Has anyone ever managed to keep the internal 25MHz LNB crystal and inject the external GPSDO disabling the internal ref.?
My goal would be that the LNB runs on internal crystal if no external ref. is provided, otherwise it runs on external reference source.
This is because I found that WB RX suffer a lot of phase noise, even with the Leo Bodnar GPSDO I have a noticeable difference in received quality between modified and unmodified LNB. Of course this is not an issue for NB SSB.
Any suggestion is welcome! Thanks, Mauro IW3ROW