(Dick G, Daniel S)

We added a second frequency difference divider to the rack. For now we just used the output of the DIFF VCO as its input. The division ratio is 10. The attached plot shows the stability of its output as measured by the timing frequency counter. The standard deviation of the distribution is around 2.0 Hz. This is about an order of magnitude better than the single stage measured here. Of course the range has been reduced accordingly and is now roughly +/-100 kHz.