We repeatedly noticed that the current front-end calibration is slightly off - tonight all cal lines (low and high freq) in DARM were 11% above the PCAL read-back.

If I take the PCAL readback as reference and scale down the calibrated spectrum (as attached), I got about 80Mpc.

On the other hand, Evan Goetz reported that he thinks the PCAL is clipping (30827). We'll see whether these 11% are real...