Working for Golledge gives me access to some great specialist kit. One example is the phase noise test set.

I bought one of the first batch of redpitayas by joining in the crowd funding of the development. Since I have not seen phase noise data appear elsewhere hopefully people will find this plot of use.

The above was measured at 50MHz.

The frequency setting of the redpitaya was slightly off 50MHz in order to get it as close to 50MHz as possible, and within the tuning range of the OCXO being used as a reference oscillator for this measurement.