TCXOs are simply better...

A project log for GPSDO Master Clock

A master clock source for the radio astronomy SDR DAS.

Robert RouquetteRobert Rouquette 06/28/2020 at 15:230 Comments

After building an enclosure for the board and allowing it time to settle, the clock stability is remarkably improved over the previous revisions.  Here's the settled performance over 12 hours:

The enclosure slows the temperature ramps sufficiently enough that I've been able to relax the proportional coefficient in the PID controller which makes the VCTCXO adjustments far smoother.