The American Radio Relay League (ARRL) has posted a list of frequencies used by new experimental satellites. The birds were launched from Alaska in November, and transmit digital data beacons and relayed communications using the AX.25 protocol. The frequencies are in the 144 MHz and 440 MHz range amateur radio bands and can be received by a regular police/fire/EMS type FM radio scanner. In order to decode the AX.25 protocol data, you would need a special software package such as ham radio apps available for Ubuntu. The satellites are part of a student project from the University of Texas-Austin.