1. VDL Mode 4 Cosite Investigations ACP WG-M 9 th Meeting, Agenda item 3 Montreal, October 2004

2. 13-14/10/04COMT31 Cosite Investigations Plan Developed with the contribution of several parties at a meeting hosted by EUROCONTROL Identifies the required activities to complete the investigations Lays out a strategy for the test cases to be investigated

3. 13-14/10/04COMT31 EUROCONTROL Work Plan Cosite Investigations work organised in three phases Phase 1: development of cosite interference testing scenarios and detailed testing plans (focus of current work); Phase 2: actual testing using the scenarios and tests defined in Phase 1; Phase 3: evaluation of test results

4. 13-14/10/04COMT31 Scheduling of work Q4 2004 Completion of Phase 1 Initiation of test campaign (Phase 2) Q2 2005 Completion of Phase 2 Q3/Q4 2005 Completion of Phase 3

5. 13-14/10/04COMT31 Other related activities voice transmissions profile statistical analysis considering both ATC & AOC current usage of VHF voice radio based on data obtained from a major European airline proposes voice usage profile as input to cosite investigations voice receptions profile preliminary analysis considering signal levels only analytical-based and derives assumptions based on current airspace regimes

6. 13-14/10/04COMT31 Current Work: Phase 1 Current Status development of detailed testing scenarios and testing plans Contract with ISA Telecoms to carry out Phase 1 Details will be presented by ISA TELECOMS