Hello,
I have built a new precise OCXO clock reference for QO100 according to the open source development by DJ0ABR, for the portable station in my caravan.
It takes the clock from a 100MHz OCXO and divides it into 50 MHz for my Pluto and 25 MHz for the LNB reference.
I have connected a GPS, but in general this is not really required since the frequency is already very stable with the OCXO only, at least after a few days of operation, after the run-in phase of the OCXO.
Additionally I am experimenting with a mixer designed by IU8CRI to receive QO100 not only with Pluto but also with my Yeasu TRX.
The description of the clock reference is here:
https://projects.dj0abr.de/doku.php?id=en:sat:plutolnb
vy73