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NASA Tracker  Track the I.S.S. - Excellent site.
SAREX - Space Amateur Radio Experiment
SAREX  A teachers guide
Shuttle (Home Page)
Track the International Space Station  Shows location of I.S.S.
U.S. Space Camp

See The Space Station
Sightings Listed by City  Find when a spacecraft will be flying over your city.

Some UHF Shuttle Frequencies -  If you have a scanner or receiver with the coverage, the
following UHF frequencies are used by the Space Shuttle. The mode is AM, as is standard in the
aircraft band.
296.8 MHz - Used during launch/landing, and extravehicular activity (EVA)
3-way duplex ops.
279.0 MHz - Used during EVA for 3-way full duplex comms between Suit 1,
Suit 2, and the orbiter.
259.7 MHz - Launch/landing, EVA 3-way duplex ops.
243.0 MHz - Standard UHF emergency frequency.