least
> seventy-five percent of every 24-hour period, i.e., that at least one
> satellite will be visible above the horizon at an elevation angle of
> at least 5º for at least 18 hours each day, and (ii) on a continuous
> basis throughout the fifty states, Puerto Rico and the U.S. Virgin
> Islands, [i.e.]{.underline}, that at least one satellite will be
> visible above the horizon at an elevation angle of at least 5º at all
> times.

(2) Replacement Satellites.

> \(i\) Operational NGSO MSS ATC systems shall maintain an in-orbit
> spare satellite.
>
> \(ii\) Operational GSO MSS ATC systems shall maintain a spare
> satellite on the ground within one year of commencing operations and
> launch it into orbit during the next commercially reasonable launch
> window following a satellite failure.
>
> \(iii\) All MSS ATC licensees must report any satellite failures,
> malfunctions or outages that may require satellite replacement within
> ten days of their occurrence.

(3) Commercial availability. Mobile-satellite service must be
    commercially available (*viz.*, offering services for a fee) in
    accordance with the coverage requirements that pertain to each band
    as a prerequisite to an MSS licensee's offering ATC service.

(4) Integrated Services. MSS licensees shall offer an integrated service
    of MSS and MSS ATC. Applicants for MSS ATC may establish an
    integrated service offering by affirmatively demonstrating that:

> \(i\) The MSS ATC operator will use a dual-mode handset that can
> communicate with both the MSS network and the MSS ATC component to
> provide the proposed ATC service;or,
>
> \(ii\) Other evidence establishing that the MSS ATC operator will
> provide an integrated service offering to the public.

(5) In-band Operation.

> \(i\) In the 2 GHz MSS band, MSS ATC is limited to an MSS's licensee's
> selected assignment. MSS ATC operations beyond the MSS licensee's
> selected assignment are prohibited.
>
> \(ii\) In the Big LEO band, MSS ATC is limited to no more than 5.5 MHz
> of spectrum in each direction of operation. Licensees in these bands
> may implement ATC only on those channels on which MSS is authorized,
> consistent with the Big LEO band-sharing arrangement.
>
> \(iii\) In the L-band, MSS ATC is limited to those frequency
> assignments available for MSS use in accordance with the Mexico City
> Memorandum of Understanding, its successor agreements or the result of
> other organized efforts of international coordination.

\(c\) Equipment certification.

(1) Each ATC MET utilized for operation under this part and each
    transmitter marketed, as set forth in Sec. 2.803 of this chapter,
    must be of a type that has been authorized by the Commission under
    its certification procedure for use under this part.

(2) Any manufacturer of radio transmitting equipment to be used in these
    services may request equipment authorization following the
    procedures set forth in subpart J of part 2 of this chapter.
    Equipment authorization for an individual transmitter may be
    requested by an applicant for a station authorization by following
    the procedures set forth in part 2 of this chapter.

(3) Licensees and manufacturers are subject to the radiofrequency
    radiation exposure requirements specified in 1.1307(b), 2.1091 and
    2.1093 of this chapter, as appropriate. MSS ATC base stations must
    comply with the requirements specified in 1.1307(b) for PCS base
    stations. MSS ATC mobile terminals must comply with the requirements
    specified for mobile and portable PCS transmitting devices in
    1.1307(b). MSS ATC mobile terminals must also comply with the
    requirements in 2.1091 and 2.1093 for Satellite Communications
    Services devices. Applications for equipment authorization of mobile
    or portable devices operating under this section must contain a
    statement confirming compliance with these requirements for both
    fundamental emissions and unwanted emissions. Technical information
    showing the basis for this statement must be submitted to the
    Commission upon request.

\(d\) Applicants for an ancillary terrestrial component authority shall
demonstrate compliance with the provisions of §§ 1.924 and 25.203(e)-(g)
and with §§ 25.252, 25.253, or 25.254, as appropriate, through
certification or explanatory technical exhibit.

\(e\) Upon receipt of ATC authority, all ATC licensees must ensure
continued compliance with this section and §§ 25.252, 25.253, or 25.254,
as appropriate.

8.  Section 25.201 is amended by amending and adding the following
    definitions in alphabetical order to read as follows:

**[§ 25.201 Definitions.]{.underline}**

\* \* \* \* \*

[Ancillary terrestrial component.]{.underline} The term "ancillary
terrestrial component" means a terrestrial communications network used
in conjunction with a qualifying satellite network system authorized
pursuant to these rules and the conditions established in the Report and
Order issued in IB Docket 01-185, [Flexibility for Delivery of
Communications by Mobile Satellite Service Providers in the 2 GHz Band,
the L-Band, and the 1.6/2.4 GHz Band.]{.underline}

[Ancillary terrestrial component base station.]{.underline} The term
"ancillary terrestrial component base station" means a terrestrial fixed
facility used to transmit communications to or receive communications
from one or more ancillary terrestrial component mobile terminals.

[Ancillary terrestrial component mobile terminal.]{.underline} The term
"ancillary terrestrial component mobile terminal" means a terrestrial
mobile facility used to transmit communications to or receive
communications from an ancillary terrestrial component base station or a
space station.

[Selected assignment.]{.underline} The term "selected assignment" means
a spectrum assignment voluntarily identified by a 2 GHz MSS licensee at
the time that the licensee's first 2 GHz mobile-satellite service
satellite reaches its intended orbit, or other mobile-satellite service
spectrum in which the Commission permits a 2 GHz mobile-satellite
service licensee to conduct mobile-satellite service operations with
authority superior to that of other in-band, mobile-satellite service
licensees.

[Structural attenuation.]{.underline} The term "structural attenuation"
means the signal attenuation caused by transmitting to and from mobile
terminals which are located in buildings or other man-made structures
that attenuate the transmission of radiofrequency radiation.

\* \* \* \* \*

9.  New Section 25.252 is added to read as follows:

**[§ 25.252 Special requirements for ancillary terrestrial components
operating in the 2000-2020 MHz/2180-2200 MHz bands.]{.underline}**

\(a\) Applicants for an ancillary terrestrial component in these bands
must demonstrate that ATC base stations shall not:

(1) exceed -100.6 dBW/4 kHz out-of-channel emissions at the edge of the
    MSS licensee's selected assignment.

(2) exceed a peak EIRP of 27 dBW in 1.23 MHz.

(3) exceed an EIRP toward the physical horizon (not to include man-made
    structures) of 25.5 dBW in 1.23 MHz.

(4) be located less than 190 meters from all airport runways and
    aircraft stand areas, including takeoff and landing paths.

(5) exceed an aggregate power flux density of -51.8 dBW/m^2^ in a 1.23
    MHz bandwidth at all airport runways and aircraft stand areas,
    including takeoff and landing paths and all ATC base station
    antennas shall have an overhead gain suppression according to the
    following.

(6) be located less than 820 meters from a U.S. Earth Station facility
    operating in the 2200-2190 MHz band. In its MSS ATC application, the
    MSS licensee should request a list of operational stations in the
    2200-2190 MHz band.

(7) exceed an EIRP in the 1559-1605 MHz band of -70 dBW/MHz for wideband
    emissions and -80 dBW for narrow-band emissions. The wideband EIRP
    level is to be measured using a root mean square (RMS) detector
    function with a minimum resolution bandwidth of 1 MHz and the video
    bandwidth is not less than the resolution bandwidth. The narrowband
    EIRP level is to be measured using an RMS detector function with a
    resolution bandwidth of no less than 1 kHz. The measurements are to
    be made over a 20 millisecond averaging period when the base station
    is transmitting data.

+-------------------------------+--------------------------------------+
| Angle from Direction of       | Antenna Discrimination               |
| Maximum Gain, in Vertical     |                                      |
| Plane, Above Antenna          | Pattern (dB)                         |
| (Degrees)                     |                                      |
+-------------------------------+--------------------------------------+
| 0 to 15                       | Meet or exceed ITU-R Rec. F.1336,    |
| \................             | Annex 1, for P-MP Antennas           |
| ............................. |                                      |
+-------------------------------+--------------------------------------+
| 15 to 180                     | Not to Exceed Gmax -- 25             |
| \.............                |                                      |
| ............................. |                                      |
+-------------------------------+--------------------------------------+

Where: Gmax is the maximum gain of the base station antenna in dBi.

(8) use ATC base station antennas that have again greater than 17 dBi
    and must have an overhead gain suppression according to the
    following:

+-------------------------------+--------------------------------------+
| Angle from Direction of       | Antenna Discrimination               |
| Maximum Gain, in Vertical     |                                      |
| Plane, Above Antenna          | Pattern (dB)                         |
| (Degrees)                     |                                      |
+-------------------------------+--------------------------------------+
| 0                             | Gmax                                 |
| ......................        |                                      |
| ............................. |                                      |
+-------------------------------+--------------------------------------+
| 2......................       | Not to Exceed Gmax -- 14             |
| ............................. |                                      |
+-------------------------------+--------------------------------------+
| 8 to 180                      | Not to Exceed Gmax -- 25             |
| .............                 |                                      |
| ............................. |                                      |
+-------------------------------+--------------------------------------+

\(b\) Applicants for an ancillary terrestrial component in these bands
must demonstrate that ATC mobile terminals shall:

(1) observe a peak EIRP limit of 1.0 dBW in 1.23 MHz.

(2) limit out-of-channel emissions at the edge of a MSS licensee's
    selected assignment to -67 dBW/4 kHz.

(3) not exceed an EIRP in the 1559-1605 MHz band of -70 dBW/MHz for
    wideband emissions and -80 dBW for narrow-band emissions. The
    wideband EIRP level is to be measured using a root mean square (RMS)
    detector function with a minimum resolution bandwidth of 1 MHz and
    the video bandwidth is not less than the resolution bandwidth. The
    narrowband EIRP level is to be measured using an RMS detector
    function with a resolution bandwidth of no less than 1 kHz. The
    measurements are to be made over a 20 millisecond averaging period
    when the base station is transmitting data.

\(c\) For ATC operations in the 2000-2020 MHz band, the power of any
emission outside the licensee\'s frequency band(s) of operation shall be
attenuated below the transmitter power (P) within the licensed band(s)
of operation, measured in watts, in accordance with the following:

(1) On any frequency within the 2000 to 2020 MHz band outside the
    licensee's frequency band(s) of operations, emissions shall be
    attenuated by at least 43 + 10 log (P) dB.

(2) Emissions on frequencies lower than 1995 MHz and higher than 2025
    MHz shall be attenuated by at least 70 + 10 log P. Emissions in the
    bands 1995-2000 MHz and 2020-2025 MHz shall be attenuated by at
    least a value as determined by linear interpolation from 70 + 10 log
    P at 1995 MHz or 2025 MHz, to 43 + 10 log P dB at the nearest MSS
    band edge at 2000 MHz or 2020 MHz respectively.

(3) When an emission outside of the authorized bandwidth causes harmful
    interference, the Commission may, in its discretion, require greater
    attenuation than specified in paragraphs (1) and (2) above.

(4) Compliance with these provisions is based on the use of measurement
    instrumentation employing a resolution bandwidth of 1 megahertz or
    greater.

Note: The preceding rules of § 25.252 are based on cdma2000 system
architecture. To the extent that a 2 GHz MSS licensee is able to
demonstrate that the use of a different system architecture would
produce no greater potential interference than that produced as a result
of implementing the rules of this section, an MSS licensee is permitted
to apply for ATC authorization based on another system architecture.

10. New Section 25.253 is added to read as follows:

**[§ 25.253 Special requirements for ancillary terrestrial components
operating in the 1626.5-1660.5 MHz/1525-1559 MHz bands.]{.underline}**

\(a\) An applicant for an ancillary terrestrial component in these bands
shall:

(1) implement the maximum available power control for all ATC base
    stations and mobile terminals under GSM 800 or GSM 1800 standard
    (dynamic range of 30 dB in steps of 2 dB).

(2) implement a variable rate vocoder in the ATC mobile terminal such
    that the duty cycle of the mobile terminal is reduced when the EIRP
    of the mobile terminals requested by the power control system is
    increased above a nominal -7.4 dBW. The duty cycle will be reduced
    by refraining from transmitting on consecutive time slots. The duty
    cycle of the mobile terminal, as measured over a 0.25 second period,
    shall comply with the following schedule:

  ----------------------------------- -----------------------------------
  Nominal Mobile Terminal Peak EIRP   Mobile Terminal Transmit Duty Cycle

  Equal to or less than -7.4 dBW      100%

  Greater than -7.4 dBW               50%

  Greater than -4.4 dBW               25%

  Greater than -1.4 dBW               20%

  Greater than -0.4 dBW               18.2%
  ----------------------------------- -----------------------------------

(3) implement the provisions of subsection (2) in a manner that
    precludes other ATC mobile terminals from using the open time slots.

(4) demonstrate, at the time of application, how the ATC network will
    comply with the requirements of subsections (a) and (b)(1) through
    (b)(3) above.

(5) demonstrate, at the time of application, how its ATC network will
    comply with the requirements of footnotes US308 and US315 to the
    table of frequency allocations contained in § 2.106 of the
    Commission's rule regarding priority and preemptive access to the
    L-band MSS spectrum by the aeronautical mobile-satellite en-route
    service (AMS(R)S) and the global maritime distress and safety system
    (GMDSS).

(6) demonstrate how its ATC network base stations and mobile terminals
    will comply with the Global Mobile Personal Communications by
    Satellite (GMPCS) system requirements to protect the radionavigation
    satellite services (RNSS) operations in the allocation above 1559
    MHz.

(7) coordinate with the terrestrial CMRS operators prior to initiating
    ATC transmissions when co-locating ATC base stations with
    terrestrial commercial mobile radio service (CMRS) base stations
    that make use of Global Positioning System (GPS) time-based
    receivers.

(8) demonstrate that the cellular structure of the ATC network design
    includes 18 dB of link margin allocated to structural attenuation.
    If less structural attenuation is used, the maximum number of base
    stations permitted under paragraph (c) of this section must be
    reduced or a showing must be made that there would be no increase in
    interference to other MSS operators and that the applicant\'s
    satellite would continue to meet the other requirements of this
    section.

\(b\) ATC base stations shall not exceed an out-of-channel emissions
measurement of -57.9 dBW/MHz at the edge of a MSS licensee's authorized
and internationally coordinated MSS frequency assignment.

\(c\) The maximum number of base stations operating in the U.S. on any
one 200 kHz channel shall not exceed 1725. During the first 18 months
following activation for testing of the first ATC base station, the
L-band ATC operator shall not implement more than 863 base stations on
the same 200 kHz channel. L‑band ATC operators shall notify the
Commission of the date of the activation for testing of the first ATC
base station and shall maintain a record of the total number of ATC base
stations operating in the U.S. on any given 200 kHz of spectrum. Upon
request by the Commission, L-band ATC operators shall provide this
information to resolve any claim it receives from an L-band MSS operator
that ATC operations are causing interference to its MSS system.

\(d\) Applicants for an ancillary terrestrial component in these bands
must demonstrate that ATC base stations shall not:

(1) exceed peak EIRP of 19.1 dBW, in 200 kHz, per carrier with no more
    than three carriers per sector;

(2) exceed an EIRP toward the physical horizon (not to include man-made
    structures) of 14.1 dBW per carrier in 200 kHz;

(3) locate any ATC base station less than 470 meters from all airport
    runways and aircraft stand areas, including takeoff and landing
    paths;

(4) exceed an aggregate power flux density level of -73.0 dBW/m^2^/200
    kHz at the edge all airport runways and aircraft stand areas,
    including takeoff and landing paths;

(5) locate any ATC base station less than 1.5 km from the boundaries of
    all navigable waterways or the ATC base stations shall not exceed a
    power flux density level of -64.6 dBW/m^2^/200 kHz at the water's
    edge of any navigable waterway;

(6) exceed a peak gain of 16 dBi;

(7) exceed an EIRP in the 1559-1605 MHz band of -70 dBW/MHz for wideband
    emissions and -80 dBW for narrow-band emissions. After January 1,
    2005, the ATC station shall not exceed an EIRP in the 1605-1610 MHz
    frequency range that is determined by linear interpolation from --70
    dBW/MHz at 1605 MHz to --10 dBW/MHz at 1610 MHz for wideband
    emissions. The wideband EIRP level is to be measured using a root
    mean square (RMS) detector function with a minimum resolution
    bandwidth of 1 MHz and the video bandwidth is not less than the
    resolution bandwidth. The narrowband EIRP level is to be measured
    using an RMS detector function with a resolution bandwidth of no
    less than 1 kHz. The measurements are to be made over a 20
    millisecond averaging period when the base station is transmitting
    data.

\(e\) Applicants for an ancillary terrestrial component in these bands
must demonstrate, at the time of the application, that ATC base stations
shall use left-hand-circular polarization, maximum gain of 16 dBi and
overhead gain suppression according to the following:

+--------------------------------------+-------------------------------+
| Angle from Direction of Maximum      | Antenna Discrimination        |
| Gain, in Vertical Plane, Above       |                               |
| Antenna                              | Pattern                       |
|                                      |                               |
| (Degrees)                            | (dB)                          |
+--------------------------------------+-------------------------------+
| 0                                    | Gmax                          |
| ............                         |                               |
| .................................... |                               |
+--------------------------------------+-------------------------------+
| 5.............                       | Not to Exceed Gmax -- 5       |
| .................................... |                               |
+--------------------------------------+-------------------------------+
| 10............                       | Not to Exceed Gmax -19        |
| .................................... |                               |
+--------------------------------------+-------------------------------+
| 15 to                                | Not to Exceed Gmax -- 27      |
| 30......                             |                               |
| .................................... |                               |
+--------------------------------------+-------------------------------+
| 30 to                                | Not to Exceed Gmax -- 35      |
| 55......                             |                               |
| .................................... |                               |
+--------------------------------------+-------------------------------+
| 55 to 145                            | Not to Exceed Gmax -- 40      |
| ....                                 |                               |
| .................................... |                               |
+--------------------------------------+-------------------------------+
| 145 to                               | Not to Exceed Gmax -- 26      |
| 180...                               |                               |
| .................................... |                               |
+--------------------------------------+-------------------------------+

\(f\) Prior to operation, ancillary terrestrial component licensees
shall:

(1) provide the Commission with sufficient information to complete
    coordination of ATC base stations with Search-and-Rescue
    Satellite-Aided Tracking (SARSAT) earth stations operating in the
    1544-1545 MHz band for any ATC base station located either within 27
    km of a SARSAT station, or within radio horizon of the SARSAT
    station, whichever is less.

(2) take all practicable steps to avoid locating ATC base stations
    within radio line of sight of MAT receive sites in order to protect
    U.S. MAT systems consistent with ITU-R Recommendation ITU-R M.1459.
    MSS ATC base stations located within radio line of sight of a MAT
    receiver must be coordinated with the Aerospace and Flight Test
    Radio Coordinating Council (AFTRCC) for non-Government MAT receivers
    on a case-by-case basis prior to operation. For government MAT
    receivers, the MSS licensee shall supply sufficient information to
    the Commission to allow coordination to take place. A listing of
    current and planned MAT receiver sites can be obtained from AFTRCC
    for non-Government sites and through the FCC's IRAC Liaison for
    Government MAT receiver sites.

\(g\) Applicants for an ancillary terrestrial component in these bands
must demonstrate that ATC mobile terminals shall:

(1) be limited to a peak EIRP level of 0 dBW and an out-of-channel
    emissions of -67dBW/4 kHz at the edge of a MSS licensee's authorized
    and internationally coordinated MSS frequency assignment.

(2) take all practicable steps to avoid ATC mobile terminals from
    causing interference to U.S. radio astronomy service (RAS)
    observations in the 1660-1660.5 MHz band.

(3) not exceed an EIRP in the 1559-1610 MHz band of -70 dBW/MHz for
    wideband emissions and -80 dBW for narrow-band emissions. The
    wideband EIRP level is to be measured using a root mean square (RMS)
    detector function with a minimum resolution bandwidth of 1 MHz and
    the video bandwidth is not less than the resolution bandwidth. The
    narrowband EIRP level is to be measured using an RMS detector
    function with a resolution bandwidth of no less than 1 kHz. The
    measurements are to be made over a 20 millisecond averaging period
    when the base station is transmitting data.

Note: The preceding rules of § 25.253 are based on GSM/TDMA 800 or GSM
1800 system architecture. To the extent that an L-band MSS licensee is
able to demonstrate that the use of a different system architecture
would produce no greater potential interference than that produced as a
result of implementing the rules of this section, an MSS licensee is
permitted to apply for ATC authorization based on another system
architecture.

11. New Section 25.254 is added to read as follows:

**[§ 25.254 Special requirements for ancillary terrestrial components
operating in the 1610-1626.5 MHz/2483.5-2500 MHz bands.]{.underline}**

\(a\) An applicant for an ancillary terrestrial component in these bands
must demonstrate that ATC base stations shall:

(1) not exceed a peak EIRP of 32 dBW in 1.25 MHz;

(2) not cause unacceptable interference to systems identified section
    25.254(c) and, in any case, shall not exceed out-of-channel emission
    of -44.1 dBW/30 kHz at the edge of the MSS licensee's authorized
    frequency assignment;

(3) at the time of application, that it has taken, or will take steps
    necessary to avoid causing interference to other services sharing
    the use of the 2450-2500 MHz band through frequency coordination;
    and

(4) not exceed an EIRP in the 1559-1605 MHz band of -70 dBW/MHz for
    wideband emissions and -80 dBW for narrow-band emissions. After
    January 1, 2005, the ATC station shall not exceed an EIRP in the
    1605-1610 MHz frequency range that is determined by linear
    interpolation from --70 dBW/MHz at 1605 MHz to --10 dBW/MHz at 1610
    MHz for wideband emissions. The wideband EIRP level is to be
    measured using a root mean square (RMS) detector function with a
    minimum resolution bandwidth of 1 MHz and the video bandwidth is not
    less than the resolution bandwidth. The narrowband EIRP level is to
    be measured using an RMS detector function with a resolution
    bandwidth of no less than 1 kHz. The measurements are to be made
    over a 20 millisecond averaging period when the base station is
    transmitting data.

\(b\) An applicant for an ancillary terrestrial component in these bands
must demonstrate that mobile terminals shall:

(1) meet the requirements contained in § 25.213 to protect radio
    astronomy service (RAS) observations in the 1610.6-1613.8 MHz band
    from unacceptable interference;

(2) observe a peak EIRP limit of 1.0 dBW in 1.25 MHz;

(3) observe an out-of-channel EIRP limit of -57.1 dBW/30 kHz at the edge
    of the licensed MSS frequency assignment.

(4) not exceed an EIRP in the 1559-1605 MHz band of -70 dBW/MHz for
    wideband emissions and -80 dBW for narrow-band emissions. The
    wideband EIRP level is to be measured using a root mean square (RMS)
    detector function with a minimum resolution bandwidth of 1 MHz and
    the video bandwidth is not less than the resolution bandwidth. The
    narrowband EIRP level is to be measured using an RMS detector
    function with a resolution bandwidth of no less than 1 kHz. The
    measurements are to be made over a 20 millisecond averaging period
    when the base station is transmitting data.

\(c\) Applicants for an ancillary terrestrial component to be used in
conjunction with a mobile-satellite service system using CDMA technology
shall coordinate the use of the Big LEO MSS spectrum designated for CDMA
systems using the framework established by the ITU in Recommendation
ITU-R M.1186.

Note: The preceding rules of § 25.254 are based on cdma2000 and IS-95
system architecture. To the extent that a Big LEO MSS licensee is able
to demonstrate that the use of different system architectures would
produce no greater potential interference than that produced as a result
of implementing the rules of this section, an MSS licensee is permitted
to apply for ATC authorization based on another system architecture.

12. New Section 25.255 is added to read as follows:

**[§ 25.255 Procedures for resolving harmful interference related to
operation of ancillary terrestrial components operating in the 1.5./1.6
GHz, 1.6/2.4 GHz and 2 GHz bands.]{.underline}**

If harmful interference is caused to other services by ancillary MSS ATC
operations, either from ATC base stations or mobile terminals, the ATC
operator must resolve any such interference. If the MSS ATC operator
claims to have resolved the interference and other operators claim that
interference has not been resolved, then the parties to the dispute may
petition the Commission for a resolution of their claims.