Following on from measurements taken  last Wednesday  more
measurements of the power noise were taken this morning.  Measurements were after the neoVAN power amplifier, before and after the
pre-modecleaner.  The broad peaks at ~18.5 kHz and multiples is present on the output of the amplifier.  It is possible to that
this might be due to an incorrectly set crossover in the FSS but I didn't think to check this when I was in the enclosure.

    The photodiode used for monitoring the output of the amplifier has a broad peak at ~5 kHz, which should not be there.

    The power noise measurements were taken with the ISS on and off.  Clearly the ISS is suppressing the power noise but there are
a number of 60 Hz related peaks in the spectrum what need to be eliminated.