While doing some calibration on the smaller dish I ran across a really nice collection of voice/data signals from the TerreStar-1 satellite. TerreStar-1 is in geosynchronous orbit in the 111W slot. It has an 18-meter antenna and so has some pretty strong signal capability.
Modulation is Pi/4 QPSK GMR-1.
Here is a wide view of a control signal and many voice/data channels.
Here is a closer look at some of the voice/data signals.