------------------------------------------------ ----------------------------------------------------
  **World Radiocommunication Conference (WRC-07)\  ![](media/image1.png){width="1.9270833333333333in"
  Geneva, 22 October - 16 November 2007**          height="0.8125in"}

                                                   

                                                   

  **PLENARY MEETING**                              **Addendum 21 to Document 10-E**

                                                   **22 May 2007**

                                                   **Original: English**

                                                   

  EUROPEAN COMMON PROPOSALS FOR THE\               
  WORK OF THE CONFERENCE                           

  PART 21                                          

  Agenda item 1.21                                 
  ------------------------------------------------ ----------------------------------------------------

1.21 to consider the results of studies regarding the compatibility
between the radio astronomy service and the active space services in
accordance with Resolution **740 (WRC‑03)**, in order to review and
update, if appropriate, the tables of threshold levels used for
consultation that appear in the Annex to Resolution **739** **(WRC‑03)**

Compatibility between the radio astronomy service and the active space
services in accordance with Resolution 740 (WRC-03)

[]{.mark}

### Introduction {#introduction .heading_b1}

Resolution 740 (WRC-03) invites ITU-R to study the compatibility between
the RAS and the corresponding active services as listed in the table of
this Resolution only, with a view to updating or developing ITU-R
Recommendations, if appropriate.

The results of the studies should be considered in order to review and
update, if appropriate, the tables of threshold levels for consultation
in the Annex of Resolution 739 (WRC-03).

The ITU-R continues to conduct "band by band" studies in order to assess
the compatibility between the RAS operating in identified bands and the
active space services operating in adjacent or nearby bands. Based on
these studies it is proposed to specify threshold limits for some bands
where studies have concluded and included in the Report ITU-R SM.2091
that the RAS protection criteria may be met and that the limits would
not unduly constrain the development of active services. These threshold
levels should be incorporated in the updated version of the Annex of
Resolution 739.

ARTICLE 5

Frequency allocations

Section IV -- Table of Frequency Allocations\
(See No. 2.1)

**MOD** EUR/10A21/1

75.2-137.175 MHz

+-----------------------+-----------------------+-----------------------+
| Allocation to         |                       |                       |
| services              |                       |                       |
+-----------------------+-----------------------+-----------------------+
| Region 1              | Region 2              | Region 3              |
+-----------------------+-----------------------+-----------------------+
| **137-137.025** SPACE |                       |                       |
| OPERATION             |                       |                       |
| (space-to-Earth)      |                       |                       |
|                       |                       |                       |
| MET                   |                       |                       |
| EOROLOGICAL-SATELLITE |                       |                       |
| (space-to-Earth)      |                       |                       |
|                       |                       |                       |
| MOBILE-SATELLITE      |                       |                       |
| (space-to-Earth)      |                       |                       |
| 5.208A 5.209 MOD      |                       |                       |
| 5.347A                |                       |                       |
|                       |                       |                       |
| SPACE RESEARCH        |                       |                       |
| (space-to-Earth)      |                       |                       |
|                       |                       |                       |
| Fixed                 |                       |                       |
|                       |                       |                       |
| Mobile except         |                       |                       |
| aeronautical mobile   |                       |                       |
| (R)                   |                       |                       |
|                       |                       |                       |
| 5.204 5.205 5.206     |                       |                       |
| 5.207 5.208           |                       |                       |
+-----------------------+-----------------------+-----------------------+
| **137.025-137.175**   |                       |                       |
| SPACE OPERATION       |                       |                       |
| (space-to-Earth)      |                       |                       |
|                       |                       |                       |
| MET                   |                       |                       |
| EOROLOGICAL-SATELLITE |                       |                       |
| (space-to-Earth)      |                       |                       |
|                       |                       |                       |
| SPACE RESEARCH        |                       |                       |
| (space-to-Earth)      |                       |                       |
|                       |                       |                       |
| Fixed                 |                       |                       |
|                       |                       |                       |
| Mobile-satellite      |                       |                       |
| (space-to-Earth)      |                       |                       |
| 5.208A 5.209 MOD      |                       |                       |
| 5.347A                |                       |                       |
|                       |                       |                       |
| Mobile except         |                       |                       |
| aeronautical mobile   |                       |                       |
| (R)                   |                       |                       |
|                       |                       |                       |
| 5.204 5.205 5.206     |                       |                       |
| 5.207 5.208           |                       |                       |
+-----------------------+-----------------------+-----------------------+

[]{.mark}

**Reasons:** This footnote is related to Resolution 739. Taking into
account that the frequency band\
137-138 MHz is added to the Annex of this Resolution as proposed in
EUR/10A21/7 below, this footnote shall be included in this Section of RR
Article 5.

**MOD** EUR/10A21/2

**5.347A** In the bands:

137-138 MHz,\
387-390 MHz,\
400.15-401 MHz,\
620-790 MHz,\
1 452-1 492 MHz,\
1 525-1 559 MHz,\
1 559-1 610 MHz,\
1 613.8-1 626.5 MHz,\
2 655-2 670 MHz,\
2 670-2 690 MHz,\
21.4-22 GHz,

Resolution **739** **(Rev.WRC-07)** applies.     (WRC-07)

**Reasons:** This footnote is related to Resolution 739. Taking into
account that new frequency bands are added to this Resolution, as
proposed in EUR/10A21/7 below, this footnote shall be modified.

**MOD** EUR/10A21/3

137.175-148 MHz

+-----------------------+-----------------------+-----------------------+
| Allocation to         |                       |                       |
| services              |                       |                       |
+-----------------------+-----------------------+-----------------------+
| Region 1              | Region 2              | Region 3              |
+-----------------------+-----------------------+-----------------------+
| **137.175-137.825**   |                       |                       |
| SPACE OPERATION       |                       |                       |
| (space-to-Earth)      |                       |                       |
|                       |                       |                       |
| MET                   |                       |                       |
| EOROLOGICAL-SATELLITE |                       |                       |
| (space-to-Earth)      |                       |                       |
|                       |                       |                       |
| MOBILE-SATELLITE      |                       |                       |
| (space-to-Earth)      |                       |                       |
| 5.208A 5.209 MOD      |                       |                       |
| **5.347A**            |                       |                       |
|                       |                       |                       |
| SPACE RESEARCH        |                       |                       |
| (space-to-Earth)      |                       |                       |
|                       |                       |                       |
| Fixed                 |                       |                       |
|                       |                       |                       |
| Mobile except         |                       |                       |
| aeronautical mobile   |                       |                       |
| (R)                   |                       |                       |
|                       |                       |                       |
| 5.204 5.205 5.206     |                       |                       |
| 5.207 5.208           |                       |                       |
+-----------------------+-----------------------+-----------------------+
| **137.825-138** SPACE |                       |                       |
| OPERATION             |                       |                       |
| (space-to-Earth)      |                       |                       |
|                       |                       |                       |
| MET                   |                       |                       |
| EOROLOGICAL-SATELLITE |                       |                       |
| (space-to-Earth)      |                       |                       |
|                       |                       |                       |
| SPACE RESEARCH        |                       |                       |
| (space-to-Earth)      |                       |                       |
|                       |                       |                       |
| Fixed                 |                       |                       |
|                       |                       |                       |
| Mobile-satellite      |                       |                       |
| (space-to-Earth)      |                       |                       |
| 5.208A 5.209 MOD      |                       |                       |
| 5.347A                |                       |                       |
|                       |                       |                       |
| Mobile except         |                       |                       |
| aeronautical mobile   |                       |                       |
| (R)                   |                       |                       |
|                       |                       |                       |
| 5.204 5.205 5.206     |                       |                       |
| 5.207 5.208           |                       |                       |
+-----------------------+-----------------------+-----------------------+

[]{.mark}

**Reasons:** This footnote is related to Resolution 739. Taking into
account that the frequency band\
137-138 MHz is added to the Annex of this Resolution, as proposed in
EUR/10A21/7 below, this footnote shall be included in this Section of RR
Article 5.

**MOD** EUR/10A21/4

335.4-410 MHz

+-----------------------+-----------------------+-----------------------+
| Allocation to         |                       |                       |
| services              |                       |                       |
+-----------------------+-----------------------+-----------------------+
| Region 1              | Region 2              | Region 3              |
+-----------------------+-----------------------+-----------------------+
| **387-390** FIXED     |                       |                       |
|                       |                       |                       |
| MOBILE                |                       |                       |
|                       |                       |                       |
| Mobile-satellite      |                       |                       |
| (space-to-Earth)      |                       |                       |
| 5.208A 5.254 5.255    |                       |                       |
| MOD **5.347A**        |                       |                       |
+-----------------------+-----------------------+-----------------------+
| \...                  |                       |                       |
+-----------------------+-----------------------+-----------------------+
| **400.15-401**        |                       |                       |
| METEOROLOGICAL AIDS   |                       |                       |
|                       |                       |                       |
| MET                   |                       |                       |
| EOROLOGICAL-SATELLITE |                       |                       |
| (space-to-Earth)      |                       |                       |
|                       |                       |                       |
| MOBILE-SATELLITE      |                       |                       |
| (space-to-Earth)      |                       |                       |
| 5.208A 5.209 MOD      |                       |                       |
| **5.347A**            |                       |                       |
|                       |                       |                       |
| SPACE RESEARCH        |                       |                       |
| (space-to-Earth)      |                       |                       |
| 5.263                 |                       |                       |
|                       |                       |                       |
| Space operation       |                       |                       |
| (space-to-Earth)      |                       |                       |
|                       |                       |                       |
| 5.262 5.264           |                       |                       |
+-----------------------+-----------------------+-----------------------+

**Reasons:** This footnote is related to Resolution 739. Taking into
account that the frequency bands 387-390 MHz and 400.15-401 MHz are
added to the Annex of this Resolution, as proposed in EUR/10A21/7 below,
this footnote shall be included in these Sections of RR Article 5.

**MOD** EUR/10A21/5

460-890 MHz

+----------------------+----------------------+-----------------------+
| Allocation to        |                      |                       |
| services             |                      |                       |
+----------------------+----------------------+-----------------------+
| Region 1             | Region 2             | Region 3              |
+----------------------+----------------------+-----------------------+
| > **470-790**        | > **470-512**        | > **470-585**         |
| >                    | >                    | >                     |
| > BROADCASTING       | > BROADCASTING       | > FIXED               |
| >                    | >                    | >                     |
| > 5.149 5.291A 5.294 | > Fixed              | > MOBILE              |
| > 5.296\             | >                    | >                     |
| > 5.300 5.302 5.304  | > Mobile             | > BROADCASTING        |
| > 5.306\             | >                    | >                     |
| > 5.311 5.312 MOD    | > 5.292 5.293        | > 5.291 5.298         |
| > 5.347A             | >                    | >                     |
| >                    | > **512-608**        | > **585-610**         |
| > **790-862**        | >                    | >                     |
| >                    | > BROADCASTING       | > FIXED               |
| > FIXED              | >                    | >                     |
| >                    | > 5.297              | > MOBILE              |
| > BROADCASTING       | >                    | >                     |
| >                    | > **608-614**        | > BROADCASTING        |
| > 5.312 5.314 5.315  | >                    | >                     |
| > 5.316 5.319 5.321  | > RADIO ASTRONOMY    | > RADIONAVIGATION     |
|                      | >                    | >                     |
|                      | > Mobile-satellite   | > 5.149 5.305 5.306   |
|                      | > except\            | > 5.307               |
|                      | > aeronautical       | >                     |
|                      | > mobile-satellite\  | > **610-890**         |
|                      | > (Earth-to-space)   | >                     |
|                      | >                    | > FIXED               |
|                      | > **614-806**        | >                     |
|                      | >                    | > MOBILE 5.317A       |
|                      | > BROADCASTING       | >                     |
|                      | >                    | > BROADCASTING        |
|                      | > Fixed              |                       |
|                      | >                    |                       |
|                      | > Mobile             |                       |
|                      | >                    |                       |
|                      | > 5.293 5.309 5.311  |                       |
|                      | > MOD 5.347A         |                       |
|                      | >                    |                       |
|                      | > **806-890**        |                       |
|                      | >                    |                       |
|                      | > FIXED              |                       |
|                      | >                    |                       |
|                      | > MOBILE 5.317A      |                       |
|                      | >                    |                       |
|                      | > BROADCASTING       |                       |
+----------------------+----------------------+-----------------------+
| > **862-890**        |                      |                       |
| >                    |                      |                       |
| > FIXED              |                      |                       |
| >                    |                      |                       |
| > MOBILE except      |                      |                       |
| > aeronautical\      |                      |                       |
| > mobile 5.317A      |                      |                       |
| >                    |                      |                       |
| > BROADCASTING 5.322 |                      |                       |
+----------------------+----------------------+-----------------------+
| > 5.319 5.323        | > 5.317 5.318        | > 5.149 5.305 5.306   |
|                      |                      | > 5.307\              |
|                      |                      | > 5.311 5.320 MOD     |
|                      |                      | > 5.347A              |
+----------------------+----------------------+-----------------------+

**Reasons:** This footnote is related to Resolution 739. Taking into
account that frequency band 620‑790 MHz may be added to the Annex of
this Resolution, as proposed in EUR/10A21/7 below, this footnote shall
be included in this Section of RR Article 5.

**MOD** EUR/10A21/6

1 525-1 610 MHz

+-----------------------+-----------------------+-----------------------+
| Allocation to         |                       |                       |
| services              |                       |                       |
+-----------------------+-----------------------+-----------------------+
| Region 1              | Region 2              | Region 3              |
+-----------------------+-----------------------+-----------------------+
| **1 559-1 610**       |                       |                       |
| AERONAUTICAL          |                       |                       |
| RADIONAVIGATION       |                       |                       |
|                       |                       |                       |
| RADI                  |                       |                       |
| ONAVIGATION-SATELLITE |                       |                       |
| (space-to-Earth)      |                       |                       |
| (space-to-space)      |                       |                       |
| 5.328B 5.329A MOD     |                       |                       |
| 5.347A                |                       |                       |
|                       |                       |                       |
| 5.341 5.362B 5.362C   |                       |                       |
| 5.363                 |                       |                       |
+-----------------------+-----------------------+-----------------------+

**Reasons:** This footnote is related to Resolution 739. Taking into
account that the frequency band 1 559-1 610 MHz may be added to the
Annex of this Resolution, as proposed in EUR/10A21/7 below, this
footnote shall be included in this Section of RR Article 5.

**MOD** EUR/10A21/7

RESOLUTION 739 (Rev.WRC‑07)

Compatibility between the radio astronomy service and the active\
space services in certain adjacent and nearby frequency bands

The World Radiocommunication Conference (Geneva, 2007),

considering

*a)* that adjacent or nearby primary service allocations have been made
to the radio astronomy service, and to various space services, such as
the fixed‑satellite service (FSS), radionavigation-satellite service
(RNSS), mobile‑satellite service (MSS) and broadcasting‑satellite
service (BSS), hereafter referred to as "active space services";

*b)* that, in many cases, the frequencies used by the radio astronomy
service (RAS) are chosen to study natural phenomena producing radio
emissions at frequencies fixed by the laws of nature, so shifting
frequency to avoid or mitigate interference problems may not be
possible;

*c)* that Report ITU‑R SM.2091 provides a methodology for conducting,
and a framework for documenting the results of, compatibility studies
between active space service and the radio astronomy service band-pairs;

*d)* that Report ITU‑R SM.2091 also provides the results of
compatibility studies between the radio astronomy service and an active
space service in certain adjacent and nearby bands;

*e)* that appropriate consultation between administrations has the
potential to lead to the development of innovative solutions and to the
rapid deployment of systems;

*f)* that, for technical or operational reasons, more stringent spurious
emission limits than the general limits in Appendix **3** may be
required to protect the RAS from active services in specific bands,

noting

*a)* that the additional burden of undertaking any technical examination
should not be placed on the Radiocommunication Bureau;

*b)* that a consultation procedure, as contained in this Resolution,
would not place an additional burden on the Bureau;

*c)* that Recommendation ITU‑R M.1583 provides a methodology based on
the equivalent power flux-density (epfd) concept for calculation of
interference resulting from unwanted emissions from non-geostationary
(non-GSO) satellite systems of the MSS or RNSS into radio astronomy
stations;

*d)* that Recommendation ITU‑R S.1586 provides a methodology based on
the epfd concept for calculation of interference resulting from unwanted
emissions from non-GSO systems of the FSS into radio astronomy stations;

*e)* that the methodology described in these Recommendations may also be
used to study the case of non-GSO systems in the BSS;

*f)* that Recommendation ITU‑R RA.1631 provides antenna patterns to be
used for compatibility analyses between non‑GSO systems and RAS
stations, based on the epfd concept;

*g)* that Recommendation ITU‑R RA.1513 provides acceptable levels of
data loss to radio astronomy observations, stating in particular that
the percentage of data loss caused by any system should be lower than
2%;

*h)* that some of the results documented in Report ITU‑R SM.2091 may be
used as threshold levels to initiate the consultation procedure;

*i)* that the results of successful consultation between concerned
administrations would ensure that the interests of both the active and
radio astronomy services are considered;

*j)* that measures taken by active space services to protect radio
astronomy stations from interference may result in increased costs
and/or reduced capabilities for those services;

*k)* that conversely, not taking such measures may result in additional
operating costs and reduced operational effectiveness for the radio
astronomy stations concerned;

*l)* that the implementation of additional interference mitigation
measures at the radio astronomy station may increase operating costs and
reduce observational effectiveness;

*m)* that conversely, not implementing such measures may impose upon the
active space services an additional cost burden and reduction in service
capability,

recognizing

*a)* that unwanted emissions produced by stations of the active space
services may cause unacceptable interference to stations of the RAS;

*b)* that, although some unwanted emissions from transmitters on space
stations can be controlled through careful design methods and
appropriate testing procedures, other unwanted emissions, such as
narrowband spurious emissions, generated by uncontrollable and/or
unpredictable physical mechanisms, may only be detected after the
spacecraft is launched;

*c)* that there is an uncertainty in the pre-launch assessment of the
levels of unwanted emissions;

*d)* that it is necessary to ensure an equitable sharing of burden for
achieving compatibility between the active space services and the RAS;

*e)* that for those cases where difficulties are encountered in meeting
the values in the Annex, a consultation procedure could be used to
resolve the difficulties,

resolves

1 that an administration takes all reasonable steps to ensure that any
space stations or satellite system being designed and constructed to
operate in the bands in the Annex 1 meet the values given therein at any
radio astronomy station operating in the corresponding bands identified
in this Annex;

2 that in the event that during construction and prior to launch it is
determined that, after having considered all reasonable means, the
unwanted emissions from the space station cannot meet the values given
in the Annex 1, the administration that notified the satellite system
contacts, as soon as possible, the administration operating the radio
astronomy station to confirm that *resolves* 1 has been fulfilled, and
the concerned administrations enter into a consultation process in order
to identify all practicable steps with a view to achieving a mutually
acceptable solution;

3 that in the event, following the space station launch, an
administration operating a radio astronomy station determines that, due
to unexpected circumstances, a space station or satellite system does
not meet the values for unwanted emissions given in the Annex 1 at that
radio astronomy station, it contacts the administration that notified
the satellite system so that the administration that notified the
satellite system confirms that *resolves* 1 has been fulfilled, and the
concerned administrations enter into a consultation process in order to
identify further steps with a view to achieving a mutually acceptable
solution;

4 that the radio astronomy stations to be taken into account in applying
*resolves* 1, 2 and 3 are those which are operating in the frequency
band(s) identified in the Annex 1 and which are notified before the date
of reception of the advance publication information of the satellite
system to which this Resolution applies;

5 that the satellite system to be considered in the application of the
above *resolves* are those designed to operate in the space service
frequency bands listed in the tables of Annex 1 for which advance
publication information (API) is received by the Bureau following on
1 January 2005 or the entry into force of the Final Acts of this
conference as specified in these tables;

6 that the objective of the consultation process in *resolves *1, 2
and 3 is to achieve a mutually acceptable solution, using as guidance
Report ITU‑R SM.2091 and any other ITU‑R Recommendations deemed relevant
by the concerned administrations;

7 that the Bureau shall make no examination or finding with respect to
this Resolution under either Article **9** or **11**,

invites administrations

1 to take all appropriate and practicable steps, from the design phase
onward, to ensure that unwanted emissions are minimized from space
stations that are planned to operate in one or more space service
allocations, in order to avoid exceeding the threshold levels of
unwanted emissions identified in the Annex 1 at any radio astronomy
station;

2 to take all practicable steps, from the design phase onward, to
minimize the sensitivity of radio astronomy stations to interference and
to take into account the need to implement interference mitigation
measures.

[]{.mark}

[]{.mark}

ANNEX 1 TO RESOLUTION 739 (WRC-03)

Unwanted emission threshold levels

The unwanted emission threshold levels applicable to geostationary space
stations are given in Table 1‑1 in terms of power flux-density (pfd) in
a reference bandwidth produced at a radio astronomy station by any
geostationary space station.

In Table 1‑1 the unwanted emission threshold levels given in the fourth,
sixth and eighth columns (associated with the reference bandwidth
contained in the adjacent columns) should be met by any geostationary
space stations operating in the bands indicated in the second column at
the radio astronomy station operating in the band mentioned in the third
column.

The unwanted emission threshold levels applicable to space stations of
non-geostationary systems are given in Table 1‑2 in terms of the
equivalent power flux-density (epfd), produced at a radio astronomy
station in a reference bandwidth by all non-geostationary space stations
in visibility of the considered radio astronomy station, not to be
exceeded during a given percentage of time, over the whole sky.

In Table 1‑2 the epfd value given in the fourth, sixth and eighth
columns (associated with the reference bandwidths contained in the
adjacent column) should be met by non-geostationary space systems
operating in the bands indicated in the second column at the radio
astronomy station operating in the band mentioned in the third column.
The epfd value at a given radio astronomy station shall be evaluated by
using the antenna pattern and the RAS maximum antenna gain given in
Recommendation ITU‑R RA.1631. Guidance on the calculation of epfd can be
found in Recommendations ITU‑R S.1586 and ITU‑R M.1583. The elevation
angles of the radio astronomy stations to be taken into account in the
epfd calculation are those higher than the minimum elevation angle
θ*~min~* of the radio telescope. In the absence of such information a
value of 5° shall be taken. The percentage of time during which the epfd
level shall not be exceeded is mentioned in Note ^(1)^ of Table 1‑2.

The unwanted emission threshold levels applicable to any space station
of non-geostationary systems in the RNSS are given in Table 1-3 in terms
of pfd in a reference bandwidth produced at a radio astronomy station by
any non-geostationary space station.

In Table 1-3 the unwanted emission threshold levels given in the fourth,
sixth and eighth columns (associated with the reference bandwidth
contained in the adjacent columns) should be met by any
**non-geostationary** space station operating in the bands indicated in
the second column at the radio astronomy station operating in the band
mentioned in the third column.

TABLE 1-1

pfd thresholds for unwanted emissions from geostationary space stations\
at a radio astronomy station

<table>
<colgroup>
<col style="width: 13%" />
<col style="width: 12%" />
<col style="width: 13%" />
<col style="width: 8%" />
<col style="width: 7%" />
<col style="width: 8%" />
<col style="width: 7%" />
<col style="width: 8%" />
<col style="width: 8%" />
<col style="width: 11%" />
</colgroup>
<tbody>
<tr class="odd">
<td rowspan="2"><strong>Space service</strong></td>
<td rowspan="2">Space service<br />
band</td>
<td rowspan="2">Radio astronomy<br />
band</td>
<td colspan="2">Single dish, continuum observations</td>
<td colspan="2">Single dish, spectral line observations</td>
<td colspan="2">VLBI</td>
<td rowspan="3"><p>Condition of application:</p>
<p>The API is received by the Bureau following the entry into force of
the Final Acts of:</p></td>
</tr>
<tr class="even">
<td>pfd<sup>(1)</sup></td>
<td>Reference bandwidth</td>
<td>pfd<sup>(1)</sup></td>
<td>Reference bandwidth</td>
<td>pfd<sup>(1)</sup></td>
<td>Reference bandwidth</td>
</tr>
<tr class="odd">
<td></td>
<td><strong>(MHz)</strong></td>
<td><strong>(MHz)</strong></td>
<td><strong>(dB(W/m<sup>2</sup>))</strong></td>
<td><strong>(MHz)</strong></td>
<td><strong>(dB(W/m<sup>2</sup>))</strong></td>
<td><strong>(kHz)</strong></td>
<td><strong>(dB(W/m<sup>2</sup>))</strong></td>
<td><strong>(kHz)</strong></td>
</tr>
<tr class="even">
<td>MSS (space-to-Earth)</td>
<td>387-390</td>
<td>322-328.6</td>
<td>–189</td>
<td>6.6</td>
<td>–204</td>
<td>10</td>
<td>–177</td>
<td>10</td>
<td>WRC-07</td>
</tr>
<tr class="odd">
<td>BSS</td>
<td>620-790</td>
<td>608-614</td>
<td>–185</td>
<td>6</td>
<td>NA</td>
<td>NA</td>
<td>–172</td>
<td>20</td>
<td>WRC-07</td>
</tr>
<tr class="even">
<td>BSS<br />
MSS (space-to-Earth)</td>
<td>1 452-1 492<br />
1 525-1 559</td>
<td>1 400-1 427</td>
<td>–180</td>
<td>27</td>
<td>–196</td>
<td>20</td>
<td>–166</td>
<td>20</td>
<td>01/01/2005</td>
</tr>
<tr class="odd">
<td>MSS (space-to-Earth)<br />
MSS (space-to-Earth)</td>
<td>1 525-1 559<br />
1 613.8-1 626.5</td>
<td>1 610.6-1 613.8</td>
<td>NA</td>
<td>NA</td>
<td>–194</td>
<td>20</td>
<td>–166</td>
<td>20</td>
<td>01/01/2005</td>
</tr>
<tr class="even">
<td>RNSS (space-to-Earth)</td>
<td>1 559-1 610</td>
<td>1 610.6-1 613.8</td>
<td>NA</td>
<td>NA</td>
<td>–194</td>
<td>20</td>
<td>–166</td>
<td>20</td>
<td>WRC-07</td>
</tr>
<tr class="odd">
<td>BSS<br />
FSS (space-to-Earth)</td>
<td>2 655-2 670</td>
<td>2 690-2 700</td>
<td>–177</td>
<td>10</td>
<td>NA</td>
<td>NA</td>
<td>–161</td>
<td>20</td>
<td>01/01/2005</td>
</tr>
<tr class="even">
<td>FSS (space-to-Earth)</td>
<td>2 670-2 690</td>
<td>2 690-2 700<br />
(in Regions 1 and 3)</td>
<td>–177</td>
<td>10</td>
<td>NA</td>
<td>NA</td>
<td>–161</td>
<td>20</td>
<td>01/01/2005</td>
</tr>
<tr class="odd">
<td></td>
<td><strong>(GHz)</strong></td>
<td><strong>(GHz)</strong></td>
<td>–</td>
<td>–</td>
<td>–</td>
<td>–</td>
<td>–</td>
<td>–</td>
<td></td>
</tr>
<tr class="even">
<td>BSS (space-to-Earth)</td>
<td>21.4-22.0</td>
<td>22.21-22.5</td>
<td>–146</td>
<td>290</td>
<td>–162</td>
<td>250</td>
<td>–128<sup>(2)</sup></td>
<td>250</td>
<td>WRC-07<sup>(2)</sup></td>
</tr>
<tr class="odd">
<td colspan="10"><p>NA: Not applicable, measurements of this type are
not made in this band.</p>
<p>y long baseline interferometry</p></td>
</tr>
<tr class="even">
<td colspan="10"><p><sup>(1)</sup> Integrated over the reference
bandwidth with an integration time of 2 000 s.</p>
<p><sup>(2)</sup> This pfd threshold applicable for the protection for
VLBI observations shall apply for any space stations of the
geostationary system of the relevant space services for which the API
was received by the Bureau after 1 January 2005.</p></td>
</tr>
</tbody>
</table>

TABLE 1-2

epfd thresholds^\*^ for unwanted emissions from non-GSO satellite
systems\
at a radio astronomy station

<table>
<colgroup>
<col style="width: 13%" />
<col style="width: 12%" />
<col style="width: 13%" />
<col style="width: 8%" />
<col style="width: 7%" />
<col style="width: 8%" />
<col style="width: 7%" />
<col style="width: 8%" />
<col style="width: 8%" />
<col style="width: 13%" />
<col style="width: 0%" />
</colgroup>
<tbody>
<tr class="odd">
<td><strong>Space service</strong></td>
<td>Space service<br />
band</td>
<td>Radio astronomy<br />
band</td>
<td colspan="2">Single dish, continuum observations</td>
<td colspan="2">Single dish, spectral line observations</td>
<td colspan="2">VLBI</td>
<td rowspan="3"><p>Condition of application:</p>
<p>The API is received by the Bureau following the entry into force of
the Final Acts of:</p></td>
<td></td>
</tr>
<tr class="even">
<td></td>
<td></td>
<td></td>
<td>epfd<sup>(1)</sup></td>
<td>Reference bandwidth</td>
<td>epfd<sup>(1)</sup></td>
<td>Reference bandwidth</td>
<td>epfd<sup>(1)</sup></td>
<td>Reference bandwidth</td>
<td></td>
</tr>
<tr class="odd">
<td></td>
<td><strong>(MHz)</strong></td>
<td><strong>(MHz)</strong></td>
<td><strong>(dB(W/m<sup>2</sup>))</strong></td>
<td><strong>(MHz)</strong></td>
<td><strong>(dB(W/m<sup>2</sup>))</strong></td>
<td><strong>(kHz)</strong></td>
<td><strong>(dB(W/m<sup>2</sup>))</strong></td>
<td><strong>(kHz)</strong></td>
<td></td>
</tr>
<tr class="even">
<td>MSS (space-to-Earth)</td>
<td>137-138</td>
<td>150.05-153</td>
<td>–238</td>
<td>2.95</td>
<td>NA</td>
<td>NA</td>
<td>NA</td>
<td>NA</td>
<td>WRC-07</td>
<td></td>
</tr>
<tr class="odd">
<td>MSS (space-to-Earth)</td>
<td>387-390</td>
<td>322-328.6</td>
<td>–240</td>
<td>6.6</td>
<td>–255</td>
<td>10</td>
<td>–228</td>
<td>10</td>
<td>WRC-07</td>
<td></td>
</tr>
<tr class="even">
<td>MSS (space-to-Earth)</td>
<td>400.15-401</td>
<td>406.1-410</td>
<td>–242</td>
<td>3.9</td>
<td>NA</td>
<td>NA</td>
<td>NA</td>
<td>NA</td>
<td>WRC-07</td>
<td></td>
</tr>
<tr class="odd">
<td>BSS (space-to-Earth)</td>
<td>620-790</td>
<td>608-614</td>
<td>–241</td>
<td>6</td>
<td>NA</td>
<td>NA</td>
<td>–229</td>
<td>10</td>
<td>WRC-07</td>
<td></td>
</tr>
<tr class="even">
<td>MSS (space-to-Earth)</td>
<td>1 525-1 559</td>
<td>1 400-1 427</td>
<td>–243</td>
<td>27</td>
<td>–259</td>
<td>20</td>
<td>–229</td>
<td>20</td>
<td>WRC-07</td>
<td></td>
</tr>
<tr class="odd">
<td>MSS (space-to-Earth)</td>
<td>1 525-1 559</td>
<td>1 610.6-1 613.8</td>
<td>NA</td>
<td>NA</td>
<td>–258</td>
<td>20</td>
<td>–230</td>
<td>20</td>
<td>WRC-07</td>
<td></td>
</tr>
<tr class="even">
<td>MSS (space-to-Earth)</td>
<td>1 613.8-1 626.5</td>
<td>1 610.6-1 613.8</td>
<td>NA</td>
<td>NA</td>
<td>–258</td>
<td>20</td>
<td>–230</td>
<td>20</td>
<td>01/01/2005</td>
<td></td>
</tr>
<tr class="odd">
<td colspan="11"><p>NA: Not applicable, measurements of this type are
not made in this band.</p>
<p><sup>*</sup> These epfd thresholds should not be exceeded for more
than 2% of time.</p>
<p><sup>(1)</sup> Integrated over the reference bandwidth with an
integration time of 2 000 s.</p></td>
</tr>
</tbody>
</table>

TABLE 1-3

pfd thresholds for unwanted emissions from any space station of non-GSO
satellite systems\
at a radio astronomy station

<table style="width:100%;">
<colgroup>
<col style="width: 13%" />
<col style="width: 12%" />
<col style="width: 13%" />
<col style="width: 7%" />
<col style="width: 7%" />
<col style="width: 7%" />
<col style="width: 7%" />
<col style="width: 7%" />
<col style="width: 8%" />
<col style="width: 13%" />
</colgroup>
<tbody>
<tr class="odd">
<td><strong>Space service</strong></td>
<td>Space service<br />
band</td>
<td>Radio astronomy<br />
band</td>
<td colspan="2">Single dish, continuum observations</td>
<td colspan="2">Single dish, spectral line observations</td>
<td colspan="2">VLBI</td>
<td rowspan="3"><p>Condition of application:</p>
<p>The API is received by the Bureau following the entry into force of
the Final Acts of:</p></td>
</tr>
<tr class="even">
<td></td>
<td></td>
<td></td>
<td>pfd<sup>(1)</sup></td>
<td>Reference bandwidth</td>
<td>pfd<sup>(1)</sup></td>
<td>Reference bandwidth</td>
<td>pfd<sup>(1)</sup></td>
<td>Reference bandwidth</td>
</tr>
<tr class="odd">
<td></td>
<td><strong>(MHz)</strong></td>
<td><strong>(MHz)</strong></td>
<td><strong>(dB(W/m<sup>2</sup>))</strong></td>
<td><strong>(MHz)</strong></td>
<td><strong>(dB(W/m<sup>2</sup>))</strong></td>
<td><strong>(kHz)</strong></td>
<td><strong>(dB(W/m<sup>2</sup>))</strong></td>
<td><strong>(kHz)</strong></td>
</tr>
<tr class="even">
<td>RNSS (space-to-Earth)</td>
<td>1 559-1 610</td>
<td>1 610.6-1 613.8</td>
<td>NA</td>
<td>NA</td>
<td>–194</td>
<td>20</td>
<td>–166</td>
<td>20</td>
<td>WRC-07</td>
</tr>
<tr class="odd">
<td colspan="10"><p>NA: Not applicable, measurements of this type are
not made in this band.</p>
<p><sup>(1)</sup> Integrated over the reference bandwidth with an
integration time of 2 000 s.</p></td>
</tr>
</tbody>
</table>

**Reasons:** The result of studies in relation to Resolution 740
(WRC-03) should be considered WRC-07 in order to review and update, if
appropriate, the tables of threshold levels for consultation in the
Annex of Resolution 739 (WRC-03) (see "*resolves* 2" of Resolution 740
(WRC-03)).

**SUP** EUR/10A21/8

RESOLUTION 740 (WRC-03)

Future compatibility analyses between the radio astronomy service and\
active space services in certain adjacent and nearby frequency bands

**Reasons:** Studies have been completed for all frequency band pairs
contained in Resolution 740 for which contributions have been received.

\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_