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-The band 21200 – 23600 MHz is allocated to the Fixed service on a primary basis.
-The band 21200 – 23600 MHz is also allocated to other services as follows:
21200-21400: EARTH EXPLORATION – SATELLITE (passive), MOBILE, SPACE RESEARCH (passive)
21400-22000: MOBILE, BROADCASTING - SATELLITE
22000-22210: MOBILE except aeronautical mobile
22210-22500: EARTH EXPLORATION – SATELLITE (passive), MOBILEexcept aeronautical mobile, RADIO ASTRONOMY, SPACE RESEARCH (passive)
22500-22550: MOBILE
22550-23550: inter-satellite, mobile
23550-23600: mobile
The band 21200 - 23600MHz
a/
Note:
·This radio – frequency channel arrangement complies with Annex 1 of Recommendation ITU-R F. 637-2, 1997
·Application: point-to-point microwave systems.
·Transmission capacity: 140Mb/s, 155Mb/s, 1800 FDM.
·Minimum transmission distance: No limit
·The centre frequencies in MHz of individual channels are expressed by the following relationships:
fn = fo - 1232 + 112n fo = 22400
f’n = fo + 112n n = 1,2,3,4,5,6,7,8,9,10.
b/
Note:
·This radio – frequency channel arrangement complies with Annex 1 of Recommendation ITU-R F. 637-2, 1997
·Application: point-to-point microwave systems.
·Transmission capacity: 34Mb/s, 300 FDM channels.
·Minimum transmission distance: No limit
·The centre frequencies in MHz of individual channels are expressed by the following relationships:
fn = fo - 1190 + 28n fo = 22400
f’n = fo +42 + 28n n = 1,2,3, ..., 40
c/
Note:
·This radio – frequency channel arrangement complies with Annex 1 of Recommendation ITU-R F. 637-2, 1997
·Application: point-to-point microwave systems.
·Transmission capacity: 2x8Mb/s, 120 FDM channels.
·Minimum transmission distance: No limit
·The centre frequencies in MHz of individual channels are expressed by the following relationships:
fn = fo - 1183 + 14n fo = 22400
f’n = fo +49 + 14n n = 1,2,3, ..., 80
The centre frequencies of main channels
d/
Note:
·This radio – frequency channel arrangement complies with Annex 1 of Recommendation ITU-R F. 637-2, 1997
·Application: point-to-point digital microwave systems.
·Transmission capacity: 8Mb/s.
·Minimum transmission distance: No limit
·The centre frequencies in MHz of individual channels are expressed by the following relationships:
fn = fo – 1179.5 + 7n fo = 22400
f’n = fo +52.5 + 7n n = 1,2,3, ..., 160
The centre frequencies of main channels
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