5.149 In making assignments to stations of other services to which the bands:
13 360-13 410 kHz,
25 550-25 670 kHz,
37.5-38.25 MHz,
73-74.6 MHz in Regions 1 and 3,
150.05-153 MHz in Region 1,
322-328.6 MHz,
406.1-410 MHz,
608-614 MHz in Regions 1 and 3,
1 330-1 400 MHz,
1 610.6-1 613.8 MHz,
1 660-1 670 MHz,
1 718.8-1 722.2 MHz,
2 655-2 690 MHz,
3 260-3 267 MHz,
3 332-3 339 MHz,
3 345.8-3 352.5 MHz,
4 825-4 835 MHz, 4 950-4 990 MHz,
4 990-5 000 MHz,
6 650-6 675.2 MHz,
10.6-10.68 GHz,
14.47-14.5 GHz,
22.01-22.21 GHz,
22.21-22.5 GHz,
22.81-22.86 GHz,
23.07-23.12 GHz,
31.2-31.3 GHz,
31.5-31.8 GHz in Regions 1 and 3,
36.43-36.5 GHz,
42.5-43.5 GHz,
48.94-49.04 GHz,
76-86 GHz,
92-94 GHz,
94.1-100 GHz, 102-109.5 GHz,
111.8-114.25 GHz,
128.33-128.59 GHz,
129.23-129.49 GHz,
130-134 GHz,
136-148.5 GHz,
151.5-158.5 GHz,
168.59-168.93 GHz,
171.11-171.45 GHz,
172.31-172.65 GHz,
173.52-173.85 GHz,
195.75-196.15 GHz,
209-226 GHz,
241-250 GHz,
252-275 GHz
are allocated, administrations are urged to take all practicable steps to protect the radio astronomy service from harmful interference. Emissions from spaceborne or airborne stations can be particularly serious sources of interference to the radio astronomy service (see Nos. 4.5 and 4.6 and Article 29). (WRC 07)
5.334 Additional allocation: in Canada and the United States, the band 1 350-1 370 MHz is also allocated to the aeronautical radionavigation service on a primary basis. (WRC-03)
5.338 In Kyrgyzstan, Slovakia and Turkmenistan, existing installations of the radionavigation service may continue to operate in the band 1 350-1 400 MHz. (WRC 12)
5.338A In the frequency bands 1 350-1 400 MHz, 1 427-1 452 MHz, 22.55-23.55 GHz, 24.25-27.5 GHz, 30-31.3 GHz, 49.7 50.2 GHz, 50.4-50.9 GHz, 51.4-52.4 GHz, 52.4-52.6 GHz, 81-86 GHz and 92-94 GHz, Resolution 750 (Rev.WRC 19) applies. (WRC 19)
5.339 The bands 1 370-1 400 MHz, 2 640-2 655 MHz, 4 950-4 990 MHz and 15.20-15.35 GHz are also allocated to the space research (passive) and Earth exploration-satellite (passive) services on a secondary basis.
NG338A  In the bands 1390-1395 MHz and 1427-1435 MHz, licensees are encouraged to take all reasonable steps to ensure that unwanted emissions power does not exceed the following levels in the band 1400-1427 MHz:

  (a) For stations of point-to-point systems in the fixed service: −45 dBW/27 MHz.

  (b) For stations in the mobile service (except for devices authorized by the FCC for the Wireless Medical Telemetry Service): −60 dBW/27 MHz.
US79   In the bands 1390-1400 MHz and 1427-1432 MHz, the following provisions shall apply:

    (a) Airborne and space-to-Earth operations are prohibited.

    (b) Federal operations (except for devices authorized by the FCC for the Wireless Medical Telemetry Service) are on a non-interference basis to non-Federal operations and shall not constrain implementation of non-Federal operations.

US342 In making assignments to stations of other services to which the bands:

13 360-13 410 kHz	42.77-42.87 GHz*
25 550-25 670 kHz	43.07-43.17 GHz*
37.5-38.25 MHz	43.37-43.47 GHz*
322-328.6 MHz*	48.94-49.04 GHz*
1330-1400 MHz*	76-86 GHz
1610.6-1613.8 MHz*	92-94 GHz
1660-1660.5 MHz*	94.1-100 GHz
1668.4-1670 MHz*	102-109.5 GHz
3260-3267 MHz*	111.8-114.25 GHz
3332-3339 MHz*	128.33-128.59 GHz*
3345.8-3352.5 MHz*	129.23-129.49 GHz*
4825-4835 MHz*	130-134 GHz
4950-4990 MHz	136-148.5 GHz
6650-6675.2 MHz*	151.5-158.5 GHz
14.47-14.5 GHz*	168.59-168.93 GHz*
22.01-22.21 GHz*	171.11-171.45 GHz*
22.21-22.5 GHz	172.31-172.65 GHz*
22.81-22.86 GHz*	173.52-173.85 GHz*
23.07-23.12 GHz*	195.75-196.15 GHz*
31.2-31.3 GHz	209-226 GHz
36.43-36.5 GHz*	241-250 GHz
42.5-43.5 GHz	252-275 GHz

are allocated (*indicates radio astronomy use for spectral line observations), all practicable steps shall be taken to protect the radio astronomy service from harmful interference. Emissions from spaceborne or airborne stations can be particularly serious sources of interference to the radio astronomy service (see ITU Radio Regulations at Nos. 4.5 and 4.6 and Article 29).

US385 Radio astronomy observations may be made in the bands 1350-1400 MHz, 1718.8-1722.2 MHz, and 4950-4990 MHz on an unprotected basis, and in the band 2655-2690 MHz on a secondary basis, at the following radio astronomy observatories:

Allen Telescope Array, Hat Creek, CA	Rectangle between latitudes 40° 00' N and 42° 00' N and between longitudes 120° 15' W and 122° 15' W.
NASA Goldstone Deep Space Communications Complex, Goldstone, CA	80 kilometers (50 mile) radius centered on 35° 20' N, 116° 53' W.
National Astronomy and Ionosphere Center, Arecibo, PR	Rectangle between latitudes 17° 30' N and 19° 00' N and between longitudes 65° 10' W and 68° 00' W.
National Radio Astronomy Observatory, Socorro, NM	Rectangle between latitudes 32° 30' N and 35° 30' N and between longitudes 106° 00' W and 109° 00' W.
National Radio Astronomy Observatory, Green Bank, WV	Rectangle between latitudes 37° 30' N and 39° 15' N and between longitudes 78° 30' W and 80° 30' W.
National Radio Astronomy Observatory, Very Long Baseline Array Stations	80 kilometer radius centered on lat/lon (N/W):
Brewster, WA	48° 08', 119° 41'
Fort Davis, TX	30° 38', 103° 57'
Hancock, NH	42° 56', 71° 59'
Kitt Peak, AZ	31° 57', 111° 37'
Los Alamos, NM	35° 47', 106° 15'
Mauna Kea, HI	19° 48', 155° 27'
North Liberty, IA	41° 46', 91° 34'
Owens Valley, CA	37° 14', 118° 17'
Pie Town, NM	34° 18', 108° 07'
Saint Croix, VI	17° 45', 64° 35'
Owens Valley Radio Observatory, Big Pine, CA	Two contiguous rectangles, one between latitudes 36° 00' N and 37° 00' N and between longitudes 117° 40' W and 118° 30' W and the second between latitudes 37° 00' N and 38° 00' N and between longitudes 118° 00' W and 118° 50' W.

(a) In the bands 1350-1400 MHz and 4950-4990 MHz, every practicable effort will be made to avoid the assignment of frequencies to stations in the fixed and mobile services that could interfere with radio astronomy observations within the geographic areas given above. In addition, every practicable effort will be made to avoid assignment of frequencies in these bands to stations in the aeronautical mobile service which operate outside of those geographic areas, but which may cause harmful interference to the listed observatories. Should such assignments result in harmful interference to these observatories, the situation will be remedied to the extent practicable.

(b) In the band 2655-2690 MHz, for radio astronomy observations performed at the locations listed above, licensees are urged to coordinate their systems through the National Science Foundation, Division of Astronomical Sciences, Electromagnetic Spectrum Management Unit, 2415 Eisenhower Avenue, Alexandria, VA 22314; Email: esm@nsf.gov.

Wiki entries

1.4 GHz Band

Current Use 1390–1392 MHz Unpaired component of the 1.4 GHz band

The unpaired 1390-1392 MHz band and the paired 1392-1395/1432-1435 MHz bands comprise the FCC's "1.4 GHz band."

TerreStar acquired the 1.4 GHz band licenses, but after several years of challenges, it declared bankruptcy and emerged as MidWave, which plans to use the 1.4 GHz band for a nationwide 5G deployment in the U.S. and its territories.

The bands have incumbent operations which will continue. According to the FCC:

There are several government operations that will continue to operate in these bands:

1390-1392 MHz

-Radio astronomy observations may be assigned in the 1350-1400 MHz band on an unprotected basis at the 16 radio astronomy observatories identified in the table of Footnote US311 set forth in 47 C.F.R. § 2.106.

-In the 1390-1400 MHz band, government operations authorized as of March 22, 1995, at the 17 sites identified in the table of Footnote US351 set forth in 47 C.F.R. § 2.106 will continue to operate on a fully protected basis until January 1, 2009. All other government operations, except for medical telemetry (1395-1400 MHz), will operate on a non-interference basis to authorized non-Government operations and shall not hinder implementation of any non-Government operations.

1392-1395 MHz and 1432-1435 MHz

-Radio astronomy observations may be assigned in the 1350-1400 MHz band on an unprotected basis at the 16 radio astronomy observatories identified in the table of Footnote US311 set forth in 47 C.F.R. § 2.106.

-In the 1390-1400 MHz band, government operations authorized as of March 22, 1995, at the 17 sites identified in the table of Footnote US351 set forth in 47 C.F.R. § 2.106 will continue to operate on a fully protected basis until January 1, 2009. All other government operations, except for medical telemetry (1395-1400 MHz), will operate on a non-interference basis to authorized non-Government operations and shall not hinder implementation of any non-Government operations.

-In the 1432-1435 MHz band, government stations in the fixed and mobile services may operate indefinitely on a primary basis at the 23 sites listed in the table of Footnote US361 set forth in 47 C.F.R. § 2.106. All other Government stations in the fixed and mobile services shall operate on a primary basis until re-accommodated in accordance with the National Defense Authorization Act of 1999.