SG 4

Mr. David Weinreich
The Boeing Company
1200 Wilson Boulevard
MC RS-00
Arlington, VA 22209
USA
Tel.: +1 703 4653940
Fax: + 1 703 4653005

SG 6

Mr. E. Reinhart
Vice-Chairman, WP 6S
6449 Linway Terrace
McLean, Va. 22101
USA
Tel.: +1 703 448 9552
Fax: +1 703 448 5920

SG 7

Mr. Robert M. Taylor
Chairman, SG7
TT & C
P.O. Box 629
Rosharon, TX 77583
USA
Tel.: +1 281 3693800
Fax: +1 2181 5952146

SG 8

Mr. Kevin Knappett
Department of Trade and Industry
Radiocommunications Agency
Wyndham House
189, Marsh Wall
London, E14 9SX
UNITED KINGDOM
Tel.: +44 207 2110219
Fax: + 44 207 2110117