Allocations

 
U.S. Non-Federal-Government Allocations
137.025 - 137.175 MHz
SPACE OPERATION (space-to-Earth)
METEOROLOGICAL-SATELLITE (space-to-Earth)
SPACE RESEARCH (space-to-Earth)
Mobile-satellite (space-to-Earth) US319 US320


U.S. Federal Government Allocations
137.025 - 137.175 MHz
SPACE OPERATION (space-to-Earth)
METEOROLOGICAL-SATELLITE (space-to-Earth)
SPACE RESEARCH (space-to-Earth)
Mobile-satellite (space-to-Earth) US319 US320


ITU Region 1 Allocations
137.025 - 137.175 MHz
SPACE OPERATION (space-to-Earth) 5.203C
METEOROLOGICAL-SATELLITE (space-to-Earth)
SPACE RESEARCH (space-to-Earth)
Fixed
Mobile except aeronautical mobile (R)
Mobile-satellite (space-to-Earth) 5.208A 5.208B 5.209


ITU Region 2 Allocations
137.025 - 137.175 MHz
SPACE OPERATION (space-to-Earth) 5.203C
METEOROLOGICAL-SATELLITE (space-to-Earth)
SPACE RESEARCH (space-to-Earth)
Fixed
Mobile except aeronautical mobile (R)
Mobile-satellite (space-to-Earth) 5.208A 5.208B 5.209


ITU Region 3 Allocations
137.025 - 137.175 MHz
SPACE OPERATION (space-to-Earth) 5.203C
METEOROLOGICAL-SATELLITE (space-to-Earth)
SPACE RESEARCH (space-to-Earth)
Fixed
Mobile except aeronautical mobile (R)
Mobile-satellite (space-to-Earth) 5.208A 5.208B 5.209


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Footnotes

5.203C   The use of the space operation service (space-to-Earth) with non-geostationary satellite short-duration mission systems in the frequency band 137-138 MHz is subject to Resolution 660 (WRC 19). Resolution 32 (WRC 19) applies. These systems shall not cause harmful interference to, or claim protection from, the existing services to which the frequency band is allocated on a primary basis. (WRC 19)

5.204   Different category of service: in Afghanistan, Saudi Arabia, Bahrain, Bangladesh, Brunei Darussalam, China, Cuba, the United Arab Emirates, India, Indonesia, Iran (Islamic Republic of), Iraq, Kuwait, Montenegro, Oman, Pakistan, the Philippines, Qatar, Singapore, Thailand and Yemen, the frequency band 137-138 MHz is allocated to the fixed and mobile, except aeronautical mobile (R), services on a primary basis (see No. 5.33). (WRC-19)

5.205   Different category of service: in Israel and Jordan, the allocation of the band 137 138 MHz to the fixed and mobile, except aeronautical mobile, services is on a primary basis (see No. 5.33).

5.206   Different category of service: in Armenia, Azerbaijan, Belarus, Bulgaria, Egypt, the Russian Federation, Finland, France, Georgia, Greece, Kazakhstan, Lebanon, Moldova, Mongolia, Uzbekistan, Poland, Kyrgyzstan, the Syrian Arab Republic, Slovakia, the Czech Rep., Romania, Tajikistan, Turkmenistan and Ukraine, the allocation of the band 137-138 MHz to the aeronautical mobile (OR) service is on a primary basis (see No. 5.33). (WRC 2000)

5.207   Additional allocation: in Australia, the band 137-144 MHz is also allocated to the broadcasting service on a primary basis until that service can be accommodated within regional broadcasting allocations.

5.208   The use of the band 137-138 MHz by the mobile-satellite service is subject to coordination under No. 9.11A. (WRC-97)

5.208A   In making assignments to space stations in the mobile-satellite service in the frequency bands 137-138 MHz, 387 390 MHz and 400.15-401 MHz and in the maritime mobile-satellite service (space-to-Earth) in the frequency bands 157.1875-157.3375 MHz and 161.7875-161.9375 MHz, administrations shall take all practicable steps to protect the radio astronomy service in the frequency bands 150.05-153 MHz, 322-328.6 MHz, 406.1-410 MHz and 608-614 MHz from harmful interference from unwanted emissions as shown in the most recent version of Recommendation ITU R RA.769. (WRC 19)

5.208B   In the frequency bands:

137-138 MHz,
157.1875-157.3375 MHz,
161.7875-161.9375 MHz,
387-390 MHz,
400.15-401 MHz,
1 452-1 492 MHz,
1 525-1 610 MHz,
1 613.8-1 626.5 MHz,
2 655-2 690 MHz,
21.4-22 GHz,

Resolution 739 (Rev.WRC-19) applies. (WRC 19)

5.209   The use of the bands 137-138 MHz, 148-150.05 MHz, 399.9-400.05 MHz, 400.15-401 MHz, 454 456 MHz and 459-460 MHz by the mobile-satellite service is limited to non geostationary-satellite systems. (WRC 97)

US319   In the bands 137-138 MHz, 148-149.9 MHz, 149.9-150.05 MHz, 399.9-400.05 MHz, 400.15-401 MHz, 1610-1626.5 MHz, and 2483.5-2500 MHz, Federal stations in the mobile-satellite service shall be limited to earth stations operating with non-Federal space stations.

US320   The use of the bands 137-138 MHz, 148-150.05 MHz, 399.9-400.05 MHz, and 400.15-401 MHz by the mobile-satellite service is limited to non-voice, non-geostationary satellite systems and may include satellite links between land earth stations at fixed locations.


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Occupancy Measurements (10)

Engineering Data

Lower Frequency Center Frequency Upper Frequency
Frequency 137.025 MHz 137.1 MHz 137.175 MHz
Wavelength 2.2 m 2.2 m 2.2 m
Band designator(s) VHF VHF VHF
Isotropic collecting area 3,809.2 cm2 3,805.0 cm2 3,800.9 cm2
Free space loss (1 m) 15.2 dB 15.2 dB 15.2 dB
Free space loss (1 km) 75.2 dB 75.2 dB 75.2 dB
Free space loss (10 km) 95.2 dB 95.2 dB 95.2 dB
Free space loss (100 km) 115.2 dB 115.2 dB 115.2 dB
Free space loss (1000 km) 135.2 dB 135.2 dB 135.2 dB
Free space loss
(35,786 km = GEO orbit)
166.3 dB 166.3 dB 166.3 dB
Free space loss (378,370 km = Moon) 186.7 dB 186.7 dB 186.8 dB
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