**United States of America**

DRAFT PROPOSAL FOR THE WORK OF THE CONFERENCE

**Agenda Item 1.29b:** to consider the results of studies related to
Resolutions **138** **(WRC‑2000)** and **78** **(WRC-2000)** dealing
with sharing between non-GSO and GSO systems;

**Background Information:** WRC-2000 adopted a combination of
single-entry validation, operational and, for 3 and 10 meter antennas in
the 10.7-12.75 GHz band, single-entry additional operational epfd limits
contained in Article **22**, along with the aggregate epfd limits in
Resolution **76 (WRC-2000)**, which apply to non-GSO FSS systems to
protect GSO networks in the bands 10.7-12.75 GHz, 17.8-18.6 GHz, and
19.7-20.2 GHz. The operational epfd limits were adopted to protect
*operational* GSO FSS networks from interference levels that may result
in loss of synchronization, or loss of capacity, or severe degradation
in performance. Resolution **78 (WRC-2000),** *Development of procedures
in case the operational or additional operational limits in Article
**22** are exceeded*, invites the ITU-R to undertake the appropriate
regulatory studies to develop procedures in cases where the operational
or additional operational epfd limits are exceeded at an operational GSO
earth station. Compliance with the operational epfd and additional
operational epfd limits is not subject to verification by the ITU-BR but
by individual administrations.

No. **22.5I** stipulates that if a non-GSO FSS system subject to the
operational or additional operational epfd limits contained in Section
II of Article **22** at an operational receiving earth station within a
GSO network operating in accordance with the Radio Regulations, exceeds
these limits then it is a violation of No. **22.2** except as otherwise
agreed between concerned administrations. Article **15** (section V) of
the Radio Regulations contains the regulatory procedures to address
infringements, which can be applied without modification when non-GSO
FSS systems exceed the operational or additional operational epfd limits
given in Tables **22-4A**, **22‑4A1**, **22-4B** and **22‑4C**. Thus,
the U.S. supports the intent of Method A1 for satisfying this agenda
item (see Section 3.2.2 of the Draft Conference Preparatory Meeting
Report) to apply the existing provisions in Article **15**. Modification
of No. **22.5I** is also proposed in order to point Administrations
toward the procedures for resolving this case of interference. This is a
slight revision of Method A1, which specified no change to either
Article **15** or Article **22**.

**Proposal**:

**USA/ /1 [NOC]{.underline}**

ARTICLE 15

Interferences

**Reasons:** The current procedures in Article **15** are adequate.

ARTICLE 22

Space services

**USA/ /2 MOD**

**22.5I** 6) An administration operating a non-geostationary-satellite
system in the fixed-satellite service which is in compliance with the
limits in Nos. **22.5C**, **22.5D** and **22.5F** shall be considered as
having fulfilled its obligations under No. **22.2** with respect to any
geostationary-satellite network, irrespective of the dates of receipt by
the Bureau of the complete coordination or notification information, as
appropriate, for the non-geostationary-satellite system and the
geostationary-satellite network, provided that the epfd radiated by the
non‑geostationary-satellite system in the fixed-satellite service into
any operating geostationary fixed-satellite service earth station does
not exceed the operational and additional operational limits given in
Tables **22-4A**, **22‑4A1**, **22-4B** and **22‑4C**, when the diameter
of the earth station antenna is equal to the values given in Table
**22-4A**, **22‑4A1** or **22‑4C**, or the gain of the earth station is
equal to or greater than the values given in Table **22‑4B** for the
corresponding orbital inclination of the geostationary fixed-satellite
service satellite. Except as otherwise agreed between concerned
administrations, an administration operating a
non-geostationary-satellite system in the fixed-satellite service that
is subject to the limits in Nos. **22.5C**, **22.5D** and **22.5F** and
which radiates epfd into any operating geostationary fixed-satellite
service earth station at levels in excess of the operational or
additional operational limits given in Tables **22-4A**, **22‑4A1**,
**22-4B** and **22-4C**, when the diameter of the earth station antenna
is equal to the values given in Table **22-4A**, **22‑4A1** or
**22-4C**, or the gain of the earth station is equal to or greater than
the values given in Table **22-4B** for the corresponding orbital
inclination of the geostationary fixed-satellite service satellite,
shall be considered to be in violation of its obligations under
No. **22.2** [and the provisions of Article **15** (section V)
apply.]{.underline} ([Rev.]{.underline} WRC‑[03]{.underline}~~2000~~)

**Reasons:** Article **15** of the Radio Regulations contain provisions
that apply when non-GSO systems exceed the operational or additional
operational epfd limits contained in No. **22.5I**. In order to direct
administrations toward the procedures for addressing infringements, it
is helpful to refer administrations to Article **15** (section V) in No.
**22.5I**.

**USA/ /3 SUP**

RESOLUTION 78 (WRC-2000)

Development of procedures in case the operational or additional\
operational limits in Article 22 are exceeded

**Reasons:** No further studies are needed to develop specific
procedures in case the operational or additional operational limits in
Article **22** are exceeded.