| ARO |
Algonquin Radio Observatory in Ontario, Canada |
| ATNF/PARKES |
Australia Telescope National Facility in Parkes, New South Wales, Australia |
| CSIRO |
Commonwealth Scientific and Industrial Research Organization in Epping, New South Wales, Australia |
| HCRO |
Hat Creek Radio Observatory in Castel, California |
| HRO |
Haystack Radio Observatory in Westford, Massachusetts |
| IAR |
Instituto Argentino de Radioastronomia in Villa Elisa, Argentina |
| KPNO |
Kitt Peak National Observatory in Tucson, Arizona |
| MPIFR |
Max Planck Institut für Radioastronomie in Effelesberg, West Germany |
| NAIC |
National Astronomy and Ionospheric Center ? Arecibo Observatory in Arecibo, Puerto Rico |
| NANÇAY |
Observatoire de Nançay in Nançay, France |
| NASA |
Deep Space Network (DSN) DSS 14 in Goldstone, California DSS 43 in Tidbinbilla, Australia |
| NRAO |
National Radio Astronomy Observatory in Green Bank, West Virginia, Tucson, Arizona, and Soccorro, New Mexico |
| OSURO |
Ohio State University Radio Observatory in Columbus, Ohio |
| SARA |
Society for Amateur Radio Astronomers |
| U. MASS |
Five College Radio Astronomy Observatory in Amherst, Massachussetts |
| VLA |
Very Large Array in Socorro, New Mexico |
| WSRT |
Westerbork Synthesis Radio Telescope in Westerbork, The Netherlands |
