5.484A The use of the bands 10.95-11.2 GHz (space-to-Earth), 11.45-11.7 GHz (space-to-Earth), 11.7-12.2 GHz (space-to-Earth) in Region 2, 12.2-12.75 GHz (space-to-Earth) in Region 3, 12.5-12.75 GHz (space-to-Earth) in Region 1, 13.75-14.5 GHz (Earth-to-space), 17.8-18.6 GHz (space-to-Earth), 19.7-20.2 GHz (space-to-Earth), 27.5-28.6 GHz (Earth-to-space), 29.5-30 GHz (Earth-to-space) by a non-geostationary-satellite system in the fixed-satellite service is subject to application of the provisions of No. 9.12 for coordination with other non-geostationary-satellite systems in the fixed-satellite service. Non-geostationary-satellite systems in the fixed-satellite service shall not claim protection from geostationary-satellite networks in the fixed-satellite service operating in accordance with the Radio Regulations, irrespective of the dates of receipt by the Bureau of the complete coordination or notification information, as appropriate, for the non-geostationary-satellite systems in the fixed-satellite service and of the complete coordination or notification information, as appropriate, for the geostationary-satellite networks, and No. 5.43A does not apply. Non-geostationary-satellite systems in the fixed-satellite service in the above bands shall be operated in such a way that any unacceptable interference that may occur during their operation shall be rapidly eliminated.

5.493 The broadcasting-satellite service in the band 12.5-12.75 GHz in Region 3 is limited to a power flux-density not exceeding –111 dB(W/(m² · 27 MHz)) for all conditions and for all methods of modulation at the edge of the service area.

5.494 Additional allocation: in Algeria, Angola, Saudi Arabia, Bahrain, Cameroon, the Central African Rep., Congo (Rep. of the), Côte d’Ivoire, Egypt, the United Arab Emirates, Eritrea, Ethiopia, Gabon, Ghana, Guinea, Iraq, Israel, the Libyan Arab Jamahiriya, Jordan, Kuwait, Lebanon, Madagascar, Mali, Morocco, Mongolia, Nigeria, Qatar, the Syrian Arab Republic, the Dem. Rep. of the Congo, Somalia, Sudan, Chad, Togo and Yemen, the band 12.5-12.75 GHz is also allocated to the fixed and mobile, except aeronautical mobile, services on a primary basis.

5.495 Additional allocation: in Bosnia and Herzegovina, France, Greece, Liechtenstein, Monaco, Montenegro, Uganda, Romania, Serbia, Switzerland, Tanzania and Tunisia, the band 12.5-12.75 GHz is also allocated to the fixed and mobile, except aeronautical mobile, services on a secondary basis. (WRC-07)

5.496 Additional allocation: in Austria, Azerbaijan, Kyrgyzstan and Turkmenistan, the band 12.5-12.75 GHz is also allocated to the fixed service and the mobile, except aeronautical mobile, service on a primary basis. However, stations in these services shall not cause harmful interference to fixed-satellite service earth stations of countries in Region 1 other than those listed in this footnote. Coordination of these earth stations is not required with stations of the fixed and mobile services of the countries listed in this footnote. The power flux-density limit at the Earth's surface given in Table 21-4 of Article 21, for the fixed-satellite service shall apply on the territory of the countries listed in this footnote.

NG118 In the bands 2025-2110 MHz, 6875-7125 MHz, and 12.7-13.25 GHz, television translator relay stations may be authorized to use frequencies on a secondary basis to other stations in the Television Broadcast Auxiliary Service that are operating in accordance with the Table of Frequency Allocations.

SpectrumWiki

Direct Broadcast Satellite TV

In the U.S., the band 12.2-12.7 GHz is used for satellite TV, such as DISH Network and DIRECTV. These high-power emissions are designed to be received directly by consumers using small (18") satellite dishes.

Each satellite typically carries 16 to 32 transponders, each with a bandwidth of 27 MHz. Each transponder carries multiple television and audio channels. The transponder signals are transmitted in one of two orthoganal polarizations, which allows the transponder signals to overlap in frequency.

As an example, the Echostar 12 satellite in GEO orbit at 61.5 deg W longitude (one of the satellites used by DISH Network) has the following set of transponders:

Center Frequency (MHz)	Polarization (Left/Right Circular)
12224	R
12239	L
12253	R
12266	L
12282	R
12311	R
12326	L
12341	R
12355	L
12370	R
12399	R
12414	L
12428	R
12443	L
12472	L
12486	R
12501	L
12516	R
12530	L
12545	R
12559	L
12574	R
12603	R
12632	R
12647	L
12661	R
12676	L

Various Internet sites list the transponders used by each satellite, and even map the specific TV stations carried on each transponder (see the references).

An attached plot shows the 12.2-12.7 GHz band as observed at a radio astronomy site in West Virginia. The individual transponders are clearly visible, and multiple satellites are visible as the receiving antenna sweeps along the geostationary arc.

Frequency Bands
Band	Use	Service	Table
12.2 - 12.7 GHz	Direct Broadcast Satellite TV	BS	N

External Links:

List of satellite transponders by company & satellite (SATHINT)