1. Space Vehicles Directorate; Air Force Research Laboratory, Hanscom AFB; Bedford Massachusetts USA
2. Communication Systems; Lancaster University; Lancaster UK
3. Honorary Research Fellow, University of Kwazulu-Natal; Durban South Africa
4. Institute for Scientific Research, Boston College; Chestnut Hill Massachusetts USA
5. Geophysical Institute, University of Alaska; Fairbanks Alaska USA
6. Solar-Terrestrial Environment Laboratory, Nagoya University; Nagoya Japan
7. Physical Sciences, Embry-Riddle Aeronautical University; Daytona Beach Florida USA