Complex sentence: After launch April 28,2008 AAUSAT-II beacon was received at Cal Poly University in California but two-way communications could not be achieved as it turned out that AAUSAT-II was transmitting at a lower level than anticipated.
Split into simpler sentences: After launch April 28,2008 AAUSAT-II beacon was received at CalPoly University in California. It turned out that AAUSAT-II was transmitting at a lower level than anticipated.