SIT5156AI-FK-33VT-25.000000X (VCTCXO) and LNB SHARP bs1k2el200a

Works nice, upper part of waterfall vs lower part of waterfall is about 10 degrees C difference, and about 8 hours

@QO-100`s CW beacon

FOX924B-25.000 and LNB SHARP bs1k2el200a

Nope. This TCXO is digitaly controlled inside. It jumps:

@QO-100`s CW beacon

ASTX-H11-25.000MHZ-T and LNB SHARP bs1k2el200a

Nope. This TCXO has too much noise:

@QO-100's CW beacon

QO-100 and cheap PLL LNB SHARP bs1k2el200a

It works:

QO100 @ SHARP bs1k2el200a + 40cm offset dish + rtl-sdr

I was trying to make signal more stable, so I used AD9854 DDS + 10MHz OCXO. I replaced quartz with small transformer to make symmetrical signal. And this works ok.
Then i tried to feed it with 25788589.743 Hz to make QO's transponder available on 432MHz band. This works too, but SNR suffers about 10 dB loss :(

SHARP bs1k2el200a inside

DDS signal @25.5MHz