I am using the Leo Bodnar dual GPSDO on a Pluto SDR and prepared two different LNBs for external oscillators,
Octagon green quad and GoldenMedia from Pollin.
Output 1 from GPSDO is set to 25MHz, Output 2 to 40MHz by using the following PLL parameters :
My SDR shows stable peaks on 25 and 40Mhz.
When tuning to the cw beacon on QO100, it seems that the signal is oscillating.
I connected the GPSDO directly ( 50cm cable ) to the LNB and tried my RTL SDR - same result.
Both LNBs behave this way.
Does anyone have an idea about this ?