There are two configurations of the DAQ represented in the new data. Only 2 out of a total of 40 waveforms show pulses from Tx1. The remaining 38 waveforms all appear to show only normal ambient noise. Analysis of pulses in the good waveforms to determine time delay between arrivals on Rx3 and Rx6 is in progress. Pulses again sent to Tx1 at a variety of rates.
Preliminary analysis indicates that all three receivers show two different, but common sources.
George believes that this is either satellite transmission or a source on the surface. More work is in progress. The fact that there is no lack of background radio sources means that, even in the absence of working underice transmitters, we still have plenty of background noise to verify that the receivers are working. This is an interesting point and perhaps makes it less critical that we drop so many transmitters underice this year. Dave and Adrienne worked through a round of testing antennas on Thursday, and also with Alice at EE on Monday.