Heard some activity on 143.625 FM on the pass of 9/6/06 20:15 utc. Sounded like Jeffrey Williams doing comm checks with NASA. Have an audio file I can share if anyone's interested. Is there a place on this site to upload it to?

The launch of Space Shuttle Atlantis was postponed today for at least 24 hours due to a problem that occurred Tuesday night during the activation of one of the shuttle's three electricity-producing fuel cells. A spike and drop in voltage was noticed on fuel cell number one. Troubleshooting is ongoing, and the problem has been isolated to a coolant pump that helps cool the fuel cell system.