29nov13: fraction of time gps l3 was seen in A2811,A2754 data during nov13 . ... 23sep08: baseband data taken during gps L3 test. 22-29aug08: gps svn26 flies close to the beam while a2010 observes with alfa. 06dec06: a2010 alfa data taken 19:30 to 22:30 (AST) during GPS L3 tests. 06nov01: 1381 gps L3 birdie stuck on all the time. idl routines for AO satellite prediction. ... 29mar09: usaf interface spec (2006) (.pdf) . 29mar09: The new gps l2c signal (.pdf) . ... gps launch schedule (wikipedia) . ...