Update2: Here's the 14-hour data together with a 14-hour noise-floor run. The ADEV and TDEV results are more or less instrument-limited. Only for phase-noise above 100Hz offset is the instrument floor significantly below the result for the distribution amplifier.
Update: Here's a 14 hour run of the residual phase noise, ADEV, and TDEV, as measured through the frequency distribution amplifier. Instrument is a Microsemi 3120A phase-meter.
Aivon has now produced around 16 of these distribution amplifiers.
There's a new op-amp which might be interesting to try for the FDA board: THS3491. It has a grounded pad under the op-amp, so we need a new EP-variant of the PCB.