We looked at the RF mon of REFL_A_45 during a 20 W lock time. The RFPD's 45 MHz output is saturating frequently (previous discussion of REFL9):

Using a fast scope with 50 Ohm input, we looked at the RF mon output of the demod board. The RF is usually low, but can swing up to 80 mV-pp from seismicity. That's 1.2 Vpp at the input to the demod board. The signal is completeley due to the 45 MHz; there are no other significant frequency components.

Since the REFL45 is not used by any loop at the moment, it may be the case that its OK to let it saturate, but we don't know what effect it has, if any, on the 9 MHz output of the same circuit. To be investigated.