(These footnotes, each consisting of the letter "G" followed by one or more digits, denote stipulations applicable only to the Government.)
G2--In the bands 216-225, 420-450 (except as provided by US217), 890-902, 928-942, 1300-1400, 2310-2390, 2417-2450, 2700-2900, 5650-5925, and 9000-9200 MHz, the Government radiolocation is limited to the military ser vices.
G5--In the bands 162.0125-173.2, 173.4-174, 406.1-410 and 410-420 MHz, the fixed and mobile services are all allocated on a primary basis to the Government non-military agencies.
G6--Military tactical fixed and mobile operations may be conducted nationally on a second- ary basis; (1) to the meteorological aids service in the band 403-406 MHz; and (2) to the radio astrono- my service in the band 406.1-410 MHz. Such fixed and mobile operations are subject to local coordi- nation to ensure that harmful interference will not be caused to the services to which the bands are allo- cated.
G8--Low power Government radio control operations are permitted in the band 420-450 MHz.
G11--Government fixed and mobile radio services including low power radio control operations, are permitted in the band 902-928 MHz on a secondary basis.
G15--Use of the band 2700-2900 MHz by the military fixed and shipborne air defense radiolocation installations will be fully coordinated with the meteorological aids and aeronautical radio- navigation services. The military air defense installations will be moved from the band 2700-2900 MHz at the earliest practicable date. Until such time as military air defense installations can be accommo- dated satisfactorily else-where in the spectrum, such operations will, insofar as practicable, be adjusted to meet the requirements of the aeronautical radio-navigation service.
G19--Use of the band 9000-9200 MHz by military fixed and shipborne air defense radiolo- cation installations will be fully coordinated with the aeronautical radionavigation service, recognizing fully the safety aspects of the latter. Military air defense installations will be accommodated ulti- mately outside this band. Until such time as military defense installations can be accommodated satisfac- torily elsewhere in the spectrum such operations will, in-so-far as practicable, be adjusted to meet the requirements of the aeronautical radionavigation service.
G27--In the bands 225-328.6, 335.4-399.9, and 1350-1400 MHz, the fixed and mobile services are limited to the military services.
G30--In the bands 138-144, 148-149.9, 150.05-150.8, 1427-1429 and 1429-1435 MHz, the fixed and mobile services are limited pri- marily to operations by the military services.
G31--In the bands 3300-3500 MHz, the Government radiolocation is limited to the military services, except as provided by footnote US108.
G32--Except for weather radars on meteorological-satellites in the band 9975-10025 MHz and for Government survey operations (see footnote US108), Government radiolocation in the band 10000-10500 MHz is limited to the military services.
G34--In the band 34.4-34.5 GHz, Weather radars on board meteorological satellites for cloud detection are authorized to operate on the basis of equality with military radiolocation devices. All other non-military radiolocation in the band 33.4-36.0 GHz shall be secondary to the military services.
G42--Space command, control, range and range rate systems for earth station transmission only (including installations on certain Navy ships) may be accommodated on a co-equal basis with the fixed and mobile services in the band 1761-1842 MHz. Specific frequencies required to be used at any location will be satisfied on a coordinated case-by-case basis.
G56--Government radiolocation in the bands 1215-1300, 2900-3100, 5350-5650 and 9300-9500 MHz is primarily for the military services; however, limited secondary use is permitted by other Government agencies in support of experi- mentation and research programs. In addition, limited secondary use is permitted for survey operations in the band 2900-3100 MHz.
G59--In the bands 902-928 MHz, 3100-3300 MHz, 3500-3700 MHz, 5250-5350 MHz, 8500-9000 MHz, 9200-9300 MHz, 13.4-14.0 GHz, 15.7-17.7 GHz and 24.05-24.25 GHz, all Government non-military radiolocation shall be secondary to military radiolocation, except in the subband 15.7-16.2 GHz airport surface detection equipment (ASDE) is permitted on a co-equal basis subject to coordination with the military depart- ments.
G100--The bands 235-322 MHz and 335.4-399.9 MHz are also allocated on a primary basis to the mobile-satellite service, limited to mili- tary operations.
G101--In the band 2200-2290 MHz, space operations (space-to-Earth) and (space-to-space), and earth exploration-satellite (space-to-Earth) and (space-to-space) services, may be accom- modated on a co-equal basis with fixed, mobile and space research service.
G104--In the bands 7450-7550 and 8175-8215 MHz, it is agreed that although the military space radio communication systems, which include earth stations near the proposed meteo- rological-satellite installations will precede the meteorological-satellite installations, engineering adjustments to either the military or the meteo- rological-satellite systems or both will be made as mutually required to assure compatible operations of the systems concerned.
G106--The bands 2501-2502 kHz, 5003-5005 kHz, 10003-10005 kHz, 15005-15010 kHz, 19990-19995 kHz, 20005-20010 kHz and 25005-25010 kHz are also allocated, on a secondary basis, to the space research service. The space re- search transmissions are subject to immediate temporary or permanent shutdown in the event of interference to the reception of the standard frequency and time broadcasts.
G109--All assignments in the band 157.0375-157.1875 MHz are subject to adjustment to other frequencies in this band as long term U.S. maritime VHF planning develops, particularly that planning incident to support the National VHF-FM Radiotelephone Safety and Distress System (See Doc. 15624/1-1.9.111/1.9.125).
G110--Government ground-based stations in the aeronautical radionavigation service may be authorized between 3500 and 3700 MHz where accommodation in the 2700-2900 MHz band is not technically and/or economically feasible.
G114--In the band 1350-1400 MHz, the frequency 1381.05 MHz with emissions limited to ± 12 MHz is also allocated to Fixed and Mobile-Satellite Services (space-to-Earth) for the relay of nuclear burst data.
G115--In the band 13360-13410 kHz, the fixed service is allocated on a primary basis out- side the conterminous United States. Within the conterminous United States, assignments in the fixed service are permitted, and will be protected for national defense purposes or, if they are to be used only in an emergency jeopardizing life, public safety, or important property under conditions calling for immediate communication where other means of communication do not exist.
G116--The band 7125-7155 MHz is also allocated for Earth-to-space transmission in the Space Operations Service at a limited number of sites (not to exceed two), subject to established coordination procedures.
G117--In the bands 7250-7750,7900-8400 MHz and 17.8-21.2, 30-31, 39.5-40.5, 43.5-45.5 and 50.4-51.4 GHz the Government fixed-satellite and mobile-satellite services are limited to military systems.
G118--Government fixed stations may be authorized in the band 1700-1710 MHz only if spectrum is not available in the band 1710-1850 MHz.
G120--Development of airborne primary radars in the band 2310-2390 MHz with peak transmitter power in excess of 250 watts for use in the United States is not permitted.
G121--In the band 285-325 kHz, the Maritime Radionavigation Service may also be used on a primary basis by Maritime Radionavigation Land Stations to transmit differential global positioning satellite (DGPS) information.
G122--The bands 2390-2400, 2402-2417 and 4660-4685 MHz were identified for immediate reallocation, effective August 10, 1994, for exclusive non-Government use under Title VI of the Omnibus Budget Reconciliation Act of 1993. Effective August 10, 1994, any Government operations in these bands are on a non-interference basis to authorized non-Government operations and shall not hinder the implementation of any non-Government operations.
G123--The bands 2300-2310 and 2400-2402 MHz were identified for reallocation, effective August 10, 1995, for exclusive non-Government use under Title VI of the Omnibus Budget Reconciliation Act of 1993. Effective August 10, 1995, any Government operations in these bands are on a non-interference basis to authorized non-Government operations and shall not hinder the implementation of any non-Government operations.
G124--The band 2417-2450 MHz was identified for reallocation, effective August 10, 1995, for mixed Government and non-Government use under Title VI of the Omnibus Budget Reconciliation Act of 1993.
Return to Allocation Table & Footnotes Menus
Return to OSM Home Page.