Heck yeah! 72 Miles! Computerworld has the scoop [vis Slashdot]:
The link to San Clemente Island — used to carry data from a seismograph, data logger and Global Positioning System receiver — runs with the maximum 1-watt power output allowed by the Federal Communications Commission for 2.4-GHz equipment, Werner-Braun said. At both ends of the link, HPWREN technicians installed high-gain, 2-ft. parabolic antennas to provide an additional boost to the signal.