I NTERNATIONAL T ELECOMMUNICATION U NION
Radiocommunication Bureau
(Direct Fax No. +41 22 730 57 85)
Circular Letter
9/LCCE/54
26 October 2000
To Administrations of Member States of the ITU and
Radiocommunication Sector Members participating in the
work of Radiocommunication Study Group 9
Subject:

Adoption of 3 draft new Recommendations and 11 draft revised Recommendations
by Study Group 9 in accordance with § 10.2.2 of Resolution ITU-R 1-3 (Adoption
by a Study Group by correspondence)
At the meeting of Radiocommunication Study Group 9, held from 28 to 29 September 2000, the
Study Group decided to seek adoption of 3 draft new Recommendations and 11 draft revised
Recommendations by correspondence, according to § 10.2.2 of Resolution ITU-R 1-3 (Adoption by
a Study Group by correspondence). Enclosed with this letter are the texts of the draft
Recommendations as edited by Study Group 9.
In accordance with the provisions of § 10.2.2 of Resolution ITU-R 1-3, the consideration period will
last until 26 December 2000. If no objections are received from Member States during the
consideration period, the approval by consultation procedure of § 10.3.5 of Resolution ITU-R 1-3
will be initiated. However, any Member State who objects to the continuation of the approval
procedure for a draft Recommendation is requested to advise the Director of the reason and to
indicate possible changes to the text in order to resolve the problem.
Robert W. Jones
Director, Radiocommunication Bureau
Annexes: 1.
2.
Suppression of Recommendation ITU-R F.761
Docs. 9/4(Rev.1), 9/11(Rev.1), 9/13(Rev.1), 9/30(Rev.1), 9/8(Rev.1), 9/9(Rev.1),
9/10(Rev.1), 9/20(Rev.1), 9/15(Rev.1), 9/14(Rev.1), 9/16(Rev.1), 9/6(Rev.1),
9/7(Rev.1), 9/5(Rev.1)
Distribution:
–
–
–
Administrations of Member States and Radiocommunication Sector Members participating in the work of Study Group 9
Chairman and Vice-Chairmen of Radiocommunication Study Group 9
Secretary-General of the ITU, Director of the Telecommunication Standardization Bureau, Director of the Telecommunication Development
Bureau
Place des Nations
CH-1211 Geneva 20
Switzerland
Telephone +41 22 730 51 11
Telefax Gr3: +41 22 733 72 56
Gr4: +41 22 730 65 00
Telex 421 000 uit ch
Telegram ITU GENEVE
Internet: itumail@itu.int
X.400 S=itumail; P=itu
A=400net; C=ch
-2-
ANNEX 1
Source:
Document 9/22
Study Group 9
SUPPRESSION OF RECOMMENDATION ITU-R F.761
(Under Resolution ITU-R 1)
Recommendation ITU-R F.761 deals with frequency sharing between the fixed service and passive
sensors in the band 18.6-18.8 GHz. However, WRC-2000 introduced the following provisions into
the Radio Regulations:
“ADD S5.522A The emissions of the fixed service and the fixed-satellite service in the
band 18.6-18.8 GHz are limited to the values given in Nos. S21.5A and S21.16.2,
respectively.
ADD S21.5A As an exception to the power levels given in No. S21.5, the sharing
environment within which the Earth exploration-satellite (passive) and space research
(passive) services shall operate in the band 18.6-18.8 GHz is defined by the following
limitations on the operation of the fixed service: the power of each RF carrier frequency
delivered to the input of each antenna of a station in the fixed service in the
band 18.6-18.8 GHz shall not exceed -3 dBW.”
Study Group 9 has reviewed Recommendation ITU-R F.761. In view of the fact that WRC-2000 has
addressed and resolved the sharing criteria for this band, Study Group 9 believes that
Recommendation ITU-R F.761 is now no longer necessary and should be deleted.
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