1. Radio Astronomy Laboratory, UC Berkeley, Berkeley, CA 94720, USA
2. Department of Astronomy, UC Berkeley, Berkeley, CA 94720, USA
3. Digital Backend Group, Giant Metrewave Radio Telescope, NCRA-TIFR, Pune 410504, India
4. Dunlap Institute for Astronomy & Astrophysics, University of Toronto, 50 St George St, Toronto, ON, M5S 3H4, Canada
5. National Radio Astronomy Observatory, 166 Observatory Rd, Green Bank, WV 24944, USA
6. Steward Observatory, University of Arizona, Tucson, AZ 85721, USA
7. SKA Africa, 3rd Floor, The Park, Park Road, Pinelands, Cape Town 7405, South Africa
8. Department of Physics and Electronics, Rhodes University, P. O. Box 94, Grahamstown 6140, South Africa
9. National Radio Astronomy Observatory, Central Development Laboratory, Charlottesville, VA 22903, USA
10. Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA
11. Academia Sinica, Institute of Astronomy and Astrophysics, Taiwan
12. Department of Physics, Columbia University, 550 W. 120th St. New York, NY 10027, USA
13. ASTRON, Netherlands Institute for Radio Astronomy, 7991 PD Dwingeloo, Netherlands
14. Radboud University, 6525 HP Nijmegen, Netherlands
15. Systems & Technology Research, 600 West Cummings Park, Suite 6500, Woburn, MA 01801, USA
16. Nokia Bell Labs, 200 South Mathilda Avenue, Sunnyvale, CA 94086, USA