| Society of Amateur Radio Astronomers: Dedicated enthusiasts who teach, learn, trade technical information, and do observations of the radio sky. |
| 3peaks Radio Telescope: Radio telescope project with diagram and graphs. |
| Amateur Radio Astronomy: Construction of the antenna, system descriptions, objectives, typical results, and references. |
| Amateur SETI: Equipment information with images, software and manual, formulas, javascript calculator, readings, sample data plots, glossary, and links. |
| Amateur SETI - Project BAMBI: Design, construction, and initial observational results of a 4-GHz amateur radio telescope with circuit board layouts, software, and schematics. |
| Basics of Radio Astronomy: Workbook developed to support training for the Goldstone-Apple Valley Radio Telescope, but can be applied to all. |
| Big Ear Radio Observatory: No longer in operation, and includes a beginner's guide, facility and equipment information, press releases, and slide shows. |
| EME, SETI, Radio Astronomy, DSP, and Radio Amateurs: Dedicated to building bridges between amateur groups and the promotion and preservation of weaksignal communication. |
| JupiterRadio: Dedicated to observing and analyzing natural decametric radio emissions from Jupiter and the sun. |
| Multi-SETI@Home Monitor: Graphical add-on package to monitor activity that may be running on multiple computers over a network or multiple instances on the same computer. |
| National Radio Astronomy Observatory: Current events, public outreach, very large array, VLA expansion project, and very long baseline array. |
| Pisgah Astronomical Research Institute: Dedicated to providing research and educational access to radio and optical astronomy for a broad cross-section of users. |
| Radio-Sky Publishing: Provides software (some free), books, and hands-on projects within areas of Jupiter, the Sun, Pulsars, and other areas. |
| SCSU Radio Astronomy: Reports progress on their small-dish projects with resource links. |
| SETI Research & Community Development Institute: A non-profit organization dedicated to the search for extra-terrestrial intelligence. Located in Brisbane, Australia. |
| The European Radio Astronomy Club: Observations, workshop, groups, telescopes and images, and radar links. |
| UKARA Net: Amateur radio astronomy mainly for, but not limited to, the United Kingdom, providing information for beginners, project ideas, articles, and downloadable archive material. |
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