Nils in Germany has reported via the Hearsat newsgroup that the NASA Space Shuttle Launch Support Net is up on Milsat on 261.700 MHz getting ready to support the STS-127 (Endeavor) launch on Saturday. They are using the same frequency that was used during the last mission to service the Hubble telescope.
Herky 251/252 have been heard working Wolf Den (JPRC Ramstein, Germany). JPRC stands for Joint Personnel Recovery Center.
You can read more about this group and their operations in an article that appeared back on May 12 regarding their support of the Atlantis mission to work on Hubble.
See http://www.ang.af.mil/news/story.asp?id=123149326