One of the first things we did was to put a log periodic antenna (SAS 512-2 calibrated from 190 MHz to 2 GHz) into one corner of the reverberation chamber to excite the chamber.   We listened with the 3 axis Electric field probe at a height of about 1 meter and about 0.5 meter from the center of the wall with the access plate.  In what is shown below we are looking at a vertically oriented diople (z axis).

The lowest theoretical resonance is about 103.2 MHz (the 110 resonance). We see a resonance at 102.6 MHz with a Q of better than 1,150.  The next set of resonance are also labeled and agree well with the predictions using the size data given in the specifications section.  Using the "60th mode" rule of thumb we would expect the reverberation chamber to start to have acceptable performance at about 370 MHz.  Below we have plotted a frequency slice around 1 GHz.  Notice the Q on a clean single peak (although there are near by peaks).   Like the small chamber a directional coupler has not arrived so we can only say that the Q's quoted above are minimums.

We will post more information as it becomes available.